All categories

2 years ago

I need an answer as soon as possible

Mathematics

1 answer:

Dahasolnce [82]2 years ago

3 0

Answer:

The equation would be 7.50x + 15=90

Step-by-step explanation:

So the the total you are trying to find is 90. So the equation would equal 90. Now since we are trying to find a unknown variable we use x. This results in 7.50x. Now 15 is a known variable so it will just stay the same. The amount of hours would be 10.

You might be interested in

You use a gift card to buy a pair of shorts for $8. There is $32 left on the gift card after your purchase. What was the origina

LenKa [72]

40 Dollars Was the original ammount

6 0

2 years ago

The figure shows a line graph and two shaded triangles to find the slope: (picture below)

just olya [345]

Answer:

the answer is d because it is

7 0

3 years ago

Read 2 more answers

Twelve percent of the population is left handed. Approximate the probability that there are at least 20 left-handers in a school

DochEvi [55]

Answer:

Step-by-step explanation:

We would assume a binomial distribution for the handedness of the population. Let x be a random variable representing the type of handedness in the population. The probability of success, p is that a randomly chosen person is left handed only. Then probability of failure is that a chosen person is not left handed only(right handed only or both).

p = 12/100 = 0.12

number of success, x = 20

n = 200

the probability that there are at least 20 left-handers is expressed as P(x ≥ 20)

From the binomial probability calculator,

P(x ≥ 20) = 0.84

8 0

3 years ago

14=2y/5 and explain how you got it??

son4ous [18]

2y/5 is the same thing as 2/5 times y so

14=2/5(y) then you divide both sides by y and you get

14/y=2/5 then from there multiply both sides by 1/14 to get

y=0.03

5 0

2 years ago

Aleksandr-060686 [28]

Answer:

The expressions that give the value of y are A - 3B and (1/3)A - B

The solution is (27/13, -60/13)

Step-by-step explanation:

We can see both equation A and equation B.

Equation A: 2x + (1/4)y = 3

Equation B: (2/3)x - y = 6

To find the value of y, we have to solve both equations A and equation B simultaneously. This is done by multiplying equation B by 3 and subtracting from equation A (A - 3B) to get:

(13/4)y = -15

y = -60/13

you can also get y by dividing equation A by 3 and subtracting equation B (1/3A - B)

Put y = -60/13 in equation A to get x:

2x + (1/4)(-60/13) = 3

2x = 3 + 15/13

2x = 54/13

x = 27/13

The solution is (27/13, -60/13)

7 0

3 years ago