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3 years ago

For the following system, use the second equation to make a substitution for x in the first equation.

1 answer:

3 0

The answer is B. In the second equation, when you solve for x, it will be equal to y - 3. Then substitute that with x and 3(y - 3) +2y = 7 is what you get.

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(Will give Brainliest)

jek_recluse [69]

I believe it’s 8^3 I’m sorry if it’s wrong!!!!

5 0

3 years ago

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I need help plz i dont get it and im trying to get my grade up

Ymorist [56]

Answer:

648

Step-by-step explanation:

(25 - 9 + 2)^2 / 3x6

= 108 x 6

= 608

follow BODMAS and you'll get it

If you would like to venture further, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

4 0

3 years ago

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Which instruments listed below are examples of the classification idiophone?

rjkz [21]

Idiophone means an instrument that will produce a sound when being struck.
so the answer is B.

4 0

3 years ago

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The base of this regular right pyramid is a square. What is its surface area?

zubka84 [21]

Answer:

○ A) 21 ft.²

Step-by-step explanation:

${a}^{2} + 2a \sqrt{ \frac{ {a}^{2}}{4} + {h}^{2} } = S. A. \\ \\ {3}^{2} + 2(3) \sqrt{ \frac{ {3}^{2} }{4} + {2}^{2}} = 24 \\ \\ 24 ≈ 21$

I am joyous to assist you anytime.

5 0

3 years ago

For the diagram at right, write and solve an equation to find x

Tomtit [17]

Answer:

x = 24

Step-by-step explanation:

The formula for determining the sum of interior angles is:

$(n-2) * 180$

$4 * 180 = 720$

Therefore to determine an equation for x, we must add up all the interior angle equations and set them equal to 720.

$(2x+3) +(3x+12) + (7x+14) + (9x+2) + (4x+8) + (3x+9) = 720\\28x + 48 = 720\\28x = 672\\x = 24$

The equation and answer above shows how to find x, which equals 24.

3 0

2 years ago