The statement is false .
let ; n=-5
m=-6
n - m= -5 -( -6 )
= -5 + 6
= 1
which is not a negative real number .
therefore it shows that negative real number are not closed under substrsction.
the process or skill of taking one number or amount away from another.
Example: 7-5=2
7 is a minuend
5 is a subtrahend
and 2 is a differenceSubtraction is an arithmetic operation that represents the operation of removing objects from a collection.
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The diameters of trees at a nursery are Normally
distributed with a mean of 2.5 inches and a standard
deviation of 0.5 inches.
It was previously calculated that the z-score for 3.22
inches is 1.44 and that the percentage of trees that have
a diameter less than 3.22 inches is 92.51%.
About what percent of trees have a diameter greater than
3.22 inches?
About
% of trees have a diameter greater
than 3.22 inches. Round the percent to 2 decimal
places, if necessary.
Answer: 7.49%
Step-by-step explanation: i got it right on edg
Answer:
7.49%
Step-by-step explanation:
Please helpppp!!!!!
A tree casts a shadow that is 28 feet long. A person who is 5 feet tall casts a shadow that is 8 feet long. Using similar triangles and proportions find the height x of the tree. Show all your work.
Answer:
Step-by-step explanation:
30 feet.
When milgram conducted his first series of experiments with a sample of 20- to 50-year-old men, he found that over 60 percent of them:____.
When Milgram conducted his first series of experiments with a sample of 20- to 50-year-old men, he found that over 60 percent of them: went all the way to 450 volts.
What is the Milgram experiment?Milgram's experiment examined if authority affected submission. Stanley Milgram, a Yale University psychologist, carried out several obedience tests in the 1960s that produced some providing more opportunities.
Milgram discovered that more than 60% of the men in his sample of 20 to 50-year-olds who participated in his initial series of trials reached 450 volts.
As a result, when Milgram conducted his first series of experiments with a sample of 20- to 50-year-old men, he found that over 60 percent of them: went all the way to 450 volts.
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Help me please, I don’t understand
The length of the side in Simple radical form with rational denominator=[tex]\frac{10\sqrt{3} }{3}[/tex]
Equilateral triangle:
An equilateral triangle is a triangle with all three sides of equal length, corresponding to what could also be known as a "regular" triangle. An equilateral triangle is therefore a special case of an isosceles triangle having not just two, but all three sides equal. An equilateral triangle also has three equal 60 degrees angles.
Given:
the perpendicular of the triangle = 5
Let the side of the equilateral triangle = a
Solution :
Now all the side of the triangle is is equal, so that a=x
The base of an equilateral triangle is divided into 2 equal parts, due to the perpendicular.
Now by Pythagoras equation :
[tex]p^{2} +b^{2} =h^{2}[/tex]
[tex]5^{2} +(\frac{x}{2} )^{2} =x^{2}[/tex]
[tex]25=x^{2} -\frac{x^{2} }{4}[/tex]
[tex]25 (4)=4x^{2} -x^{2} \\100=3x^{2}[/tex]
[tex]\frac{100}{3}=x^{2} \\\\\sqrt \frac{100}{3} } =x[/tex]
[tex]\frac{10}{\sqrt{3} } =x[/tex]
Simple radical form with rational denominator :
Radical form: An expression that uses a root, such as a square root, or cube root is known as a radical notation, Therefore, [tex]3^{\frac{3}{2} }[/tex] in radical form is = √27.
Convert [tex]\frac{10}{\sqrt{3} }[/tex] into radical form with rational denominator:
[tex]\frac{10}{\sqrt{3} } =\frac{10}{\sqrt{3} } .\frac{\sqrt{3} }{\sqrt{3} } \\[/tex]
[tex]\frac{10\sqrt{3} }{3}[/tex]
The length of the side in Simple radical form with rational denominator=[tex]\frac{10\sqrt{3} }{3}[/tex]
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Y-3x=13+3x
HELP plis :(
Answer:
Step-by-step explanation:
Y-3x=13+3x
POSSIBLE POINTS. 1
Construction workers are building a marble sidewalk around a park that is shaped like a right triangle. Each marble slab adds 2 feet to the length of the
sidewalk. The workers find that exactly 1071 and 1840 slabs are required to make the sidewalks along the short sides of the sidewalk that runs along the
long side of the park?
Answer:
Step-by-step explanation:
a^2 + b^2 = c^2
where
a and b are the legs
and
c is the hypotenuse
.
the problem gives the "legs" because the LONGEST leg is always the hypotenuse.
a^2 + b^2 = c^2
1071^2 + 1840^2 = c^2
1147041 + 3385600 = c^2
4532641 = c^2
Which of the following is equivalent to −4(2x + 3y) − 6(3q + 7p)?
−8x + 12y − 18q + 42p
−8x − 12y − 18q − 42p
−8x + 3y − 18q + 7p
−24(2x + 3y − 3q + 7p)
Answer:
−8x − 12y − 18q − 42p
Step-by-step explanation:
-4 x 3y = -12y and only number 2 is correct
The solution is Option B.
The value of the equation is A = -8x - 12y - 18q - 42p
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is given by
A = -4 ( 2x + 3y ) - 6 ( 3q + 7p )
Now , on simplifying the equation , we get
A = -4 ( 2x ) - 4 ( 3y ) - 6 ( 3q ) - 6 ( 7p )
The value of A = -8x - 12y - 18q - 42p
Therefore , the value of A is -8x - 12y - 18q - 42p
Hence , The value of the equation is A = -8x - 12y - 18q - 42p
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What does the y-coordinate have to be for a point to be on the x-axis?
Step-by-step explanation:
If we're talking about something like y coordinate being on the x axis, I'd have to say 0. Because it would be on the y axis no matter the coordinates of it isn't a 0. Ex : (0,0) and (0,9). (0,9) would have the point going upwards on the y axis.
want this q's answers according to the absolute value
Answer:
24; 0
Step-by-step explanation:
Absolute value means number of the value away from zero, either positive or negative. So the absolute value of -24 (for example) is 24 because it is 24 integers away from zero.
Evaluate each function.
41) k(t)=t-4; Find (10)
The value of k(10) is 6.
A function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has precisely one output and the output can be linked to its input.A relationship between a collection of inputs and outputs is known as a function. A function is, to put it simply, a connection between inputs in which each input is connected to precisely one output.Each function has a range, co-domain, and domain. The given function is k(t).k(t) = t-4Here, the value of k(t), depends upon the value of 't'. k(t) is the dependent variable whereas 't' is the independent variable. Substitute the value of 't' by 10.k (10) = 10-4k (10) = 6To learn more about functions, visit :
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how do you write 4.93 as a percentage
Answer:
493%
Step-by-step explanation:
To convert a decimal to percentage, muiltiply the decimal by 100.
Simplify the expression. 3 + 2 • 4 Question 1 options: 9 11 20 24
Answer:
11
Step-by-step explanation:
3 + 2 × 4 ( multiplication before addition )
= 3 + 8
= 11
Need help!!
√18 is between _____.
4.5 and 4.6
8.9 and 9.1
4.2 and 4.3
3.1 and 3.2
Which of the following is equivalent to √52?
4√13
13√2
2√13
13√4
thank you ! :)
Answer:
√18 is between 4.2 and 4.3
√52 is equivalent to 2√13
......
Mr jones pays $423.22 for his car payment and $98.30 for his car insurance every month how much is mr jones paying per month for his automotive bills
The total payment done by Mr. Jones every month as he pays $423.22 for car payment and $98.30 for car insurance every month is equal to $ 521.52.
As given,
Payment done for car every month = $423.22
Payment done for car insurance = $98.30
Total payment done by Mr. Jones every month = $ (423.22 + 98.30)
= $521.52
Therefore, the total payment done by Mr. Jones every month as he pays $423.22 for car payments and $98.30 for car insurance every month is equal to $ 521.52.
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Isabella needed to get her computer fixed. She took it to the repair store. The
technician at the store worked on the computer for 4.25 hours and charged her $144
for parts. The total was $547.75. Which equation or tape diagram could be used to
represent the context if a represents the cost of labor per hour?
The equation is 547.75 = 4.25a + 144 so the tape diagram in option D is the correct answer.
What is an equation?A mathematical equation that represents the relationship of two expressions on either side of the sign.
It has one or more variables and equal to symbol.
Example: 3x – 5 = 5
We have,
Time spent fixing the computer = 4.25 hours
Cost of parts = $144
Total cost = $547.75
Cost of labor per hour = a
Since the cost of labor per hour is 'a' cost of labor for 4.25 hours is:
= 4.25 x a
= 4.25a
We can write an equation as:
547.75 = 4.25a + 144
Thus the tape diagram in option D is the correct answer.
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(4y - 15) 7y + x = 180
Write a quadratic function given the roots (4, 0) and (-2, 0) and the point (3, -3)
The quadratic function given the roots (4, 0) and (-2, 0) and the point (3, -3) = 1/3(x-4)(x-2)
What is quadratic function?A quadratic function is one of the following: f(x) = ax2 + bx + c, where a, b, and c are positive integers and an is not equal to zero. A parabola is a curve that represents the graph of a quadratic function. Parabolas can expand up or down, and their "width" or "steepness" can vary, but they all share the same basic "U" shape.
According to the given data:The quadratic function given the roots (4, 0) and (-2, 0) and the point (3, -3)
We utilize equation when p and q are the roots.
y = a(x- p)(x-q)
We are given with roots 4 and -2
y = a(x- 4)(x-(-2))
y = a(x- 4)(x + 2)
Now we use the given point (3,-3) to find out 'a'
3 = a(3- 4)(3 + 1)
3= a(-1)(-2)
3= 1a
a = 1/3
Replace the value of 'a'
f(x) = 1/3(x-4)(x-2)
The quadratic function given the roots (4, 0) and (-2, 0) and the point (3, -3) = 1/3(x-4)(x-2)
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-(16 - 5x) simplified
Answer:
5x-16
Step-by-step explanation:
-(16 - 5x)
Use distributive property to open parenthesis.
-(16 - 5x)=
=(-1*16)+(-1*-5x)=
=(-16)+(5x)=
=5x-16
Finding x.
5x-16=0
5x=16
x=3.2
Hope this helps!
Please mark as brainliest if correct!
help
.....................
Answer:
1. x = 9
2. x = 4
3 x =
4. x = 10
5. x =
6. x = 11
7. x = -1
8.x =
9. x = -4
10. x =
11. x = 10
12.x = -10
6/5 Given that and k are roots of the quadratic equation = h(x-2), where h is a constant. Find the values (5x-6)(x+2) of h and k.
Kareem says that the ratio 4:1 is equivalent to the ratio 12:9 because 4+8=12 and 1+8=9 is kareem correct? explain how you know.
No, Kareem is not correct because the ratio of 4:1 can never be equal to the ratio of 12:9.
Here,
Kareem says that the ratio 4:1 is equivalent to the ratio 12:9.
Because 4+8=12 and 1+8=9.
We have to find that Kareem is correct or not.
What is a ratio?
Ratios are used to determine the relationship between two numbers it indicates how many times is one number to another number.
Now,
Kareem says that the ratio 4:1 is equivalent to the ratio 12:9.
Calculate the ratio as;
12 / 9 = ( 3 x 4 ) / ( 3 x 3 ) = 4/3
So,
12 / 9 = 4 / 3
Hence, Kareem is incorrect because the ratio of 4:1 can never be equal to the ratio of 12:9.
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guys please help me i need your help nonsense report with solution please
Answer:
2.1/5
3.7/5
4.7/20
Step-by-step explanation:
2.1/5
3.7/5
4.7/20
Greetings from Brasil...
A - fraction addition/subtraction with equal denominators = keep the denominator and add/subtract only the numerators
B - fraction addition/subtraction with different denominators = we have to use LCM
2)
(10/15) - (7/15) - case A
(10 - 7)/15 = 3/15
3)
(8/10) + (3/5) - we can simplify the first fraction
(8/10) + (3/5) = (4/5) + (3/5) = (4 + 3)/5 = 7/5
4)
(3/4) - (2/5) - case B
LCM 4 and 5 = 20
(3/4) - (2/5) = 7/20
does someone mind helping me with this? Thank you!
Answer:
[tex]{ \tt{ \angle4 + \angle3 = 180}} \\ { \boxed{ \tt{ \angle3 \equiv \angle7}}} \\ { \tt{\angle4 + 114 = 180}} \\ { \tt{\angle4 = 180 - 114}} \\ { \underline{ \tt{ \: \angle4 \: = 66 \: }}}[/tex]
4/24 = 1/? denominator=
help needed on this question! with show work
Answer: 5 cm
Step-by-step explanation:
We know that 3x + 2x makes up one side of the square. Recall that the formula for a square's perimeter is P = 4a. Thus:
(3x + 2x) * 4 = 100
5x * 4 = 100
20x = 100 (divide by 20)
x = 5 (cm)
One year on Venus is equivalent to 224.7 days on Earth. How many days on Earth, in decimal form, are equivalent
to 9 years on Venus?
Record your answer in the boxes below. Be sure to use the correct place value.
The number of days on Earth, in decimal form that, are equivalent.to 9 years on Venus will be 2022.3 days.
How to calculate the value?From the information, one year on Venus is equivalent to 224.7 days on Earth.
Therefore, the number of days on Earth, in decimal form that, are equivalent to 9 years on Venus will be:
= 224.7 × 9
= 2022.3 days.
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Answer:
2022.3
Step-by-step explanation:
Translate into an equation
16 less than twice a number is -
10
Answer:
2x-16=10
Step-by-step explanation:
16 less is -16
twice a number is 2x because the number is unknown
Answer: 2n-16= 10
Step-by-step explanation:
Let's break this sentence into parts.
"16 less than": always translates to something -16. Hack: Whenever you see "something less than" you put a subtraction sign and that number on the right side. just like "5 less than" becomes something -5.
'twice a number': 2 times a number's value, or 2 times the number. let's say the number is 4. "twice the number" means to double it's value. 4x2=8. In this case, you write 2n.
- 2n translates to "2 times a number". A number next to a letter means they're being multiplied.
"is 10": =10. Hack: "is" always becomes an equals sign.
Combine
16 less than , twice a number, is 10.
2n - 16= 10
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(100) points and branlyist PLS HELP
Ryan collects rainwater in a barrel for his garden. The barrel is filled with 18 gallons of water. Ryan used 9.7 gallons to water his garden in June and 3 and one eighth gallons in July. How much water is left in the barrel?
24.575 gallons
5.175 gallons
3.168 gallons
3.125 gallons
Answer: 5.175
Step-by-step explanation: 18 - 9.7 - 3 1/8 = 5.175
How do I find the slope
Answer:
y=4x-1
Step-by-step explanation:
to find the slope you use this equation
(y2-y1) / (x2-x1)
you also need y=mx+b to write in your final equation for the slope,
m is the slope and b is the y intercept (where the point meets the y axis, horizontal line that goes like this | )
first, you got lucky this equation gave you the b value( remember, b is the y intercept) , which you can find when x is 0.
to find the slope we choose any two coordinates (x,y) from the table
i choose (0,-1) and (5,19)
and we put this in this formula
(y2-y1) /
(x2-x1)
(19+1) it’s plus because subtracting a negative - - makes it positive
so
(19+1)/
(5-0)
= 20/5 which is 4. so m( the slope) m=4
now that we have b=-1 and m=4 we can write the final answer equation
which is
y=4x-1
help i need some answers please
Answer:
1. -3x^2 +2x -5
a= -3 b= 2 c= -5
4. 2x^2 -2x -6
a= 2 ...
Step-by-step explanation:
Standard form: Ax^2 +bx +c
Subtract numbers from one side of the equation to make it equal to zero.Or distribute until the equation is in standard form.