Solve the system of equations by using substitution.
y = 2x – 3
y = x+4

Answer:

74 is the answer

Step-by-step explanation:

64+42=106

180-106=74

hope this helped!

Answer: 74°

42+64=106

180-106=74

I hope this helps :

Cost of washer: $720

Cost of dryer: $240

I've taken this test before and got it right, so you're good :)

Answer:

Multiply the top equation by -3 and the bottom equation by 2.

Answer:

B is the answer i got 90%

Step-by-step explanation:

Answer: 4 seconds

Step-by-step explanation:

Given: The function [tex]h(t)=-36t^2+288t+9[/tex] can be used to model the height of the ball where t is the time in seconds after the ball kicked and h(t) is the height in feet.

Differentiate the given function with respect to t , we get

[tex]h'(t)=-36(2)t+288=-72t+288[/tex]

Put h'(t)=0

[tex]\Rightarrow\ -72t+288=0\Rightarrow\ t=\dfrac{288}{72}\\\\\Rightarrow\ t=4[/tex]

Also, [tex]h''(t)=-72<0[/tex]

By second derivative test, h(t) is maximum at t=4.

Hence, the time in Devon which the ball reaches it maximum height = 4 seconds

Answer: 2J - 5

Step-by-step explanation:

The number of cards that Jacob has = J

Melissa has 5 fewer cards than Jacob. Melissa card will be: = J - 5

The expression that shows the number of cards they have together will be gotten by adding their cards together. This will be:

= J + (J - 5)

= J + J - 5

= 2J - 5

Answer:

2. and 4.

Step-by-step explanation:

Answer:

A lot of 128 pages are printed after 3 minutes.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

the answer is 599

Step-by-step explanation:

Answer:

x = 11

Step-by-step explanation:

Remark

There are two legs. They are equal.

Equation

2x - 4 + 2x - 4 +x = 47                   Combine like terms

Solution

5x - 8 = 47

5x - 8+8 = 47 + 8

5x = 55                                           Divide by 5

x = 11

Answer:

c

Step-by-step explanation:

if its talking about what ones a factor or moltiple of 20 then c if not then i dont know

Answer:

60

Step-by-step explanation:

because 12 inches is one foot so there’s 6 feet per 6 feet of ribbon and there’s 10 of these ribbons so 6 times 10 is 60

The 12-inch pieces the dressmaker can cut from 10 of these rolls of ribbon will be 60 strips .

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

It is given that the dressmaker has 720 inches of ribbon.

dressmaker needs to cut 12-inch pieces of ribbon from rolls of ribbon that are 6 feet in length.

The amount of rolls she has =  10 rolls

so,

6(strips per roll) x 10(amount of rolls) = 60 strips

Learn more about the unitary method;

https://brainly.com/question/23423168

#SPJ2

Answer:

Step-by-step explanation:

2 is the largest shared factor.  Thus, the given 14a + 8 = 2(7a + 4).

Answer:

5/2

Step-by-step explanation:

10 multiplied by 5/2 gives us 25, so the scale factor is 5/2.

Answer:

(x,y)--> (-x,-y)

Answer: 0.09 mg

Step-by-step explanation:

To find out the milligrams in the blood after 10 hours you just need to replace the 'h' in the equation to 10.

= 5e⁻⁰°⁴ˣ¹⁰

= 5e⁻⁴

= 0.09157819444

= 0.09 mg

Answer:

4/2

Step-by-step explanation:

Answer:

158°F

Step-by-step explanation:

Answer:

x < -10/3 OR x > 20/3

Step-by-step explanation:

|5 - 3x| - 3 > 12

|5 - 3x| > 15

since it's absolute value, you have 2 scenarios to solve:

1) 5 - 3x > 15

-3x > 10

x < -10/3  (when dividing or multiplying by a negative, switch the symbol)

2) -(5 - 3x) > 15

-5 + 3x > 15

3x > 20

x > 20/3

Answer:

Step-by-step explanation:

Answer:

6.1

Step-by-step explanation:

because the 3 is below 5 so it sticks to 1

x=9/34 that's the answer

Answer:

i think it would be A

Step-by-step explanation:

Answer:

B 30

Step-by-step explanation:

The answer is B :)

Answer:

Abraham

Step-by-step explanation:

Abraham used the correct equation because if we represent the original size as 100% and decrease that by 20 it would be 80% or 0.8

Nasser's equation will solve for the change in price

Kathleen's equation solves for if the popcorn size was increased by 20%

Answer:

nasser

Step-by-step explanation:

0.20 = 20/100=20%

Answer:

[tex]\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}=2xy^2\sqrt{x}+2xy\sqrt{y}[/tex]

Hence, ption B is true.

Step-by-step explanation:

Given the expression

[tex]\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}[/tex]

solving the expression

[tex]\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}[/tex]

as

[tex]\sqrt{x^2y^3}=xy\sqrt{y}[/tex]

[tex]2\sqrt{x^3y^4}=2xy^2\sqrt{x}[/tex]

so the expression becomes

[tex]\:\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}=xy\sqrt{y}+2xy^2\sqrt{x}+xy\sqrt{y}[/tex]

Group like terms

                                        [tex]=2xy^2\sqrt{x}+xy\sqrt{y}+xy\sqrt{y}[/tex]

Add similar elements

                                        [tex]=2xy^2\sqrt{x}+2xy\sqrt{y}[/tex]

Therefore, we conclude that:

[tex]\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}=2xy^2\sqrt{x}+2xy\sqrt{y}[/tex]

Hence, option B is true.

Answer:

b

Step-by-step explanation:

Answer:

18 friends

Step-by-step explanation:

Answer:

The graph at the bottom

Step-by-step explanation:

All the numbers are gonna come out positive, because of the absolute value bars.

Answer:

i think its the last one i got that answer right

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

0,3 is  point saying that this is not proportional 4 6 continues the fashion of bases by the point of origin which doesnt exisist or 0,0 so that doesnt work

Step-by-step explanation:

pls answert my question too