3 years ago

Please i need help!!! Beth enlarged the triangle below by a scale of 5.

1 answer:

Elena-2011 [213]3 years ago

3 0

Answer:

Your answer is: There is a mistake in Beth's answer the mistake was that she multiplied the area of the original triangle by the scale factor.

Step-by-step explanation:

Hope this helped : )

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X2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?

s344n2d4d5 [400]

Answer:

a + b =1

Step-by-step explanation:

Write the given quadratic as x^2 – 1x – 90 = 0. This factors into

(x - 10)(x + 9) = 0, and so the roots/solutions are {-9, 10}.

If we call -9 "a" and 10 "b," then the sum a + b is -9 + 10, or a + b =1.

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3 years ago

Subtract.<br>(4x^2 + 8x - 2) - (2x^2 - 4x + 3)<br>Enter your answer, in standard form.

vovikov84 [41]

Answer:

$\large\boxed{(4x^2 + 8x - 2) - (2x^2 - 4x + 3)=2x^2+12x-5}$

Step-by-step explanation:

$(4x^2 + 8x - 2) - (2x^2 - 4x + 3)\\\\=4x^2 + 8x - 2 -2x^2 -(- 4x)- 3\\\\=4x^2+8x-2-2x^2+4x-3\qquad\text{combine like terms}\\\\=(4x^2-2x^2)+(8x+4x)+(-2-3)\\\\=2x^2+12x-5$

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3 years ago

A wedding planner uses 72 ivy stems for 18 centerpieces. When she arrives at the venue, she realizes she will only need 16 cente

adell [148]

Answer:

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Step-by-step explanation:

Ratio of ivy stems to centerpieces:

72/18 = 4 ivy stems per centerpiece

Therefore,

16 x 4 = 64

7 0

3 years ago

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Dennis_Churaev [7]

Answer:

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Step-by-step explanation:

Area of triangle:

Base*height/2

5.8*2.4/2

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just olya [345]

I think you have to multiply across.

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4 years ago

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