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Mama L [17]
3 years ago
6

Evaluate the expression when a=7 and x=-2.

Mathematics
1 answer:
Kisachek [45]3 years ago
6 0

x-3a

Plug in the values a=7 and x=-2

=-2-3(7)

=-2-21=-23

The answer is -23.

Let me know if you need any clarifications, thanks!

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Use the diagram to find the height of statue.round to the nearest tenth
jeyben [28]

Answer:

7.3 ft

Step-by-step explanation:

The information given represents a right angle triangle with the following:

reference angle = 52°

Adjacent side length = 5.7 ft.

Opposite side length = height of the statue = h

Applying the trigonometric ratio formula, we would have:

tan(52) = \frac{h}{5.7}

Multiply both sides by 5.7

tan(52) \times 5.7 = \frac{h}{5.7} \times 5.7

tan(52) \times 5.7 = h

h = 7.3 ft (nearest tenth)

6 0
3 years ago
Which of the following is a polynomial with roots: − square root of 5 , square root of 5 , and −3?
tresset_1 [31]
Roots: - √5 , √5, and - 3

=> these are factors of the polynomial: (x + √5), (x - √5), and (x + 3).

Multiply those three factors:

(x + √5) (x - √5) ( x + 3) = [x^2 - 5] ( x + 3 ) = x^2 + 3x^2 - 5x - 15

Therefore the polynomial x^2 + 3x^2 - 5x - 15 is a polynomial with the given roots.

Answer: option B. x^3 + 3x^2 - 5x - 15
4 0
4 years ago
Three less than two times a number is 55. What is the number ?
Aloiza [94]
29
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5 0
3 years ago
Read 2 more answers
I need help on this problem can someone help<br><br> -8 (y - 86) = -48
exis [7]

Answer:

y=92

Step-by-step explanation:

Divided both sides by the numeric factor on the left side, then solve.

y = 92

6 0
3 years ago
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PolarNik [594]

Answer:

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so

\cos(x)  = 0.88

.....Hope this helps:)

3 0
2 years ago
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