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2 years ago

What is wrong in the drawing? How can you correct this work?

Mathematics

1 answer:

Pachacha [2.7K]2 years ago

6 0

Answer:

Change the angle measures to 90°

Step-by-step explanation:

A rhombus (which is what you have as you marked the edges congruent) has the diagonals perpendicular. Therefore, you need to change the angle measures to 90°

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Distributive property: Integer coefficients

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Step-by-step explanation:

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2 years ago

What is the product of the polynomials below

Scrat [10]

Answer:

B. $15x^{4}$ + 2x³ - 8x² - 22x - 15

Step-by-step explanation:

1. (3x² - 2x - 3)(5x² + 4x +5)

$15x^{4}$ + 12x³ + 15x² - 10x³ - 8x² - 10x - 15x² - 12x - 15

2. Combine like terms

$15x^{4}$ + 2x³ - 8x² - 22x - 15

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2 years ago

The area of a rectangular wall of a barn is 144 square feet. Its length is 10 feet longer than the width. Find the length and wi

denpristay [2]

Answer:

8 feet

Step-by-step explanation:

Let l and w be length and width, respectively. Then:

lw=144 and

l=w+10

So:

w(w+10)=144

w²+10w-144=0

(w+18)(w-8)=0

w=8 as the width ................

3 0

2 years ago

The formula=A+2lh+2wh gives surface area a. Of a rectangler solid with length, width, and height, L,W, and H, respectively solve

iogann1982 [59]

Answer:

$l= \frac{A}{2h} -w$

Step-by-step explanation:

The question is not correct (particularly the expression for the area)

A=2lh+2wh

Now we are expected to solve for l, that is we are going to make l subject of the formula, we have

let us take the second term on the RHS to the LHS

$A-2wh= 2lh$

we can now divide both sides by 2h we have

$\frac{A-2wh}{2h} = l\\\\l=\frac{A}{2h} -\frac{2wh}{2h} \\\\l= \frac{A}{2h} -w$

hence the expression for the length is $l= \frac{A}{2h} -w$

6 0

2 years ago