please help test due tomorrow. I'll give the correct answer brainliest

solve for x. show your work.​

Answer:

1. 5

2. 5

3. -3

4.y= -1

5. 5

Step-by-step explanation:

1.)x- 2y= -25 ; y=3x

x-2(3x)=(-25)

x-6x=(-25) ; -5x=(-25) ; x=5

2.) 5x+3y =40; x=y

8y=40; y=5

3.) 4x-3y= -27; x=3y

4(3y)-3y= -27; 12y-3y=-27; 9y=-27; y=-3

4.)x-y=9; x=-8y; -8y-y=9; -9y=9; y=-1

5.) 2x+2y=30; y=2x ; 2x+2(2x)=30; 6x=30; x=5

Answer:

50(1.25p) and 50(0.25p + 1.00)

Step-by-step explanation:

They both equal the same answer.

50(1.25p) = 62.5

50(0.25p + 1.00) = 62.5

when in parentheses, you multiply

50 * 1.25 = 62.5

50 * 0.25 + 1.00 = 62.5

The expression for the given scenario is 50(0.25p+1.00). Therefore, option A and C are the correct answers.

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

Given that, Mr. Hamilton sponsors the creative writing club.

He went to a local printing shop that charges $0.25 per page in the book and $1.00 to bind the pages together.

The booklet Mr. Hamilton is making has p pages, and he plans to make 50 booklets.

So, the expression is 50(0.25p+1.00)

= 12.50p+50.0

Therefore, option A and C are the correct answers.

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Answer:

the awnser is 20

Step-by-step explanation:

10

6

÷  

1

12

=  

10

6

×  

12

1

=  

10 × 12

6 × 1

=  

120

6

=  

120 ÷ 6

6 ÷ 6

=  20

Step-by-step explanation:

10/6 / 1/12

= 20

10        12             120

     x            =  

6           1               6

120/6=20

hope it helps! :3

Answer:

None so im assuming its the final one?

Step-by-step explanation:

Answer:

c i think

Step-by-step explanation:

Charlie travelled greater amount of time.

An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

Given:

D(t) = 60 |t- 3|

for, t=0

D(0) = 60*3 = 180

For t=1,

D(1) = 120

For t= 2

D(2) = 60

According to the data of Charlie and Annabeth it can bee seen that charlie had been travelling greater amount of time.

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Answer:

Charlie!

Step-by-step explanation:

Answer:

angle 2 is 63 reason is interior angle

angle 3 is 117 corresponding angle

Answer:

measure 1 = 117 degrees

measure 2 = 180 - 117 = 63 degrees

i dont know he reason because i cant see the options

Step-by-step explanation:

its the ch eating off the principal test for me

Answer: x = 2,340 homes without children

There are 2,340 homes without children.

Step-by-step explanation:

'x' represent the number of homes without children

'y' represent the number of homes with children

x : y = 9 : 7

Since the total number of homes is 4160 means x + y = 4160.

From x + y = 4160 follows y = 4160 - x.

Plug y = 4160 - x into x : y = 9 : 7

x : (4160 - x) = 9 : 7

Answer:

Assuming the 19 stood for an exponent, q = 1.098...

Step-by-step explanation:

Plugging in [tex]q^{19} = q + 4[/tex] in the graphical calculator, we can see that the solution is approximately q=1.098. There are no ways of solving this equation algebraically.

Answer:

q = 15

Step-by-step explanation:

19 = q + 4

Subtract 4 from each side

19-4 = q + 4-4

15 = q

Answer:

11 h and 32 m is the answer

Answer:

you would divide

Step-by-step explanation:

325 ÷ 13= $25 a week

I hope this helped

Answer:

325 divided by 13 = 25

Step-by-step explanation:

Answer:

18/25

Step-by-step explanation:

Answer:

30 mg

Step-by-step explanation:

Flow rate of dopamine per hour:

Flow rate of dopamine per hour =  (95g)*(30ml/hr) / 95ml

Flow rate of dopamine per hour = 30mg

Answer:

1/8a

Step-by-step explanation:

Answer:

9(2-3) -5(8)= -49

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Answer:

54cm

Step-by-step explanation:

because a trangle is half of a square so you have to mutiple by 2 so 27 * 2 = 54 :)

[tex]correct is it Because Correct[/tex]A.

Answer:

The answer of your question : 85.92 divided by 4 is equal to (21.48)

Answer:

20 cents

Step-by-step explanation:

Answer:

Y=1/2x

Step-by-step explanation:

the y intercept is 0 so we dont show it, and slope is rise over run, it goes up one unit every two times to the right

i hope this help!

Answer:

114

Step-by-step explanation:

A= length x width

A= 6x9

A=114

Step-by-step explanation:

total is 180* subtract 180by 149 u get x   180-149=31*

Answer:

[tex] \sqrt{2} \sin \: x + c[/tex]

Step-by-step explanation:

[tex] \int \sqrt{1 + \cos(2x)} \: \: dx \\ \\ = \int \sqrt{1 + 2\cos ^{2}x - 1 } \: \: dx \\ \\ = \int \sqrt{ 2\cos ^{2}x } \: \: dx \\ \\ = \int \sqrt{ 2 }\cos x \: \: dx \\ \\ = \sqrt{ 2 }\int \cos x \: \: dx \\ \\ = \sqrt{2} \sin \: x + c[/tex]

Answer:

(x+4)^2-11

hope it's helpful ❤❤❤❤

❤

THANK YOU.

Answer:

t≈6

Plug values into A=P(1+r/n)^nt

Answer: (-4,0) and (4,0)

Step-by-step explanation:

Just look where the zeros are in the y (fx) column that corespont the the x.

B!!!!!!!!!!!!!!!!!!!!!!

hope this helps

Answer:

[tex]Ratio = 9 :80[/tex]

Step-by-step explanation:

Given

[tex]A_1 = 18ft^2[/tex] --- Area of smaller rectangle

[tex]A_2 = 160ft^2[/tex] --- Area of bigger rectangle

Required

Determine the area of the areas.

The ratio is calculated by the dividing the areas of rectangles.

[tex]Ratio = \frac{A_1}{A_2}[/tex]

Substitute values for A2 and A1

[tex]Ratio = \frac{18ft^2}{160ft^2}[/tex]

[tex]Ratio = \frac{18}{160}[/tex]

Simplify the fraction

[tex]Ratio = \frac{9}{80}[/tex]

Represent as ratio

[tex]Ratio = 9 :80[/tex]

Hence, the ratio of the rectangles is 1 to 9

Answer:

The cost of 1 kg is AED1.49

Step-by-step explanation:

Given

[tex]Cost = AED7.75[/tex]

[tex]Weight = 5.2kg[/tex]

Required

Determine the cost of 1 kg grape

To do this, we simply divide the cost of 5.2kg by 5.2kg.

i.e.

[tex]Unit\ Cost = \frac{AED7.75}{5.2kg}[/tex]

[tex]Unit\ Cost = AED1.49/kg[/tex] -- approximated

So, the cost of 1 kg is AED1.49

Answer:

-5

Step-by-step explanation:

f(x) is a function.

f(0) means when x=0 what is the y value

We can look at the graph and when x=0 y is at -5

so the answer is -5