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2 years ago

The table below shows the amount Allen earns for tutoring based on the number of hours he tutors.

Mathematics

1 answer:

melisa1 [442]2 years ago

6 0

Answer:

Step-by-step explanation:

x=hours

y=earnings

y=rx

30=2r

30/2=r

r=15

Hope this helps!!!

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A large company claims that the average age of their employees is 32 years, with a standard deviation of 4 years. The average ag

4vir4ik [10]

Given that average age of employees of a large company is Normal

X - average age of employees

X:N(32,4)

The average age of employees in sales dept is 27 years.

Prob that an employee, chosen at random, will be younger than 27 years.

= P(X<27)

Let us convert x into Z

Z = (x-32)/4 = -5/4 = -1.25

Reqd prob = P(Z<-1.25) =0.5-0.3925

= 0.1075

Hence 10.56% is the correct answer.

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3 years ago

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Kali spent half of her weekly allowance on clothes. To earn more money her parents let her clean the gutters for $9. What is her

Ber [7]

So to find the answer to this, you have to consider that $\frac{1}{2} x + 9 = 13$ - half because half the pocket money (x) was spend on clothes, then plus 9 because that's how much extra she gained and 13 because that was the result of all the changes.

To solve this, first subtract 9 from both side, which leaves you with $\frac{1}{2} x = 4$ and $\frac{1}{2} x$ is the same as $\frac{1x}{2}$ , so to solve this, multiply both sides of the equation by two, resulting in $x = 8$ . SO from this we can conclude that the weekly allowance is $8

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3 years ago

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Name the property of real numbers illustrated by the equation .

pashok25 [27]

The answer is B-Associative Property

4 0

2 years ago

Find the sum of a finite geometric sequence from n = 1 to n = 8, using the expression −2(3)^n − 1.

Kazeer [188]

The sum if the geometric sequence given by:
an=-2(3)^(n-1)
will be:
when:
n=1
an=-2
when n=2
a2=-6
when n=3
a3=-18

when n=4
a4=-54

when n=5
a5=-162

when n=6
a6=-486

when n=7
a7=-1458

when n=8
a8=-4374

thus the summation of the term will be:
Sn=(-4374+-1458+-486+-162+-54+-18+-6+-2)
Sn=-6560
the answer is -6560

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2 years ago

Some numbers are 1/4 as large as another number. the difference of a number is 12.

Eddi Din [679]

Answer:

Step-by-step explanation:

x = ¼y

y - x = 12

y - ¼y = 12

¾y = 12

y = 16

x = ¼y = 4

3 0

2 years ago