Answer:
B is correct
Step-by-step explanation:
three fifths= 6/10= 0.6
since the quantity is to a power of (2×x)=2x
so B is correct
I need to estimate then find the product 416x9 =3,744 why is the estimate 3,600?
First of all we know about the Estimation.
What is the Estimation?
To estimate the result of multiplication (product), round the numbers to some close numbers that can easily multiply . One method of estimation is to round all factors to the biggest digit (place value) they have.
General rule for rounding:
1 ) If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up.
2 ) If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down.
So the last digit of number is 44 which is less then 50 so the number is down to its 10's.
thats the reason why when we estimate the product of 416x9 =3,744 is 3,600.
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The tape diagram shows that shanice spent 120 minutes researching for debate club last week?
Time that is 100% of 120 minutes is 120 minutes.
Time that is 10% of 120 minutes is 12 minutes.
Time that is 110% of 120 minutes is 132 minutes.
What are the times?Percentage is the fraction of an amount that is usually expressed as a number out of hundred. In order to convert a number as a percentage, multiply the fraction of the number by 100. The sign used to represent percentages is %. Percentages are a measure of frequency.
Time that is 100% of 120 minutes = (100 / 100) x 120 = 120 minutes
Time that is 10% of 120 minutes = (10 / 100) x 120 = 12 minutes
Time that is 110% of 120 minutes = (110 / 100) x 120 = 132 minutes
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Answer: 100% of 120 is 120 Minutes
10% of 120 is 12 Minutes
110% of 120 is 132 Minutes
Step-by-step explanation:
There you go!
Solve for x in the inequality 2|x + 1| < 8
After solving the inequality we get the value of x as x ∈ (₋5,3)
Given the inequality is 2 |x + 1| < 8
Divide both sides of the inequality by the coefficient of variable.
|x + 1| < 8/2
Reduce the fraction
|x + 1| < 4
Now convert the absolute inequality to standard inequality.
₋4 < x₊1 < 4
separate compound inequalities into system of inequalities.
x ₊ 1 > ₋4 (1)
x ₊ 1 < 4 (2)
for (1) x ₊ 1 > ₋4
rearrange variables to the left side of the equation.
x > ₋4 ₋1
calculate the sum.
x > ₋5
for (2) x ₊ 1 < 4 (2)
rearrange the terms.
x < 4 ₋ 1
x < 3
therefore ₋5 < x < 3
Hence we get the value ranging from (₋5 , 3)
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which box and whiskers plot matches the data, 23, 32, 20, 13, 27, 36, 29, 38 23, 15, 30, 18, please its a test
Answer:
Option C
Step-by-step explanation:
Given the data set, 23, 32, 20, 13, 27, 36, 29, 38, 23, 15, 30, 18, to find out which box-and-whisker plot matches the data, let's work out the 5-number summary needed for constructing a box plot.
The five-number summary includes the min, Q1, median, Q3 and max value.
Let's find them.
First, order the data set from the least to the largest
13, 15, 18, 20, 23, 23, 27, 29, 30, 32, 36, 38
Min = 13
Max = 38
Median = (23 + 27) ÷ 2 = 50 ÷ 2 = 25
Q1 = (18 + 20) ÷ 2 = 38 ÷ 2 = 19
Q3 = (30 + 32) ÷ 2 = 62 ÷ 2 = 31
The box-and-whiskers plot will have the description given in option C.
How many ounces of pure acid should be added to 300 ounces of 12% acid solution to produce a solution that is 25%?
Answer:
52 ounces
Step-by-step explanation:
You want the number of ounces of pure acid to be added to 300 ounces of 12% acid solution to produce a solution that is 25%.
SetupLet x represent the number of ounces of acid added. Then the amount of acid in the desired solution is ...
12%(300) +100%(x) = 25%(300 +x)
Solution stepsSubtracting (25%(x) +12%(300)) from both sides, we get ...
75%(x) = 13%(300)
Dividing by the coefficient of x, we find ...
x = (13)(300)/75 = 52
52 ounces of pure acid should be added to make a 25% acid solution.
__
Additional comment
In the original solution, there are 12%(300) = 36 ounces of acid. In the 352 ounces of final solution, there will be 36+52 = 88 ounces of acid, a proportion of 88/352 = 1/4 = 25%.
Please help?
I don’t understand this
Answer:
Please see the graph below
Step-by-step explanation:
The table is just selecting numbers for x and then solving for what y would be. Once we have the ordered pairs (x,y) We can graph the points and see the line.
refer to the following equation:y=2x-1. complete the table below to find co-ordinates
Answer:
Step-by-step explanation:
y=2x1-
So this is a very simple question.
First, analyze the problem
It says y=2x-1
The answer is +1 or 1 I believe
Someone pls correct me If I'm wrong.
About how much will the eggplants cost if they brought 3 and they are $1.99 per pound and 3 eggplants weight 3 3/4 pounds
Answer:
6.4675
Step-by-step explanation:
A rectangle has a length 3x + 1 of and a width of Write an expression for the 3-9
perimeter of the rectangle.
The expression for the perimeter is P = 12x - 16
How to write an expression for the perimeter?The given parameters are
Length = 3x + 1
Width = 3x - 9
The perimeter is calculated as
P = 2 * (Width + Length)
So, we have
P = 2 * (3x + 1 + 3x - 9)
Evaluate
P = 2* (6x - 8)
Expand
P = 12x - 16
Hence, the expression for the perimeter is P = 12x - 16
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Help! Quadratic Word Problems!
Answer:
Step-by-step explanation:
Q1. Elizabeth has a bunch of red, yellow and white roses.
She chooses a rose at random.
The probability that she chooses a yellow rose is 0.1
The probability that she chooses a white rose is 0.2
(a) What is the probability that Elizabeth chooses a rose that is either yellow or
white?
(b) What is the probability that Elizabeth chooses a red rose?
(c) There were ten roses in the bunch originally
How many roses were red?
Answer:
a) 0.02
b) 0.7
c) 7
Step-by-step explanation:
0.2 × 0.1
1 - (0.2 + 0.1)
10 - (2+1)
Which number line represents the solutions to lx + 4) = 2?
O
O
O
←
+++
-7 -6 -5 -4 -3 -2 -1 0
1 2
+
←
+++ ++
-7 -6 -5 -4 -3 -2 -1 0 1
┫
+
+
-7 -6 -5 -4 -3 -2 -1 0 1 2 3
++
+
-7 -6 -5 -4 -3 -2 -1 0 1
2
3
2
+3
+
3
4
4
5
▬▬▬▬▬▬▬▬
4 5
6 7
4
+ +
6
7
5 6 7
++
5 6 7
+
please help it's another urgent pt 2
Using the OR and AND operations, we have that:
a. The graph of the and operation is x > a, while the graph of the or operation is x > b.
b. The graph of the and operation is x > b, while the graph of the or operation is x > a.
c. The graphs of both operations are the same, given by x > a = x > b.
What is the result of the AND operation between two data-set?
The result of the AND operation between two data-set is the set that contains elements that belong to both sets.
What is the result of the OR operation between two data-set?
The result of the OR operation between two data-set is the set that contains elements that belong to at least one of the sets.
In item a, we have that a is to the right of b, hence:
b is plotted before a on the number line.The intersection is the values starting at a, as between b and a, there are x > b but not x > a, while for x > a, the values will belong to both sets.The or is the values starting at x > b, as they will already belong to one of the sets.Hence:
The graph of the and operation is x > a, while the graph of the or operation is x > b.
In item b, we have that a is to the left of b, hence:
a is plotted before b on the number line.The intersection is the values starting at b, as between a and b, there are x > a but not x > b, while for x > b, the values will belong to both sets.The or is the values starting at x > a, as they will already belong to one of the sets.Hence:
The graph of the and operation is x > b, while the graph of the or operation is x > a.
In item c, we have that a and b are the same point, hence, hence the graphs of both operations are the same, given by x > a = x > b.
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Find the slope of the line if it exists.
Answer:
The slope would be [tex]-\frac{4}{3}[/tex]
Step-by-step explanation:
In the pyramid of Khafre, AC = 108 m and angle A = 53°. Find the height of the pyramid (BC) to the nearest whole meter
The length of BC to the nearest while meters is 143m
SOH CAH TOAGiven the following parameters
AC = 108 m
<A = 53°
Using the SOH CAH TOA identity
tan 53 = opp/hyp
tan53 = BC/108
Determine the measure of BC
BC = 108tan53
BC = 143.32m
Hence the length of BC to the nearest while meters is 143m
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A rectangle is 59.63 m2. If the length of the rectangle is 6.7 meters, shat is the width in meters?
Answer:
8.9
Step-by-step explanation:
When given the area of the rectangle to be 59.63m2.....AND the length to be 6.7m
To calculate the area of a rectangle = L×B
Width = Area ÷ Length
= 59.63m2 ÷ 6.7m
Width = 8.9m
Answer:
width = 8.9 meters
Step-by-step explanation:
Area of a rectangle = length * width
In this case:
Width = Area of a rectangle / length
Width = 59.63m² / 6.7m
Width = 8.9 m
find the distance between the two points in simplest radical form. (1,-7) and (7,0)
Step-by-step explanation:
Answer:
The distance between the two given points is equal to √85.
Step-by-step explanation:
Let's recall what the distance formula is:
\displaystyle \huge\math\boxed{d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2} }\math
d= (x 1 −x2 ) 2 +(y 1 −y 2) 2
We are defined our two points as:
(x₁, y₁) → (1, -7)
(x₂, y₂) → (7, 0)
We can rewrite this into our different "variables":
x₁ = 1
y₁ = -7
x₂ = 7
y₂ = 0
Now given our distance formula and our variables, we can find the distance between the two points:
\begin{gathered}\displaystyle\huge\begin{aligned}d & = \sqrt{(1 - 7)^2 + (7 - 0)^2} \\& = \sqrt{(-6)^2 + (7)^2} \\& = \sqrt{36 + 49} \\& = \math\boxed{\sqrt{85}} \\\end{aligned}\end{gathered}
d= (1−7) 2+(7−0) 2= (−6) 2+(7) 2 = 36+49=\math 85
∴ since the radical is already in its simplest form, our distance between the two points is equal to √85.
Hope this helps!
In the expansion of (1 + ax)24 where a > 0, the coefficient of x² is 1104. Find the value of a.
The required value of a is 2 if the coefficient of x² is 1104 of the expansion (1 + ax)²⁴.
What is the Binomial Theorem?According to the binomial theorem, it is possible to expand any non-negative power of binomial (x + y) into a sum of the form,
(x+y)ⁿ = ⁿC₀xⁿy₀ + nC₁ xⁿ⁻¹y₁ + nC₂ xⁿ⁻² y2 + ... + nC x¹yⁿ⁻¹ + nCn x°yⁿ
where n ≥ 0 is an integer and each ⁿCₓ is a positive integer known as a binomial coefficient.
We have been given that the expansion as
(1 + ax)²⁴
As per the binomial theorem expansion of the term 3,
T₃ = ⁿC₂ a² x²
Since the coefficient of x² = 1104
⇒ n!/2!(n-2)a² x² = 1104
Here n = 24
⇒ 24!/2!(24-2)a² = 1104
⇒ 276a² = 1104
⇒ a² = 1104/276
⇒ a² = 4
⇒ a = 2
Therefore, the required value of a is 2 if the coefficient of x² is 1104 of the expansion (1 + ax)²⁴.
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please help for brainiest !!!!
Answer:
E) Line 5
Step-by-step explanation:
Line 5 contains the first incorrect mathematical process
Process
x−5(x+1)>3x+2
−4x−5>3x+2
−7x−5>2
−7x>7
x<−1
Write an equation in point-slope form if (-1, 2) is a point on the line and 1/4 is the slope.
The slope or gradient of a line is a number that describes both the direction and the steepness of line. The equation in point slope form if (-1,2) is a point on the line and 1/4 is the slope is y-2=[tex]\frac{1}{4}x+\frac{1}{4}[/tex].
What is a slope?A number that identifies the direction and steepness of a line is its slope or gradient. Letter m is frequently used to represent the slope.
The ratio of "vertical change" to "horizontal change" between (any) two unique points on a line is used to compute slope. Occasionally, the ratio is written as a quotient (also known as a "rise over run"), which produces the same number for every two unique points on the same line. A declining line has a negative "rise." The line might be useful, as determined by a road surveyor, or it might appear in a diagram that represents a road or a roof as a description or a design.
Given,
x1= -1
y1= 2
slope= 1/4
Substituting the values in the equation,
y-y1= m(x-x1)
y-2= [tex]\frac{1}{4}[/tex](x+1)
y-2= [tex]\frac{1}{4}x+\frac{1}{4}[/tex]
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As a nurse, part of your daily duties is to mix medications in the proper proportions for your patients. For one of your regular patients, you always mix Medication A with Medication B in the same proportion. Last week, your patient's doctor indicated that you should mix 130 milligrams of Medication A with 182 milligrams of Medication B. However this week, the doctor said to only use 140 milligrams of Medication B. How many milligrams of Medication A should be mixed this week?
Proportionately, the number of milligrams of Medication A that should be mixed this week with 140 milligrams of Medication B is 100 milligrams.
What are proportions?Proportions are the ratios of variables to others.
Proportions show the number or value relationships of two variables.
Decimals, percentages, and fractions can represent proportions.
Data and Calculations:The mixture of Medication A and B last week:
Medication A = 130 milligrams
Medication B = 182 milligrams
The proportion of Medication A to Medication B = 0.714287
The mixture of Medication A and B this week:
Medication B = 140 milligrams
Medication A = x
x = 140 x 0.714287
x = 100 milligrams
Thus, using equivalent proportions, 140 milligrams of Medication B should be mixed with 100 milligrams of Medication A.
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One person has 1700 more than another person .Between then,they have a total of 10500. How much does each person have?
Answer:
One person will have 6100 and the other will have 4400.
Step-by-step explanation:
10500/2 = 5250
1700/2 = 850
5250+850 = 6100
10500-6100 = 4400
Check Answer:
6100+4400 = 10500
6100-4400 = 1700
I do not remember how to solve this
Answer:
Your answer is correct
Step-by-step explanation:
Use the rules of exponents to simplify the expression.
(q⁶)²To raise a power to another power, multiply the exponents.
q⁶ˣ²Multiply 6 by 2.
q¹²The correct option is the third.
SkandarPriya solved the following quadratic equation by completing the square. Her work is shown.
(+ 6x-11 =0
Original equation
x?+6x=11
Step 1: Isolate the variables to one side
4x +6x+6=17
Step 2: Complete the square when b = 6
(x+3)=17
Step 3: Factor and square the trinomial
x+3=‡/17
Step 4: Take the square root of both sides of the equation
x=-3‡/17
Step 5: Inverse operations to isolate the variable
What mistake did Priya make?
A
In Step 2, Priya did not correctly complete the square.
B
In Step 5, Priya did not finish simplifying her answer.
C
In Step 3, Priya should have also squared the 17.
D
In Step 1, Priya should not have changed the sign of 11
While solving the quadratic equation, in the step 2, Priya did not correctly complete the square.
A quadratic equation is of the form of ax²+bx+c=0.
Here x is the variable. a , b and c are constants.A quadratic equation has two solutions.The graph of a quadratic equation is in the form of a parabola.A quadratic equation can be solved in various ways:Graphical solutionMiddle term factorizationcompleting the square method.The given quadratic equation is of the form:
x²-6x-11=0
Now solving it by completing the square we get:
or, x²-6x=11 (take all the variable to one side)
or, x²-6x+9=11+9 (complete the square when b=3)
or, (x-3)²=20 (factor and square the polynomial)
or, x = 3 ± √20 (use inverse operations so that the variable is isolated)
Hence Priya made a mistake while completing the square of the equation.
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Ninety-six golf balls were picked up at the
driving range and placed into two buckets.
One bucket has twenty-eight more balls
than the other bucket. How many golf
balls are in each bucket?
Answer: 34 in one bucket, 62 in the other
======================================================
Work Shown:
x = number of golf balls in bucket A
y = number of golf balls in bucket B
Let's say bucket B has more golf balls. More specifically it has 28 more golf balls, so,
y = x+28
The two quantities must add to 96 golf balls total.
x+y = 96
x+x+28 = 96
2x+28 = 96
2x = 96-28
2x = 68
x = 68/2
x = 34 is the number of golf balls in bucket A
y = x+28
y = 34+28
y = 62 is the number of golf balls in bucket B
-------------
Check:
x+y = 34+62 = 96
The answer is confirmed.
Marty needs to subtract a number by 0.01. What decimal place should he subtract from?
A.
tenths
B.
hundredths
C.
thousandths
D.
ones
Answer:
A. tenths
because there's only two digits after a comma
i need help asap please
Answer:Option C J'(-3, 4), N'(1, 4), M'(1, 1), P'(-2, -1)
Step-by-step explanation:
we know that
The rule of the translation is
(x,y) -----> (x-4,y+4)
That means ----> The translation is 4 units at left and 4 units up
Find out the coordinates of the pre-image
Observing the figure
J(1,0),N(5,0),M(5,-3),P(2,-5)
Find out the coordinates of the image
Applying the rule of the translation at the coordinates of pre-image
J(1,0) -----> J'(1-4,0+4)
J(1,0) -----> J'(-3,4)
N(5,0) ---> N'(5-4,0+4)
N(5,0) ---> N'(1,4)
M(5,-3)----> M'(5-4,-3+4)
M(5,-3)----> M'(1,1)
P(2,-5) ----> P'(2-4,-5+4)
P(2,-5) ----> P'(-2,-1)
therefore
The coordinates of the image (after the transformation) are
J'(-3, 4), N'(1, 4), M'(1, 1), P'(-2, -1)
Answer:
:Option C J'(-3, 4), N'(1, 4), M'(1, 1), P'(-2, -1)
Step-by-step explanation:
My pleasure to help people
Somebody know what’s the endpoint and midpoint?
Answer:
The point in the middle/center of the line joining two points (also known as endpoints) is called a midpoint. Given one endpoint and a midpoint, the other midpoint can be calculated using the midpoint formula.
Step-by-step explanation:
The point in the middle/center of the line joining two points (also known as endpoints) is called a midpoint. Given one endpoint and a midpoint, the other midpoint can be calculated using the midpoint formula.
On average, Carmen can drive 33 miles on every gallon of gasoline. If she fills up her tank for $2.29 per gallon, how much will it cost her to drive 429 miles?
Answer:
$29.77
Step-by-step explanation:
First, divide 429 by 33 to find how many gallons that she's paying for, then multiply that by $2.29 to find the answer.
The cost for Carmen to drive 429 miles is $29.77.
What is Proportion?Proportions are defined as the concept where two or more ratios are set to be equal to each other.
Given that,
Distance car travels per gallon = 33 miles per gallon
Cost of gasoline per gallon = $2.29 per gallon.
33 miles can be travelled with 1 gallon of gasoline.
1 mile can be travelled with 1/33 gallon of gasoline.
429 miles can be travelled with 429/33 = 13 gallon of gasoline.
Amount of gasoline needed for 429 miles = 13 gallon.
Cost of gasoline for 1 gallon = $2.29
Cost of gasoline for 13 gallon = 13 × $2.29 = $29.77
Hence it will cost $29.77 for her to drive 429 miles.
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Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2700 grams and a standard deviation of 900 grams while babies born after a gestation period of 40 weeks have a mean weight of 3000 grams and a standard deviation of 430 grams. If a 32-week gestation period baby weighs 2900 grams and a 41-week gestation period baby weighs 3200 grams, find the corresponding z-scores. Which baby weighs more relative to the gestation period?
Find the corresponding z-scores. Which baby weighs relatively more? Select the correct choice below and fill in the answer boxes to complete your choice.
(Round to two decimal places as needed.)
A. The baby born in week 41 weighs relatively more since its z-score, enter your response here, is larger than the z-score of enter your response here for the baby born in week 32.
B. The baby born in week 41 weighs relatively more since its z-score, enter your response here, is smaller than the z-score of enter your response here for the baby born in week 32.
C. The baby born in week 32 weighs relatively more since its z-score, enter your response here, is larger than the z-score of enter your response here for the baby born in week 41.
D. The baby born in week 32 weighs relatively more since its z-score, enter your response here, is smaller than the z-score of enter your response here for the baby born in week 41.
Answer:
The 32 week gestation's period baby weighs 0.31 standard deviations below the mean.
The 41 week gestation's period baby weighs 0.65 standard deviations below the mean.
The 41 week gestation's period baby weighs relatively less.
Step-by-step explanation:
Normal model problems can be solved by the zscore formula.
On a normaly distributed set with mean and standard deviation , the z-score of a value X is given by:
The zscore represents how many standard deviations the value of X is above or below the mean .
Find the corresponding z-scores.
Babies born after a gestation period of 32 to 35 weeks have a mean weight of 2700 grams and a standard deviation of 800 grams. A 32-week gestation period baby weighs 2450.
Here, we have .
So
A negative z-score indicates that the value is below the mean.
So, the 32 week gestation's period baby weighs 0.31 standard deviations below the mean.
Babies born after a gestations period of 40 weeks have a mean weight of 2900 grams and a standard deviation of 385 grams. A 41 week gestation period baby weights 2650 grams.
Here, we have
So, the 41 week gestation's period baby weighs 0.65 standard deviations below the mean.
Which baby weighs relatively less?
The 41 week gestation's period baby has a lesser z-score, so this means that he weighs relatively less.
