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3 years ago

15

See attached 50 POINTS!

2 answers:

Nina [5.8K]3 years ago

6 0

Hello,

Question-

Answer- The correct answer is A

Work- 2 times 9 plus 3 is 21

4 times 9 is 36

5 times 9 - 8 is 37

When you add those up you get 94

And 94 is A

Important- If my answer did help please mark me as brainliest thank you and have the best day ever!

mihalych1998 [28]3 years ago

6 0

:D

ANSWER IS A. hope it helps :D

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Is this equations sum irrational and why

CaHeK987 [17]

Answer:

answer

Step-by-step explanation:

7 $\sqrt{3}$ +6

5 0

3 years ago

Help needed! Thank you!

Gelneren [198K]

Answer:

C but see below.

Step-by-step explanation:

If I'm reading this correctly, you mean 31/24. It really can't be much else. The sine and cosine are both incorrect because both involve the hypotenuse which must be calculated in order for them to be considered. In addition 31/24 is greater than one which is impossible for both the Sine and the Cosine.

That leaves K and D

Tan(D) = 24/31 which is not an option.

That leaves C.

tan(K) = 31/24 which is what you have to choose. If your choice is not written this way, then there is no answer.

3 0

3 years ago

Given the function f(x) = -2c+cx-x^2, and f^-1(5) = -1, find c

AnnZ [28]

Answer:

$c=-2$

Step-by-step explanation:

We are given the function:

$f(x) = -2c + cx - x^2$

And that:

$\displaystyle f^{-1} (5) = -1$

And we want to determine the value of <em>c</em>.

Recall that by definition of inverse functions:

$\displaystyle \text{If } f(a) = b, \text{ then } f^{-1}(b) = a$

So, since f⁻¹(5) = -1, then f(-1) = 5.

Substitute:

$f(-1) = 5 = -2c + c(-1) - (-1)^2$

Simplify:

$5 = -2c - c - (1)$

Combine like terms:

$6 = -3c$

And divide. Hence:

$c = -2$

In conclusion, the value of <em>c</em> is -2.

8 0

3 years ago

Which of the following inequalities have -8 in its solution set?

Mice21 [21]

Answer:

3x ≥ 24 or 3x ≤ -24

Step-by-step explanation:

This is the obvious choice because of this:

8 ≤ x or -8 ≥ x

There is your -8 right there. You just divide all sides by 3 to get this solution set.

I am joyous to assist you anytime.

3 0

3 years ago

9. During the past week, Mr. Hamilton gave one quiz and one exam to his high school algebra class.

Kamila [148]

<em>Missing Information:</em>

<em>It takes Mr. Hamilton 1/15 of an hour to grade one student’s exam and 1/30 of an hour to grade one student’s quiz.</em>

Answer:

$Total\ Time = \frac{x}{10}$

Step-by-step explanation:

Given

$Exam = \frac{1}{15}hr$

$Quiz = \frac{1}{30}hr$

Required

Determine the time spent on x students

First, we need to determine the total time spent on 1 student

$Time = Exam + Quiz$

$Time = \frac{1}{15} + \frac{1}{30}$

Take LCM

$Time = \frac{2 + 1}{30}$

$Time = \frac{3}{30}$

$Time = \frac{1}{10}$

Next is to determine the total time on x students:

$Total\ Time = \frac{1}{10} * x$

$Total\ Time = \frac{x}{10}$

6 0

3 years ago