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ahrayia [7]
3 years ago
10

What quadratic has roots x=8 and x= -5

Mathematics
1 answer:
Alona [7]3 years ago
5 0

Answer:

So the correct option is X squared -3 X +40

Step-by-step explanation:

If a polynomial has roots x=8 and x=-5, then we know that the factorized form is:

(x-8)(x+5)

So, to find the polynomial we need to expand the polynomials:

(x-8)(x+5) = (x^2 +5x - 8x + 40) = x^2 -3x + 40

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Kayson is looking at two buildings, building A and building B, at an angle of elevation of 73°. Building A is 30 feet away, and
grigory [225]

Answer:

The correct option is:

Building B; it is around 16.35 feet taller than building A.

Step-by-step explanation:

Consult the diagram below where the first figure represent building A and second figure represents building B

For building A:

tan θ = Perpendicular / Base

tan 73° = Height of building A / 30

Height of building A = tan73 · 30

Height of building A = 98.13 ft

For building B:

tan θ = Perpendicular / Base

tan 73° = Height of building B / 35

Height of building A = tan73 · 35

Height of building A = 114.48 ft

Building B is taller

Difference in height = height of building B - height of building A

Difference in height = 114.48 - 98.13 = 116.35 feet

3 0
4 years ago
Find x in the equation: 2x + 9 = 5x - 12
Olegator [25]

Answer:

x = 7

Step-by-step explanation:

Add 12 to both sides:

2x + 9 = 5x - 12

2x + 21 = 5x

Subtract 2x from both sides:

21 = 3x

Divide each side by 3:

7 = x

So, x = 7

7 0
3 years ago
What is the square root of 36 over 49
Ghella [55]
\sqrt{\frac{36}{49}}= \frac{6}{7}
4 0
3 years ago
Find the reflection of the point (25, 25) across the y-axis.
kondaur [170]

Answer:

(-25, 25)

Step-by-step explanation:

let me know if you want an explanation!

8 0
2 years ago
WILL MARK BRANLIEST FOR THE CORRECT ANSWER!!!! HELP ASAP!
Orlov [11]

Answer:

24

Step-by-step explanation:

it is 24 because 12 and 8 both go into 24 and that is the lowest LCD possible for those numbers.

3 0
3 years ago
Read 2 more answers
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