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2 years ago

Helppppppppppppp i suck at math

Mathematics

1 answer:

Fiesta28 [93]2 years ago

8 0

Answer:

i suck at math to, but i know this one

Step-by-step explanation:

you go on -7 and go <-------- that way. the arrow < is pointing that way and this arrow > is pointing this way.

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What is the first step to solve the following system of equations using substitution?

Akimi4 [234]

Answer:

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

Thus, option A) is true.

The solution to the system of equations be:

$x = 4, y = 5$

Step-by-step explanation:

It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.

Given the system of equations

$x - y = -1$

$2x - y = 3$

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

$x-y=-1$

Add y to both sides

$x-y+y=-1+y$

$x=-1+y$

Thus, option A) is true.

<u>NOW LET US SOLVE THE REMAINING PORTION</u>

$\mathrm{Subsititute\:}x=-1+y$ to solve for y

$\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}$

$-2+y=3$

$y=5$

For x = -1 + y

substitute y = 5

$x=-1+5$

$x=4$

Thus, the solution to the system of equations be:

$x = 4, y = 5$

3 0

2 years ago

PLEASE HELP ASAP WILLL MARK BRANLIEST TO WHOEVER ANSWERS CORRECTLY FIRST 20 PTS

DedPeter [7]

Answer:

Step-by-step explanation:

3 0

2 years ago

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Solution of these two sums please I need it ASAP please please.<br>I'll mark as brainliest please

VARVARA [1.3K]

a)-260

b)92

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8 0

1 year ago

The volume of water in a tank is modeled by the function y = 1.15x3 – 0.1x2 + 2 where x is the number of minutes after the fauce

Thepotemich [5.8K]

Given:

The volume of water in a tank is modeled by the function

$y=1.15x^3-0.1x^2+2$

where, x is the number of minutes after the faucet filling the tank is turned on.

To find:

The y-intercept and what does it represent in this context?

Solution:

We have,

$y=1.15x^3-0.1x^2+2$

Substituting x=0, we get

$y=1.15(0)^3-0.1(0)^2+2$

$y=0-0+2$

$y=2$

Therefore, the y-intercept is 2 and it represents the volume of water in a tank before the faucet filling the tank is turned on.

7 0

2 years ago

Read 2 more answers

Compare the volume of each shape. Then complete the statement.

stellarik [79]

Answer:

1/3

Step-by-step explanation:

The volume of a pyramid is always 1/3 of a prism and the volume of a prism is 3 times the volume of the pyramid

8 0

2 years ago