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poizon [28]
3 years ago
12

It costs $24 for admission to an

Mathematics
1 answer:
Llana [10]3 years ago
6 0
360$

Explanation: 24$•15=360
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Add or substract the linear expression.
STatiana [176]

Answer:

-7x - 6

Step-by-step explanation:

1

Distribute

(−2+5)−1(6+4)+(−7)

(−2+5)−6−4+(−7)

2

Eliminate redundant parentheses

(−2+5)−6−4+(−7)

−2+5−6−4+−7

3

Add the numbers

−2+5−6−4+−7

−2−6−6+

4

Combine like terms

−2−6−6+

Answer:

−7−6

4 0
3 years ago
10. What is an expression for the perimeter of the triangle?
Whitepunk [10]

Answer:

See explanation, and comment for more details!

Step-by-step explanation:

10. The perimeter of any shape is the sum of the length of the sides, which means that the perimeter of this triangle is x+y+z.

11. Since this is a right triangle, the two legs form the height and base. The area of this triangle is therefore x*y/2.

12.

a. x=3, y=4, z=5

b. x=\sqrt{2}, y=\sqrt{2}, z=2

c.x= \sqrt{3}, y=2, z=\sqrt{7}

Hope this helps!

4 0
3 years ago
Write a word problem that can be solved using the equation 2(h+8)=28
Helga [31]

Answer:

See below.

Step-by-step explanation:

2 times 8 more than the height of a garden wall is 28 feet. How high is the garden wall?

6 0
3 years ago
Gianna Rojas
vovangra [49]

Answer:

Step-by-step explanation:

Bdbdb

5 0
3 years ago
An ammunition producer claims his best product has an average lifespan of exactly 18 years. A skeptical product evaluator asks f
DochEvi [55]

Answer:

The 90% confidence interval for the true mean lifespan of this product is between 13.1 and 16.9 years.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 50 - 1 = 49

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 49 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.6766

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.6766\frac{8}{\sqrt{50}} = 1.9

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 15 - 1.9 = 13.1 years

The upper end of the interval is the sample mean added to M. So it is 15 + 1.9 = 16.9 years

The 90% confidence interval for the true mean lifespan of this product is between 13.1 and 16.9 years.

8 0
2 years ago
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