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photoshop1234 [79]
2 years ago
6

5+15 divided by 3 x 4 to the third power

Mathematics
1 answer:
julia-pushkina [17]2 years ago
5 0

Answer:

325

Step-by-step explanation:

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The average cost of an IRS Form 1040 tax filing at Thetis Tax Service is $138.00. Assuming a normal distribution, if 77 percent
jek_recluse [69]

Answer:

22.97

Step-by-step explanation:

Given that the average cost of an IRS Form 1040 tax filing at Thetis Tax Service is $138.00.

Let x be the average cost an IRS Form 1040 tax filing at Thetis Tax Service

P(X is given

From std normal distribution table we find 77th percentile z value.

z=0.74

Corresponding X value = 155

i.e. 0.74=\frac{155-138}{s} where s is the std deviation

Simplify to get

Std deviation  = \frac{17}{0.74} \\=22.97

8 0
3 years ago
If f(x) = 7x2 - 4x, what is the value<br> of f(2)?<br> F -8<br> J 17<br> G 2<br> K 20<br> H 6
kow [346]

Answer:

K 20

Step-by-step explanation:

f(x) = 7x2 - 4x

f (2) = 7 (2)^2 - 4(2)

= 28 - 8

= 20

Since they replaced the x inside f(x) with 2, just do that the same to the right side, change all x into 2

4 0
3 years ago
What is the mean of these numbers ? <br> 2,8,4,6,5
MrRa [10]

Answer:

5 is the mean

Step-by-step explanation:

4 0
3 years ago
Please help as fast as you cannn
hodyreva [135]

Answer:

-43 < -35

(Negative 43 is less than negative 35).

8 0
2 years ago
At a carnival, food tickets cost $2 each and ride tickets cost $3 each. A total of $1,240 was collected at the carnival. The num
const2013 [10]

Answer:

B

Step-by-step explanation:

The given equations satisfy the given conditions. There are 2 equations and 2 unknowns, so a certain solution can be found.

This can be solved using substitution,

Substituting eqn 2 to eqn 1:

2(2y – 10) + 3y =1240

Simplifying,

y = 180

x = 350

5 0
3 years ago
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