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Verdich [7]
3 years ago
9

 Question Help

Mathematics
1 answer:
irinina [24]3 years ago
3 0
Can you show the histogram?
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How many tables will Mrs. Comfort need to rent if there were 32 guests?
RSB [31]

Answer:

Depends on how many people each table holds

Step-by-step explanation:

5 0
2 years ago
Brainliest if correct. pls help. improper answer will lead to automatic report. will not report if wrong. 25+pts
RideAnS [48]

Answer:

x = 1.56

Step-by-step explanation:

so what you have to do is isolate the variable by dividing each side by factors that don't contain the variable.

8 0
3 years ago
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Please explain with working!!! Find the set of values of x that satisfy the inequality 9x^2-15x<6
Oksi-84 [34.3K]

Answer:

-1/3

Step-by-step explanation:

When solving a quadratic inequality, first solve it normally like you would for a normal quadratic equation. We have:

9x^2-15x

Ignore the less than sign and replace it with an equal sign and solve the quadratic for its zeros:

9x^2-15x=6

Subtract 6 from both sides:

9x^2-15x-6=0

Divide everything by 3:

3x^2-5x-2=0

Factor. Find two numbers that equal (3)(-2)=-6 that add up to -5.

-6 and 1 works. Thus:

3x^2-6x+x-2=0\\3x(x-2)+1(x-2)=0\\(3x+1)(x-2)=0

Find the x using the Zero Product Property:

3x+1=0 \text{ or }x-2=0\\x=-1/3\text{ or }x=2

Now, we need to replace the equal signs with symbols again. To do so, we need to test which symbol to place. Let's do the first zero first.

So, the first zero is:

x=-1/3

Assume that the correct symbol is >. Thus,

x>-1/3

Now, pick any number that is greater than -1/3. I'll pick 0 since it's the easiest. Now, plug 0 back into the very original inequality. If it works, then the sign is correct, if it doesn't, then simply use the opposite one. Therefore:

9x^2-15x

0 is indeed less than six, so our first correct solution is:

x>-1/3

For the second one, do the same thing. We have:

x=2

Assume that the correct symbol is <. Thus:

x

Again, pick any number less than 2. I'm going to use 0. Plug 0 back into the original equation

9x^2-15x

Again, this is correct. Therefore, x<2 is also the correct inequality.

So together, we have:

x>-1/3 \text{ and } x

Together, we can write them as:

-1/3

(Note that we don't need to worry about the "or equal to" part since the original inequality didn't have it.)

6 0
3 years ago
Find the difference using fraction bars or a paper and pencil. Write your answer in simplest form.
nasty-shy [4]
First, find the lowest common denominator. That is 12. You only have to change 3/4 into 12ths.

3/4 = 9/12

11/12 – 9/12 = 2/12 = 1/6
5 0
3 years ago
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Identify the mean and standard deviation of the graph
fgiga [73]
The answer is C, mean =100 and standard deviation=15
5 0
3 years ago
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