Answer:
-7 x 21
this adds up to 14 and multiplies -147
find -x , when x=-16/51
Answer:- 1.066667 i think
Step-by-step explanation:
3. Solve 1 < 3x – 2 < 13.
Answer:
1< x <5
Step-by-step explanation:
1<3x−2<13
1+2<3x−2+2<13+2 (Add 2 to all parts)
3<3x<15
33<3x3<153 (Divide all parts by 3)
1< x <5
Answer:
(1,5)
Step-by-step explanation:
Find the values of a and b.
9514 1404 393
Answer:
(c) a = 14; b = 6√2
Step-by-step explanation:
If you draw a vertical line at the right end of the top segment, it will cut off an isosceles right triangle to its right. That triangle is shown as having a leg length of 6, so the length of 'a' is ...
a = 8 +6 = 14
The hypotenuse of an isosceles right triangle is √2 times the leg length, so ...
b = 6√2
PLEASE HELP ITS MATH THANK YOUUUU
Answer:
99000 millimeters kdknwjdhdiqkwpshd
4 - (y - 3) = 3(y + 1) - 4(1 - y)
Answer:
The value of y is 1
Step-by-step explanation:
4 - (y - 3) = 3(y + 1) - 4(1 - y)
4 - y + 3 = 3y + 3 - 4 + 4y
7 - y = 7y - 1
7 + 1 = 7y + y
8y = 8
y = 1
Thus, The value of y is 1
-TheUnknownScientist 72
Dan removed 16 fish from his pond over a period of 2 days . He romoved the same number of fish each day .What was the change inn the number of fish in the pond each day?
Answer:
8
Step-by-step explanation:
8 ?
2x8 =16
Write the word namefor the decimal 31.903
translate the 3 triangles below 4 units right and 3 units down
Answer:
If we translated the triangle 4 units right and 3 units down, then our new points would be J' (3,0) K' (3,-2) L' (0,-2). Hope this helped ..
Step-by-step explanation:
Simplify the equation (3x³)⁴.....
....................
Answer:
(3x)¹²
Step-by-step explanation:
(3x³)⁴ is in form of (e³)⁴ which can be written as e³×⁴
= e¹²
so (3x³)⁴ can be written as (3x)¹²
Answer:
3x¹²
Step-by-step explanation:
According to the power rule of exponents, to simplify a power of a power, you multiply the exponents and keep the base the same. In this case, 3 and 4 are the exponents. 3 times 4 is 12. So the answer would be 3x to the power of 12.
(3x³)⁴
3x³*⁴
3x¹²
It currently takes users a mean of 25 minutes to install the most popular computer program made by RodeTech, a software design company. After changes have been made to the program, the company executives want to know if the new mean is now different from 25 minutes so that they can change their advertising accordingly. A simple random sample of 51 new customers are asked to time how long it takes for them to install the software. The sample mean is 26.2 minutes with a variance of 16 minutes. Perform a hypothesis test at the 0.01 level of significance to see if the mean installation time has changed. What kind of problem is this
Testing the hypothesis in this problem which is a two-tailed test, we can conclude that there is not sufficient evidence to conclude that the mean time of installation has changed, since the p-value of the test is 0.0364 > 0.01,
At the null hypothesis, we test if the mean is of 25 minutes, that is:
[tex]H_0: \mu = 25[/tex]
At the alternative hypothesis, we test if the mean has changed, that is, if it is different than 25 minutes.
[tex]H_1: \mu \neq 25[/tex]
We have the standard deviation for the sample, thus, the t-distribution is used. The value of the test statistic is:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
In which:
X is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.s is the standard deviation of the sample.n is the sample size.In this problem:
25 is tested at the null hypothesis, thus [tex]\mu = 25[/tex].Sample mean of 26.2 minutes, thus [tex]X = 26.2[/tex].Sample of 51, thus [tex]n = 51[/tex].Variance of 16, thus [tex]s = \sqrt{16} = 4[/tex].The value of the test statistic is:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{26.2 - 25}{\frac{4}{\sqrt{51}}}[/tex]
[tex]t = 2.14[/tex]
The p-value of the test is found using a two-tailed test(test if the mean is different of a value), with t = 2.14 and 50 degrees of freedom.Using a t-distribution calculator, this p-value is of 0.0364.Since the p-value of the test is 0.0364 > 0.01, there is not sufficient evidence to conclude that the mean time of installation has changed.
A similar problem is given at https://brainly.com/question/23777908
PLEASE ANSWER 20 POINTS
The following steps show how the equation for the average rate can be transformed so that it is written in terms of only the rates for each leg of the trip. Write an algebraic justification for each step. Think about the number operations and properties that you know.
Answer:
Step-by-step explanation:
Step 1:
Sum of fractions in the denominator making cross product:
d / r1 + d / r2
Resulting:
d * r2 + d * r1 / (r1 * r2)
Step 2:
Multiply numerator and denominator by the following expression:
(r1 * r2) / (d * r2 + d * r1)
Step 3:
Take common factor in the denominator of the expression in step 2.
Resulting:
(d * r2 + d * r1) = d * (r2 + r1)
PLEASE HELP ASAP please please
Answer:
whats the question ❓friend maybe I'll be able to help
Witch of the following expressions are equivalent to 6+(-4)-5 A -(-6+4)-5 B 6-4-(-5) C 6-(4+5) D 6+4-5 E -(-6)+(-4)-(-5)
Answer:
c is your answer
Step-by-step explanation:
have a nice day!
Tara needs to read for a total of 60 minutes over 3 nights. She will read the same amount of time each night.
Tara wants to know how many minutes she will read each night. She finds the answer with this number sentence.
60 = 3 = 20
Which problem should she use to check her answer?
A. 20 x 3
B. 20:3
C. 60 x 3
D. 60:6
E. 60 x 20
Answer:
A. 20 x 3
Step-by-step explanation:
the amounts of time studied should be the amount studied per day multiplied by the total amount studied in three days, ie 20 minutes per day multiplied by the number of day , which is three days,
this amounts to 60 minutes
10) A community college student interviews everyone in a particular statistics class to
determine the percentage of students that own a car.
A) convenience B) random
C) cluster
D) systematic
E) stratified
PLEASE HELP DUE IN 20
I HOPE IT WILL HELP YOU.
Thank you.
TEDDYLOVER ^ - ^
What is the GCF of (4+16) using the distributive property?
Answer:
20
Step-by-step explanation:
The GCF of 4 and 16 is 4.
[tex] \frac{4}{4} = 1 [/tex]
[tex] \frac{16}{4} = 4 [/tex]
We can rewrite this using the distribute property like so:
[tex] 4(1 + 4)[/tex]
Using the distribute property:
[tex] = 4 + 16[/tex]
[tex] = 20[/tex]
We can also add inside the parentheses and multiply we'll get the same answer.
[tex] = 4(5) \\= 20[/tex]
PLEASE HELP ITS MATH THANK YOUUUU
Answer:
sorry i don't know
Step-by-step explanation:
sorry
Mr. Adkins teaches a Current Events course and is known for making his final exam very thorough. He thinks that with the technology present today,
his students should be able to stay current with all possible news. The only way to ensure yourself a good grade is to dedicate many hours reading
newspapers, watching 24 hour news outlets, and scanning the internet, and even that may not give you the desired test score. Adkins' students
kept track of the hours that they studied the week previous to the test. Here is a breakdown of the hours that they studied and the score they
received on the test.
Answer:
Part 1:
Make a scatterplot that represents this data. You may use a program such as Excel, or make the scatterplot by hand and scan it.
Part 2:
Does this data have a positive correlation, negative correlation, or no correlation?
Part 3:
Without the use of technology, find the equation of the line of best fit for the data. Tell which points that you used and show the steps you used to get the equation. Refer to the first 4 steps on page 2 of the lesson titled "Linear Regression - Line of Best Fit" to use as a guide.
Part 4:
Use the equation found in part 3 to predict the scores for two people who studied for 15 hours and 9 hours. Refer to the last step on page 2 of the lesson titled "Linear Regression - Line of Best Fit" to use as a guide.
Compile the results from parts 1 through 4 and put them in a Word document. Submit the document to your teacher.
Step-by-step explanation: help
what is happening in this graph from point b to c?
Answer:
at o to a the speed increases from a to b the speed is constant the from b to c the speed is decreasing there is a stop from c to d the speed increases at d to e going constant again at e to f
Step-by-step explanation:
On Monday, 405 Students went on a trip to the zoo. All 9 uses were filled and 9 students had to travel in cars. How many students were in each bus?
Answer:
Step-by-step explanation:
n = 41
There are 41 students on each bus.
Can someone help……….
Thomas Clemens lives in a town that charges a 0.5% city income tax rate. How much city income tax did he owe last year if he had federal taxable income of $45,883?
Answer:
$2294.15
Step-by-step explanation:
45883 x .05 = 2294.15
Nikita bought a flat for rupees 4987653. Round off the price of the flat to the nearest thousands.
What is the slope of the line shown in the graph? Express your answer as an improper fraction or as an integer
Answer:
y= 3/2x + 1
Step-by-step explanation:
Rise over run to find slope: Rise: 3 Run:2
Y-intercept is at +1
Step-by-step explanation:
slope is the same as gradient,m
m= y2- y1
x2 - x1
(2,4) (0,1)
x2,y2 x1,y1
m= 4 - 1
2 - 0
m= 3
2
27 equals 2 less than a number
Answer:
23
Step-by-step explanation:
Factor fully 12b^4+18b^2 plz plz plz
9514 1404 393
Answer:
6(b)(b)(2b^2 +3)
Step-by-step explanation:
The greatest common factor is 6b^2. Factored fully, that is 6·b·b. The terms left after that is factored out are (2b^2 +3). These have no further common factors, or any factors in real numbers or integers.
The full factoring is ...
6·b·b·(2b² +3)
can someone help me plz ?
Answer:
no
Step-by-step explanation:
ok
In triangle ABC , angle B=90° . AB = 36 cm and AC = 60 cm . Find the length of BC
Answer:
BC=48cm
Step-by-step explanation:
Let A= reference angle,
AC=h=60cm
AB=b=36cm
BC=p=?
Using pythogorean theorem,
h^2=p^2+b^2
√(60^2-36^2)=p
√2304=p
p=48cm
Polynomials
Multiply (2x - 3)(7x – 4)
Answer:
(2x-3)(7x-4)
2x(7x-4)-3(7x-4)
14x²-8x+21+12
14x²-8x+33
Answer:
14 x square - 29x + 12
Step-by-step explanation:
(2x - 3)(7x – 4)
14x squared - 8x- 21x + 12
14 x square - 29x + 12
