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ivanzaharov [21]
3 years ago
8

What should be the first step in adding these equations to eliminate y?

Mathematics
2 answers:
fgiga [73]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Since you want to eliminate <em>y</em>, the y value on the bottom equation has the be the opposite of the y value on the top one. So it's 4y on the top one, so the bottom one has to be -4y to eliminate y. The bottom one is -2y, so -2 times 2 =-4, so multiply the bottom one by 2 omg i miss linear combination

ElenaW [278]3 years ago
5 0

Answer:

D

Step-by-step explanation:

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Rewrite the following polynomial in standard form.<br><br><br> 9x +x^2- 1/10
valentinak56 [21]

Answer:

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3 years ago
What is 6.23% of 100
jenyasd209 [6]

Answer:

6.23

Step-by-step explanation:

Percent means 'per 100'. So, 6.23% means 6.23 per 100 or simply 6.23/100. If you divide 6.23 by 100, you'll get 0.06230000000000001 (a decimal number).

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Lady bird [3.3K]

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Step-by-step explanation:

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3 years ago
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In the parallelogram ABCD, M angle A =2x +50 and m angle C= 3x + 40. The measure of ZA is
ipn [44]

Answer:

∠A = 70°

Step-by-step explanation:

I'm... guessing this is what you mean? It would've been helpful if you'd provided pictures.

Since all parallelograms consist of two pairs of vertically opposite angles, ∠A and ∠C are equivalent.

Which means that 2x + 50 = 3x + 40.

In which you solve the equation.

2x + 50 = 3x + 40

-2x           -2x

50 = x + 40

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Now, to find ∠A, substitute x into the equation:

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Hence, ∠A = 70°

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