3 years ago

PLEASE HELP ASAP GEOMETRY 20 PTS REAL ANSWERS ONLY

Mathematics

1 answer:

kodGreya [7K]3 years ago

7 0

Answer:

Step-by-step explanation:

Use the Law of Cosines to find the measure of angle A from the lengths of the sides.

A = arccos[(b²+c²-a²)/(2bc)] ≅ 29.9°

B = arccos[(a²+c²-b²)/(2ac)] ≅ 54.8°

C = 180 - A - B = 95.3°

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The governor's approval rating dropped by 40% to 18%. What was his approval rating before?

svet-max [94.6K]

Answer:

58%

Step-by-step explanation:

58 cuz 40+18=58

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3 years ago

Find the area of the region under the graph of f on [a, b].<br> f(x) = x2 − 8x + 17; [−1, 2]

Harman [31]

Answer:

The area is 42 area units.

Step-by-step explanation:

The area of a function f(x) on an interval [a,b] is given by:

$A = \int\limits^a_b {f(x)} \, dx$

Applying to this question:

$A = \int\limits^-1_2 {x^2 - 8x + 17} \, dx$

Then

$F(x) = \frac{x^{3}}{3} - 4x^{2} + 17x$

$A = F(2) - F(-1)$

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$F(-1) = frac{(-1)^{3}}{3} - 4*(-1)^{2} + 17*(-1) = -\frac{1}{3} - 21 = \frac{-1 - 21*3}{3} = -\frac{64}[3}$

$A = F(2) - F(-1) = \frac{62}[3} - (-\frac{64}[3}) = \frac{62+64}{3} = 42$

The area is 42 area units.

5 0

3 years ago

It takes Carrie 58 minutes to get home. If Carrie leaves for home at 1:32, what time will she arrive?

Allisa [31]

Answer:

2:30

Step-by-step explanation:

58+32=90

90-60=30

2:30 is the answer

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4 years ago

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Step-by-step explanation:

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3 years ago

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3 years ago