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Ratling [72]
3 years ago
15

Factor the trinomial: 4x2 - 8x - 5

Mathematics
2 answers:
shtirl [24]3 years ago
6 0
Correct answer is A.

(2x + 1)(2x - 5)
\\2x(2x-5)+1(2x-5)
\\4x^2-10x+2x-5
\\4x^2-x-5
Juliette [100K]3 years ago
5 0

you can always check by expanding the answers to see what matches

well, you can verify yourself by expanding the answer to check what matches

4x2 - 8x - 5 = 4x2 + 2x -10x -5
= 2x(2x+1) - 5(2x+1)
= (2x+1)(2x-5)
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Bryan created a scale drawing of his rectangular bedroom. His drawing had dimensions of 6 inches by 8 inches. If the scale that
vlabodo [156]

Answer:

56 feet

Step-by-step explanation:

If 1 inch = 2 feet, we can first find the actual dimensions of his room by multiplying the number of inches by 2.

6(2)

= 12

8(2)

= 16

So, the actual dimensions of his room are 12 feet by 16 feet.

To find the perimeter, use the perimeter formula, P = 2l + 2w.

Plug in the length and width:

P = 2l + 2w

P = 2(12) + 2(16)

P = 24 + 32

P = 56

So, the perimeter of his actual room is 56 feet.

6 0
2 years ago
What is the equation in slope-intercept form of the line that passes through the point (5,0) and is parallel to the line represe
zlopas [31]

Answer:

y=1.2x-6

Step-by-step explanation:

place in the points

0=1.2(5)+b

distrubutive property

0=6+b

subtract 6 on both sides

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6 0
3 years ago
Help on this one please
kvv77 [185]

Answer:

d ≈ 1732 ft

Step-by-step explanation:

Angle of elevation = Angle of depression

Following this truth,

m∠PAQ (Angle of depression) = m∠APB (Angle of elevation) = 30°

By applying tangent rule in the given triangle ABP,

tan(30°) = \frac{AB}{PB}

\frac{1}{\sqrt{3}}=\frac{1000}{d}

d = 1000√3

d = 1732.05

d ≈ 1732 ft

6 0
3 years ago
Ryan bought 3 books and a magazine . He paid $30 and relieved $5 change if the magazine cost twice as much as each book, find th
Montano1993 [528]

The books are $5, and the magazines are $10. I’m not sure which way you want it explained but since magazines are twice the price of books, you can solve the equation 3b + 2b = 25. This gives you b=5 which you just multiply by 2 giving you the price of a magazine.

8 0
3 years ago
Read 2 more answers
Unit 7 homework 5 Gina Wilson
OlgaM077 [116]
Huh??? Where is the question?
4 0
3 years ago
Read 2 more answers
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