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Dennis_Churaev [7]
3 years ago
11

Which values of A and B make the following equations true?

Mathematics
1 answer:
Korolek [52]3 years ago
5 0
<span>(5x^7 y^2)(-4x^4 y^5) =-20x^a y^b
</span><span>
solve this:
(5x^7 y^2)(-4x^4 y^5)
= -20 x^(7 + 4) y^(2 + 5)
= -20 x^11 y^7

answer

</span>A) a=11, b=7
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30/4 =7.5 so the answer is 7
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How deep is the water 31.5 feet from the shore? 05<br> (10 Points)
pantera1 [17]

Answer:

This is impossible to answer, unless there is a picture that is not there.

Step-by-step explanation:

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2 years ago
Math test<br> hard<br> math<br> i will mark as brainlist
ella [17]

Answer:

Surface Area: 155.98 yd²

Volume = 145.02 yd³

Step-by-step explanation:

Ok this might take a while to explain lol. First, to find the surface area of a composite 3D figure, add the areas of each geometric figure making up the composite 3D figure.

So first, we do the area of the triangle:

Equation: height base/2 which is 3 • 5/2 = 7.5

Next, the area of the rectangular prism:

Equation: 2(width • length + height • length + height • width)

Which is, 2·(2.8 · 8 + 4.8 · 8 + 4.8 · 2.8) = 148.48

The next step is to add the areas of the 3D figures together, so

7.5 + 148.48 = 155.98 (Surface area = 155.98 yd²)

Next, we do the volume:

To find the volume of a composite 3D figure, draw any necessary planes to view the figure as basic three dimensional figures, then: add basic figure volumes belonging to the composite shape.

I don't think it's necessary to re-draw anything, so just look at the figures as 3-dimensional shapes and find the volume the normal way.

Equation: 0.5 • base • height • length = 0.5 • 3 • 5 • 5

0.5 • 3 • 5 • 5 = 37.5 (Volume = 37.5)

Then finally, we do the volume of the rectangular prism:

Equation: width • height • length =2.8 · 4.8 · 8

2.8 • 4.8 • 8 = 107.52 (Volume = 107.52)

Finally, add the two volumes together and you are all done :)

37.5 + 107.52 = 145.02 (Volume = 145.02 yd³)

4 0
2 years ago
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Is this answer correct with all the variables including
Molodets [167]
13a - 2 is the answer, because 16(a-2) become 16 - 32, not 16a - 14.
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4 0
3 years ago
I need the answer pls answer fast
son4ous [18]

Answer:

A = 846 in²

Step-by-step explanation:

The area (A) of a rhombus is calculated as

A = \frac{1}{2} × d₁ × d₂ ( d₁ and d₂ are the diagonals ) , then

A = \frac{1}{2} × 36 × 47 = 18 × 47 = 846 in²

7 0
3 years ago
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