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SVEN [57.7K]
3 years ago
7

Given the function f(x) = −5x2 − x + 20, find f(3).

Mathematics
1 answer:
Tems11 [23]3 years ago
6 0

Answer:

-28

Step-by-step explanation:

put 3 where is x

f(x) = −5(3)^2 − (3) + 20

exponents flrst

(−5*9) − (3) + 20

-45 -3 +20

-48 + 20

-28

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melisa1 [442]
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3 years ago
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3 years ago
a tree was 62 inches tall. Three years later, it was 101 inches tall. What was the percent increase, to the nearest hundredth, o
nignag [31]

Answer:

63% increase.

Step-by-step explanation:

You don't really need to do anything because it's probably a 63% increase as 101 is close to 100 already. If you'd like:

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3 years ago
10/13 = 8 - 2z/52 Thats the question. Im dyin for help. :)
svp [43]

Answer:

z = 188

Step-by-step explanation:

1. 10/13 = 8 - 2z/52 (simplify - 2z/52)

10/13 = 8 (- 1/26)*z

2. 10/13 = (- 1/26)*z + 8 (flip for ease in solving)

(- 1/26)*z + 8 = 10/13

3. (- 1/26)*z + 8 = 10/13 (inverse: subtract 8 from each side to isolate variable <em>z</em>)

(- 1/26)*z = 10/13 - (8*13)/(1*13)  (common denominator needed for add/subtract)

(- 1/26)*z = - 94/13 (simplify)

4. (- 1/26)*z = - 94/13 (inverse: multiply both sides by -26/1 to isolate variable <em>z</em>)

<h2>z = 188</h2>
3 0
4 years ago
Read 2 more answers
What is the solution to the equation below? Round your answer to the two decimal places 24 log2x=60
Leto [7]

Answer:

5.66

Step-by-step explanation:

24 log₂ x = 60

log₂ x = 5/2

x = 2^(5/2)

x ≈ 5.66

7 0
3 years ago
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