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Ksju [112]
3 years ago
8

-3x-5y=-7 -4x+5y=14 solve by elimination

Mathematics
1 answer:
Ymorist [56]3 years ago
3 0

Answer:

es 3/54 eso da My brother

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The constant in the expression 8x 3 + 4x 2 – 9 is
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Answer : 9

Step-by-step explanation:

The answer is 9 because a constant is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number.

6 0
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The ratios in an equivalent ratio table are 3:12, 4:16, and 5:20. If the first number in the ratio is 10, what is the second num
krek1111 [17]

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10:40

Step-by-step explanation:

7 0
3 years ago
What is the quadratic regression equation that fits these data?
elena55 [62]

9514 1404 393

Answer:

  D.  y = -0.32x² -1.26x +15.81

Step-by-step explanation:

This is one of those multiple-choice questions where you only need a vague idea of what the answer is supposed to look like.

In this case the answer must be a quadratic equation with a negative leading coefficient. (The parabola opens downward.)

The only answer choice that is a 2nd degree polynomial with a negative leading coefficient is choice D.

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A: linear equation

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4 0
3 years ago
How to solve for x and y
Minchanka [31]

<u>Answer-</u>

<em>The values of </em><em>x and y are 20° and 30</em><em>, respectively.</em>

<u>Solution-</u>

As in the given triangle all the angles are same so it must a equilateral triangle.

In an equilateral triangle all the measurements of the angles and side length are same. The measurement of the angels are 60°.

As given in the question one side length is 46, so all the side length are same.

So,

\Rightarrow y+16=46\\\\\Rightarrow y=46-16\\\\\Rightarrow y=30

We know that an exterior angle of a triangle is equal to the sum of the opposite interior angles. 80° is the exterior angle opposite to x and one angle of triangle at the top vertex.

\Rightarrow 80^{\circ}=x+60^{\circ}

\Rightarrow x=80^{\circ}-60^{\circ}

\Rightarrow x=20^{\circ}

Therefore, the values of x and y are 20° and 30, respectively.

4 0
3 years ago
HELP! WILL GIVE BRAINLEST!
vredina [299]

Answer:

last option

Step-by-step explanation:

7pi/6,11pi/6

8 0
2 years ago
Read 2 more answers
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