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2 years ago

Solve the system of equations using substitution. y=x+2,5x-4y=-3

Mathematics

1 answer:

NARA [144]2 years ago

8 0

Answer:

x=5 and y=7

Step-by-step explanation:

Just substitute in y=x+2 into the equation 5x-4y=-3 to get 5x-4(x+2)=-3 which simplifies to x=5. Substitute x into y=x+2 to find y=7

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Simplify square root of ten times square root of eight.

Romashka-Z-Leto [24]

<h2>Explanation:</h2><h2></h2>

Here we need to simplify the square root of ten times square root of eight, so let's write this step by step:

Step 1. The square root of ten

$\sqrt{10}$

Step 2. The square root of eight

$\sqrt{8}$

Step 3. The square root of ten times square root of eight

$\sqrt{10}\times \sqrt{8} \\ \\ \\ \text{From radical property:} \\ \\ \sqrt{a}\times \sqrt{b}=\sqrt{ab} \\ \\ \\ So: \\ \\ \sqrt{10}\times \sqrt{8}=\sqrt{80} \\ \\ \\ But: \\ \\ \sqrt{80}=\sqrt{16\time5}=\sqrt{16}\sqrt{5}=4\sqrt{5}$

Finally, the correct option is:

<em>Four square root of five</em>

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2 years ago

Read 2 more answers

What is 7.75 equivalent to

nevsk [136]

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3 years ago

Help I give points

Andreas93 [3]

It is A because if you do your seven step process it will be A

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3 years ago

Marcus has 731 books he puts about the same number of books on each of nine shelves in his bookcase about how many books are on

kondaur [170]

Answer:

81.2222 or 81 with 2 left over

Step-by-step explanation:

731/9 = 81.2222

81.2222 rounded down = 81

9*81 = 729

731-729 = 2 left over

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3 years ago

Round to the nearest thousand . Use the number line to model your thinking

ivolga24 [154]

Answer:

Step-by-step explanation:

the line grath is your answer

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3 years ago