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KatRina [158]
3 years ago
9

It'd be great if I could get some help.

Mathematics
1 answer:
lakkis [162]3 years ago
7 0

Answer:

A. ~14.3 B. ~9.93

Step-by-step explanation:

A.

By looking at the equation you can see that you need to find the tan of the angle so the equation will be "Tan 40= 12/x" which you can simplify to "X=12/Tan 40" which equals "about 14.3"

B.

This one is very similar

By looking at the equation you can see that you need to find the Cos of the angle so the equation will be "Cos 25= 9/x" which you can simplify to "X=9/Cos 25" which equals "about 9.93"

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(r3 +6r2 −21r−18)÷(r−3) solve using synthetic division
alexandr402 [8]

Answer:

y = x^2 + 9x + 6    No remainder.

Step-by-step explanation:

The divisor will be 3 The sign on the divisor switches.

3 || 1    +     6    -    21    -   18 ||

                 3         27     + 18

================================

      1          9         6          0


The answser is x^2 + 9x + 6

5 0
3 years ago
a circular railroad-crossing sigh has a radius of 15 inches. which measurement is closest to the area of the sigh in square inch
S_A_V [24]

Answer:

30

Step-by-step explanation:

4 0
2 years ago
The average age of 15 students is 16 years. If teacher’s age is included the average increases
weqwewe [10]

31

because 15 +16 :31

. = y1 =  \times

5 0
3 years ago
F(x) = 2/x, g(x) = |x| -1 <br><br> what is the domain of (fog) (x)?<br><br> WILL MARK BRAINLIEST
DIA [1.3K]

Answer:

x≠-1,1

Step-by-step explanation:

f(g(x)) is a composition where g(x) is is substituted for x in f(x).

Recall, f(x) is 2/x. So we write 2/|x|-1. This places x in the denominator and 0 cannot be in the denominator x. Any value of x that makes the denominator 0 will not be in the domain.

|x|-1=0

|x|=1

x=1,-1

5 0
3 years ago
What is the solution set of -9x
klio [65]

Answer:

B. x≥-3

Step-by-step explanation:

To solve this problem, first you have to isolate it one one side of the equation.  

First, multiply -1 from both sides.

(-9x)(-1)≥27(-1)

Solve.

27*-1=-27

9x≥-27

Next, divide by 9 from both sides.

9x/9≥-27/9

Then, solve.

-27/9=-3

Therefore, the correct answer is x≥-3.

5 0
3 years ago
Read 2 more answers
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