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yuradex [85]
3 years ago
8

What addition doubles fact can help you find 4+3? Explain how you know.

Mathematics
1 answer:
Anarel [89]3 years ago
5 0
Sorry idk sorry............................................
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the ratio of pink marbles to white marbles in samara's bag is equal to 1:5. What percent of the bag contains pink marbles?
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The ratio of the pink to white marbles is 20%
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3 years ago
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
3 years ago
What value of x makes x/20 and 3/4 proportionate
hodyreva [135]
The Answer is x=15. Good luck!
8 0
3 years ago
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What is the factored form of the polynomial?
Ilya [14]
(x-9)(x-3), because -9 and -3 make a sum of -12 and a product of +27
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Write an expression having only two terms that is equivalent to 2x – 3. Explain how you wrote the expression and how you can che
Andreas93 [3]

Answer:

4x-6

Step-by-step explanation:

Two times 2 equals 4 and 2 times 3 equals 6

5 0
3 years ago
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