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3 years ago

HELP ME PLEASE!

Mathematics

1 answer:

just olya [345]3 years ago

8 0

Answer:

Angle CAB= 63°

Angle ABC= 90°(right-angle)

ACB=180°-(CAB+ABC)

=180°-(63°+90°)

=180°-153°

=27°

Step-by-step explanation:

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Let f(x) = x2 and g(x) = x - 3. Evaluate (gºf)(-2). A. -20 B. 20 C. 7 D. 1

7nadin3 [17]

Answer:

D. 1

Step-by-step explanation:

Step 1: Find g of f(x)

g(f(x)) = (x²) - 3

Step 2: Plug in -2 as x

g(f(x))(-2) = (-2)² - 3

g(f(x))(-2) = 4 - 3

g(f(x))(-2) = 1

7 0

3 years ago

Two ships leave the same port in different directions, forming a 120° angle between them. One ship travels 70 mi. and the other

kondaur [170]

Answer : Distance between the ships to the nearest miles = 106.03 ≈ 106 mi.

Explanation :

Since we have shown in the figure below :

a=70 mi.

b=52 mi.

c=x mi.

$\text{Since two ships leaves the same port in different directions forming a }120\textdegree\text{angle between them.}$

So, we use the cosine rule , which states that

$c^2=a^2+b^2-2ab.cosC\\\\x^2=70^2+52^2-2\times 70\times 52\times cos(120\textdegree)\\\\x^2=4900+2704-7280\times (-0.5)\\\\x^2=7604+3640\\\\x^2=11244\\\\x=\sqrt{11244}\\\\x=106.03$

So, c = x= 106.03 mi.

Hence, distance between the ships to the nearest miles = 106.03 ≈ 106 mi.

8 0

3 years ago

Which of the following functions results in a graph that shows exponential decay? f(x) = 4(0.8)x f(x) = 0.7(1.2)x f(x) = 12(3)x

Korvikt [17]

The function will show exponential decay if one of the following is true

the base is less than 1 and the exponent is positive
the base is greater than 1 and the exponent is negative

The function that meets the requirement for exponential decay is ...

$f(x)=4\cdot 0.8^{x}\quad\text{matches the first choice}$

5 0

3 years ago

Read 2 more answers

How many questions would I have to miss on a 25 question test to get 88% ?

N76 [4]

Let's start with the question, how many questions do you need to get 88%?

so were are looking for
?/25 = 88% and 88% is also 0.88 so we can multiply 25 by 0.88

we get 22

But this doesn't here. the question asks us how many mistakes do you need. you can just subtract 22 from 25

25-22= 3
you need 3 misses to get 88%

7 0

3 years ago

12. What's

Sholpan [36]

Answer:

C.)

Step-by-step explanation:

Denominator is the bottom part of a fraction

3 0

3 years ago