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Nastasia [14]
3 years ago
6

Evaluate 9x - 11 for x = -3 and x = 7.

Mathematics
1 answer:
o-na [289]3 years ago
4 0

Answer:

-38,

Step-by-step explanation:

1. 9x-11=-27-11=-38

2. 9x-11=63-11=52

The answers are in order.

1. x=-3

2. x=7

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ch4aika [34]

Answer:

10 + m  ≥ 30

You must spend AT MOST $20 or more

Step-by-step explanation:

Basically you have already spent 10 dollars and you have to pay MORE than or equal to 30. You cannot pay less than because you want the free songs. So the sign has to be  ≥ or the inequality will not be true.

10 + m  ≥ 30

10 - 10 + m  ≥ 30 - 10     ( subtract 10 from each side to isolate m)

m  ≥ 20     ( we are left with this )

The answer is :

m  ≥ 20

You must spend at most 20 dollars more to get the 3 free cd's. Your welcome :D

5 0
3 years ago
A martial artist is practicing breaking 5 boards. He is able to break a board with probability 0.8. (a) What is the probability
konstantin123 [22]

Answer:

(a) = 0.32 or 8/25

(b) = 0.48 or 12/25

(c) = 4 Boards

Step-by-step explanation:

(a):

0.8 x 2/5

8/10 x 4/10

(8 x 4) / (10 x 10)

(32) / (100)

0.32 or 8/25

(b):

0.8 x 3/5

8/10 x 6/10

(8 x 6) / (10 x 10)

(48) / (100)

0.48 or 12/25

(c):

0.8 x 5

8/10 x 50/10

(8 x 50) / (10 x 10)

(400) / (100)

4 Boards

4 0
3 years ago
In a multiple choice quiz there are 5 questions and 4 choices for each question (a, b, c, d). Robin has not studied for the quiz
Mekhanik [1.2K]

Answer:

We have 20 category Questions split into 5

Where we would assume that the 3rd question is simply 1/4 + 5/20 chance.

This is not a determiner as Robin is asked more questions.

So it is simply 1/4 and kept to factors that Robin will answer one of the 4 choices upon the 3rd question as 1/4 regardless of other questions being asked. Where Robins first answer would be the third question we subtract 4/5 = 16/20 - 5/20= 11/40. Which can only be rounded down to 2 decimal places 0.275

Step-by-step explanation:

7 0
3 years ago
What is the surface area?<br> 1 cm<br> 1 cm<br> 1 cm<br> square centimeters<br> Submit
julia-pushkina [17]

Answer:

1 x 1 = 1.

6 x 1 = 6cm^2

multiply by 6 cause 6 faces

3 0
2 years ago
What is the value of 8(x-3.7)
vekshin1
<span>8(x-3.7)

To find this, you must first use the distributive property.
8 • x = 8x
8 • -3.7 = -29.6

</span>8(x-3.7) = 8x - 29.6

Since there is no way to completely solve this since it's only an expression and not an equation, this is in simplest form.
7 0
3 years ago
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