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Bezzdna [24]
3 years ago
12

(08.05)

Mathematics
2 answers:
Crank3 years ago
7 0
If you use the first answer, the equation becomes 2x + 2y = 16.  You could subtract this from equation Q to eliminate x.

The second answer makes equation P -2x - 2y = -16.  You could add this to equation Q to eliminate x.  You can use both of these methods to eliminate the x term, but if you can only choose one, you should choose the second option.
snow_tiger [21]3 years ago
6 0
Answer is <span>−2(x + y = 8)
cause

</span><span>−2(x + y = 8) (multiply -2 to 1st equation)
-2x - 2y = - 16
</span><span> 2x + 5y = 24
</span>--------------------add
 0 + 3y = 8 (eliminate x to solve for y)
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Which of the following is a rational number ?
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79 because it cannot take two of the same number multiplied in order to get that answer.

Step-by-step explanation:

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Six of 16 students in Mr. McConney's class are serving detentions, the rest are here for tutoring. What percent of students are
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62.5%

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The length, with, and height of a rectangular prism can be represented by the expressions (x+3),(x+7),and(x-1). Write an express
joja [24]

Answer: 6x² + 36x + 22

Step-by-step explanation:2 faces  (x + 3) by (x + 7), area of both these faces 2(x+3)*(x + 7)

2 faces  (x + 3) by (x - 1), area of both these faces 2(x+3)*(x - 1)

2 faces  (x -1 ) by (x + 7), area of both these faces 2(x-1)*(x + 7)

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=2x² + 20x +42 + 2x² + 4x - 6 + 2x² + 12x -14 =

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A student finished 72 of her homework problems in class. If the ratio of problems she finished to problems she still had left wa
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4 0
3 years ago
To find the measure of ∠A in ∆ABC, use the___(Pythagorean Theorem, Law of Sines, Law of Cosines). To find the length of side HI
nadya68 [22]

<u>Part 1) </u>To find the measure of ∠A in ∆ABC, use

we know that

In the triangle ABC

Applying the law of sines

\frac{a}{sin\ A}=\frac{b}{sin\ B}=\frac{c}{sin\ C}

in this problem we have

\frac{a}{sin\ A}=\frac{b}{sin\ theta}\\ \\a*sin\ theta=b*sin\ A\\ \\ sin\ A=\frac{a*sin\ theta}{b} \\ \\ A=arc\ sin (\frac{a*sin\ theta}{b})

therefore

<u>the answer  Part 1) is</u>

Law of Sines

<u>Part 2) </u>To find the length of side HI in ∆HIG, use

we know that

In the triangle HIG

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