Mathematics High School

Giving if you answer correctly

Answers

Answer 1

Explanation:

Substitute the value of the variable into the expression and simplify.

Answer:

Related Questions

Solve for u
24 =y6
u-

Answers

Answer:

Step-by-step explanation:

=> 24 = y(6)

=> y = 24/6 = 4

I don't understand this question, can someone help please?
Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and (–12, –9). He writes the equation
7x – 10y = 3. Is this a good model? Explain your reasoning.

Answers

Answer:

No. Correct is 7x - 10y = 6.

Step-by-step explanation:

The slope of the line is (-9-5)/(-12-8) = 7/10

y - 5 = 7/10(x - 8)

10y - 50 = 7(x - 8)

10y - 50 = 7x - 56

7x - 10y = -50 + 56

7x - 10y = 6.

Answer: No, it's not a good model

Explanation:

Let's plug in x = 8 and y = 5. This is directly from the ordered pair (8,5).

7x - 10y = 3

7*8 - 10*5 = 3

56 - 50 = 3

6 = 3

We get a false equation at the end, which means the original equation is false when (x,y) = (8,5). Therefore, the point (8,5) is not on the line 7x-10y = 3. Furthermore it means that 7x-10y = 3 is not a good model since Devon wanted the line to pass through both given points.

If you were to plug in (x,y) = (-12,-9), then you would find the same thing happens. For each ordered pair, the left side results in 6. So if Devon were to change that "3" to "6", then it would be a good model as both points would be on the line. In other words, the standard form equation Devon should use is 7x-10y = 6. When solving for y, Devon would get y = (-7/10)x - 3/5

Below is visual confirmation that 7x-10y = 3 is not a good model. Both points are not on the line. The graph was made using GeoGebra.

at a party 6 out of 8 people what pepperoni pizza what percent of people don’t want pepperoni pizza

Answers

Answer:

sorry I don't know the answer to this question

what’s the slope for this

Answers

Answer:

-2

Step-by-step explanation:

An inch is exactly 2.54 centimeters. Write an equation to convert the number of inches x to the corresponding length in centimeters.

Answers

Answer:

What's 2.54 cm in inches?

To convert cm to inches, divide your cm figure by 2.54 or multiply it by 0.3937. As an example, let's say you have a piece of wood measuring 50cm and you want to convert it into inches. To get your answer, divide your cm figure by 2.54. So, 50 ÷ 2.54 = 19.685 inches.

Step-by-step explanation:

Answer: 2.54x12 is 30.48

We can write:

2.54x

Where 'x' is the number of inches.

Plug in 12 for 'x':

2.54(12)

30.48

So 12 inches is approximately 30.48 centimeters.

A rectangle has an area of 140m2.
One of the sides is 10m in length.
Work out the perimeter of the rectangle.

Answers

Answer:

40 m

Step by step explanation:

140/10 = 14m
10 + 10 + 14 + 14 = 48m

Jitters sells a 12-oz. cup of coffee for $2.70, and she sells a 20-oz. cup for $4.50. Which cup size is a better deal per ounce?

Answers

Answer: both are the same

Step-by-step explanation: since 2.70÷ 12= 0.225 and 4.50÷ 20= 0.225

The figure below shows a circle inside of a square.
If the radius of the circle is 8 cm, find the area of
the shaded region

Answers

Answer:

Step-by-step explanation:

Shaded region is the circle.

r = 8 cm

Area of circle = πr² = 3.14 * 8 * 8 = 200.96 cm²

If the number of molecules in 1 mole of a substance
is 6.02 x 1023, then the number of molecules in 100
moles is

Answers

Answer:

6.02 x 10^25

Step-by-step explanation:

6.02 x 10^23 molecules/ mole

In 100 moles

100 = 10^2

(6.02 x 10^23 molecules/mole) * (10^2 moles)

when multiplying numbers with the same base

add the exponents

6.02 x 10^25 molecules

In the Diagram below DE≅AE ,BA∥CE
, CB∥DA
and m∠C=65∘

Find m∠BAE

Answers

Answer:

∠ DAE = 130°

Step-by-step explanation:

ABCD is a parallelogram ( opposite sides are parallel )

The opposite angles of a parallelogram are congruent , then

∠ BAD = ∠ BCD = 65°

∠ ADE = ∠ BAD = 65° ( alternate angles )

Since DE = AE then Δ ADE is isosceles with 2 base angles congruent, that is

∠ DAE = ∠ ADE = 65°

Then

∠ BAE = ∠ BAD + ∠ DAE = 65° + 65° = 130°

x=5 and y=7

9y+x= ?

i need help );

Answers

Answer:

Step-by-step explanation:

All we need to do is substitute the y and x. This would then look like:

9y + x =

9 × 7 + x =

9 × 7 + 5.

Can you solve it from here?

What is the surface area of this square pyramid? ft^2 on ft

2 ft^2
.
4 ft^2

2 ft² .

2 ft^2

2 ft²

Answers

4ft^2 I believe it is what goes 4ft<2^2

solve linear equation 1/4x+18=x

Answers

Answer:

Solve it

Explain:

Combine multiplied terms into a single fraction

\frac{1}{4}x+18=x

41x+18=x

Steps for 3m+ 6 - 2m + -22

Answers

Answer:

m-16

Step-by-step explanation:

3m+6-2m+-22=

3m-2m+6-22

m-16

Answer:

factoring

Step-by-step explanation:

break down the equation to get either two factors or three

Today everything at a store is on sale the store offers a 20
% discount the regualr price of a t shirt is 18 what is the discount price

Answers

Answer:

$14.40 is the discount price.

Step-by-step explanation:

0.2 x 18 = 3.6

18 - 3.6 = 14.4

Please help ASAP !!!

THANKS!!

Answers

Answer:

rotation

Step-by-step explanation:

Answer:

Reflection

Step-by-step explanation:

I think its reflection because if you reflect them across the y axis then the x axis I believe they will be in those positions.

Find the exact circumference.

Answers

Answer:

25π

Step-by-step explanation:

C= πd

d=√(24²+7²)=√(576+49)=√625=25

C=25π

Answer:

Step-by-step explanation:

First off, divide 24 by 2 as that would give you the radius of the circle

24cm / 2cm = 12cm

Next, use the formula to calculate the circumference of a circle and plug in radius:

C = 2 x π x r

= 2 x π x 12cm

= 75.40cm is the circumference

55.99 dollars gift with 18% coupon and 7.25% sales tax. What is the final cost?

Answers

Answer:

I think it is $91.89.

Step-by-step explanation:

1. Take the number and add sales tax by multiplying 0.0725 ( since that is what the percentage is in a decimal form). Then add that to the original and you have what it would be plus sales tax: $60.05.

2. Then you would need to multiply by 0.18. You would get 10.809

3. Next, subtract the 10.809 from $60.05 and the answer is $49.24.

I hope this helps! :)

What is the justification for each step in the solution of the equation?

5x−42=2x−1

Answers

Answer:

39.6

Step-by-step explanation:

collecting like terms we have:

5x-2x=-1+42

equating the terms..we have:

3x=41

divide both sides by the Co-efficient of x:

3x\3=42\3

x=39.6

Answer:

What is the justification for each step in the solution of the equation? 5x−4/2=2x−1 Select from the drop-down menus to correctly justify each step. 5x−42=2x−1 Given 5x−4=2(2x−1) Choose. 5x−4=4x−2 Choose. 5x=4x+2 Addition or Subtraction Property of Equality x=2 Choose. Options Addition or subtraction property of equality Multiplication or division property of equality Distributive property of.

__________________________________________________________

5x−4/2=2x−1

Select from the drop-down menus to correctly justify each step.

5x−42=2x−1 Given

5x−4=2(2x−1) Choose.

5x−4=4x−2 Choose.

5x=4x+2 Addition or Subtraction Property of Equality

x=2 Choose.

Options

Addition or subtraction property of equality

Multiplication or division property of equality

Distributive property of equality

Combine like terms

The “/” Is for a fraction

If I have two points (0,2) and (4,5) how do I find the y-intercept and the slope?

Answers

Answer:

the train leave was in JIt room but I am not sure how to make and the other way

Step-by-step explanation:

ok aw and a few of them have been missing out in all of the following is the comparatives on a new

baking recipe requires an oven of 380 °F. What is the temperature in degree Celsius? With solutions please

Answers

(380F - 32) • 5/9 = 193.333 C

can someone answer at least some of these?

Answers

See photo attachment for my work for question 30. Please mark me brainliest

how do you translate nine equals the quotient of a number and 54

Answers

Answer:

9 = [tex]\frac{n}{54}[/tex] or n ÷ 54

Step-by-step explanation:

nine equals the quotient of a number and 54

9 = the quotient of a number and 54

9 = will be division of a number and 54

9 = [tex]\frac{n}{54}[/tex] or n ÷ 54

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

HELP!The composite scores of individual students on the ACT college entrance examination in 2019 followed a Normal distribution with mean 20.8 and standard deviation 5.8
Use this to answer the 3 questions below

Answers

Answer:

Step-by-step explanation:

Round these as you see fit (these are exact values, if you're supposed to use a normal table leave a comment)

1.) 0.418045324790463

2.)0.0717364877620478

3.) 0.0192746613260287

One batch of pink paint uses `2` cups of red paint and `7` cups of white paint. Mai made a large amount of the same color pink paint using `14` cups of red paint. .

Answers

It’s a magnification so it’s 2 pots of red paint and 7 pots of white paint we ask you to do the same with 14 pots of red paint you notice that it’s 7 times bigger than 2 so you have to put 7 times more white paint and the answer is 21

evaluate the expression using the order of operations. show each step of work

Answers

Answer:

-73

Step-by-step explanation:

Here's the solving step

The cost of admission to a festival was $112 for 9 children and 3 adults. The admission was $108 for 8 children and 3 adults in another festival. How much was the admission for each child and adult?

Answers

Answer:

cost of admission for each child was $4.00, and each adult was $25.33

Step-by-step explanation:

When solving questions like these , I like to break down the problem so I understand it better.

Let x ---> cost of the admission for each child

Y ---------> cost of the admission for each adult

9x+3y = 112 ---> equation A

8x + 3y = 108 ---> equation B

Subtract B from A

9x+3y=112

-8x+3y = 108

x = 112-108

x = 4

Find value of y by substituting value of x into equation

9(4)+3y=112

Solve for y

36+3y = 112

3y = 112=36

3y = 76

y = 25.33

Pls help.......
[tex]100 - j = j - 40[/tex]

Answers

100 - j = j - 40

100 + 40 = j + j

140 = 2j

140/2 = j

70 = j

_____

RainbowSalt2222 ☔

J=70
100-70=30
70-40=30

what must be added to a^2+3/5a

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This question doesn’t really make sense- is it multiple choice, if so what are the options? A can be anything as long as it’s the same?

Am I right or wrong? If I'm wrong which is right?

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Answer: The correct answer is (3x+1)(x-4)

Step-by-step explanation:

(3x+1)(x-4)

3x(x-4) + 1(x-4)

3x^2 - 12x + x-4

3x^2 - (12x + x)-4

3x^2 - 11 x - 4

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