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Gnesinka [82]
2 years ago
11

15-9x in written expression

Mathematics
1 answer:
IrinaK [193]2 years ago
7 0

Answer:

Step-by-step explanation:

there u go

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A relay team of 4 people runs 3 miles.If each person runs the same distance,How many miles does each person run?
Len [333]
Well first you have to divide 3 by 4, which is 0.75 or 3/4
6 0
3 years ago
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Two companies Company A and Company B offer the same starting salary of $20,000 per year. Company A gives a raise of $1000 each
Bingel [31]
A.) A = 20000 + 1000n
B = 20000(1.04)^n

b.) For A, sn = n/2(2a + (n - 1)d)
s20 = 20/2(2(20000) + 1000(20 - 1)) = 10(40000 + 19(1000)) = 10(40000 + 19000) = 10(59000) = $590,000
For B, sn = a(r^n - 1)/(r - 1)
s20 = 20000((1.04)^20 - 1)/(1.04 - 1) = 20000(2.191 - 1)/0.04 = 20000(1.191)/0.04 = 23822.46 / 0.04 = $595,561.57

c.) Using a graphing calculator, it takes 18 years for the
<span>total amount earned a company B is greater that the total amount of earned at company A.</span>
5 0
3 years ago
A Simple random sample of 100 8th graders at a large suburban middle school indicated that 84% of them are involved with some ty
Setler [38]

Answer: a) (0.755, 0.925)

Step-by-step explanation:

Let p be the population proportion of 8th graders are involved with some type of after school activity.

As per given , we have

n= 100

sample proportion: \hat{p}=0.84

Significance level : \alpha= 1-0.98=0.02

Critical z-value : z_{\alpha/2}=2.33  (using z-value table)

Then, the 98% confidence interval that estimates the proportion of them that are involved in an after school activity will be :-

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

i.e. 0.84\pm (2.33)\sqrt{\dfrac{0.84(1-0.84)}{100}}

i.e. \approx0.84\pm 0.085

i.e. (0.84- 0.085,\ 0.84+ 0.085)=(0.755,\ 0.925)

Hence, the 98% confidence interval that estimates the proportion of them that are involved in an after school activity : a) (0.755, 0.925)

3 0
3 years ago
Simplify the expression. 6 + (14 – 6) • 3 + 2 • 3 PLZ HELP
LiRa [457]
Your answer will be 8
3 0
3 years ago
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−10=2y<br><br> Hello<br><br> Help <br><br> Me
marin [14]
The answer is -5

Explanation: Divide 2 to get rid of the top number. It looks like this

-10. 2y
___. ___

2. 2


What this does is remove the two from the Y and sets it by itself. Then you divide the -10, and the answer is -5

7 0
3 years ago
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