Factor completely: 3x^2 – 21x + 30A. 3(x – 2)(x – 5)
B. (3x – 2)(x – 15)
C. 2(x – 3)(x – 10)
D. (x – 2)(x – 5)

Answers

Answer 1

Answer: The answer is going to be A.

You first factor 3 out getting x^2-7x+10

Then you factor that so (x-2)(x-5) then tack that 3 onto the end so 3(x-2)(x-5)

Answer 2

Answer: a because 3(x^2-7x+10)
3(x-2)(x-5)

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A haircut cost $20.Sales tax is 4.75%.Is $25 sufficent to cover the haircut with tax and a 15% tip?

Answers

no it wouldn't if I am wrong I am sorry

Answer:

23.95 he DOES have sufficient money to cover for the haircut

Step-by-step explanation:

I got the right answer :)

The earnings, E of a DJ who charges fee of $250 and an additional $40 per hour,h. NEED HELP ASAP

Answers

Given that you say the question doesn't state the duration of work, I suspect it is asking for an equation to describe E in any situation.

Therefore, let's take x to be the number of hours he is working for.

We know he earns a base $250, so E is going to be 250+something.

That something we know is a multiple of the number of hours he is working for. If it is $40 per hour, it is going to be 40x as if x is 1 that gives 40, if it is 2 it gives 80 and so on.

If we substitute this all in we get:

E = 250 + 40x
Where x is the number of hours he works for.

Steps to convert 36/10 into a decimal

Answers

Here is a technique that converts ANY fraction into a decimal,
no matter WHAT the fraction is. Oh you're going to thank me for this !

A fraction is always a short way to write a division problem.
EVERY fraction you will ever see means

(the top number) divided by (the bottom number) .

If you'll simply pull out your pencil or your calculator and actually
DO the division, the answer you get will be the decimal form of
the fraction.

36 divided by 10 is 3.6 .

another easy way to convert fractions into decinal is:
36/10 (tenth has 1 digit after decimal point) so 3.6
if it was 36/100 (let see how many 0s? 2 zeros so after decimal we need 2 digits so would be 0.36.
36/1000 same thing, lets look at the zeros and the answer would be 0.036 and so on

Cara ran 3 miles in 30 minutes. What is her constant rate of change in miles per hour?

Answers

Answer:

6 mph

Step-by-step explanation:

3 miles -----> takes 30 minutes

recall that 30 minutes = 1/2 an hour = 0.5 hours

hence,

3 miles -----> takes 30 minutes = 0.5 hrs

therefore her rate of change (i.e speed) in mph

= number of miles ran ÷ time taken in hours

= 3miles ÷ 0.5hrs

= 6 mph

Answer:

curious if you got this one?

Which does NOT represent a constant rate of change of 70 miles per hour for a car?

Question 4 options:

The car travels 245 miles in 3.5 hours.

The car travels 140 miles in 2 hours.

d = 70t, where d represents distance in miles and t represents time in hours.

d = 70t, where d represents distance in kilometers and t represents time in hours.

Step-by-step explanation:

On a class test, Lesley scored 4.5 points more than her friend Cathy. Lesley scored 81.5 points. Cathy's score, x, can be found using the equation below.The solution to the equation was calculated to be x = 36. Is this solution reasonable?

A.
Yes, it is reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored more than 81.5 points.
B.
No, it is not reasonable because Lesley scored 4.5 points less than Cathy. Cathy scored less than 81.5 points, not more.
C.
Yes, it is reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored 86 points.
D.
No, it is not reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored less than 81.5 points, not more.