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2 years ago

13

Solve and justify -3y-15=2(17-5y)

1 answer:

Anon25 [30]2 years ago

7 0

The answer to this very unique and wonderful math equation or problem is simply the answer of the variable y = 7

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Substitution method for 7x-2y=1 & x-2y=1

RUDIKE [14]

We want to use the Substitution method to solve
7x - 2y = 1 (1)
x - 2y = 1 (2)

From equation (1), obtain
2y = 7x - 1 (3)

Substitute (3) into (2).
x - (7x - 1) = 1
-6x + 1 = 1
-6x = 0
x = 0

From (3), obtain
2y = 7*0 - 1 = -1
y = -1/2

Answer: (0, -1/2) or x=0, y= -1/2.

6 0

3 years ago

Find the limit, if it exists.<br> Picture provided below.

Alja [10]

The answer is 20 because you plug in x=2 into f(x)

$3 \times 2 {}^{3} + 2^{2} - 8 = 20$

7 0

3 years ago

Abby earns $48 for babysitting for 6 hours . At that rate , how many hours will it take her to make $72

never [62]

Answer:

nine hours

Step-by-step explanation:

48 divided by 6 is 8 and 8 times 9 is 72

8 0

3 years ago

Read 2 more answers

Paige launched a ball using a catapult she built. The height of the ball (in meters above the ground) ttt seconds after launch i

agasfer [191]

Answer:

1) Factor form : $h(t)=-5t(t-8)$

2) 8 second after launch.

Step-by-step explanation:

The height of the ball (in meters above the ground) t seconds after launch is modeled by

$h(t)=-5t^2+40t$

To find the time when ball hit the ground, we need to find the factor form of the given function.

$h(t)=-5t(t-8)$

When ball hi the ground, then height of the ball from the ground is 0.

$h(t)=0$

$-5t(t-8)=0$

Using zero product property, we get

$-5t=0\Rightarrow t=0$

$t-8=0\Rightarrow t=8$

Ball hit the ground at t=0 and t=8. It means ball hit the ground in starting and 8 second after launch.

5 0

3 years ago

What is 2 1/5 + 1 1/5

Reptile [31]

Answer:

3.4

Step-by-step explanation:

divide it all into a calculator

7 0

3 years ago