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V125BC [204]
2 years ago
15

PLEASE HELP

Mathematics
2 answers:
nordsb [41]2 years ago
8 0
5 1/4 feet you divide 44 5/8 by the combined length, 8 1/2, and get 5 1/4.
mario62 [17]2 years ago
6 0
Answer: 5¼


Step-by-step explanation:
Length = 4 + 4.5 = 8.5 ft
Area = 44⅝
Width = Area/ Length
44⅝ ÷8.5
357/68 × 1/8.5 = 5¼



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A new youth activity center is being built in oak valley. the perimeter of the rectangular playing field is 332 yards. the lengt
allsm [11]

In this question, it is given that

A new youth activity center is being built in oak valley. the perimeter of the rectangular playing field is 332 yards. the length of the field is 5 yards less than double the width.

Let the width is x yards . And length is 5 yards less than double the width, so length is (2x-5) yards  .

Perimeter is the sum of all sides, that is

x+2x-5+x+2x-5 = 332
\\
6x-10 = 332
\\  6x = 342
\\
x = 57 yards

So the width is 57 yards and length is

2x-5 = 2*57-5 = 109 yards

8 0
3 years ago
Read 2 more answers
Which expression is equivalent to square root 8/x^6? assume x > 0
Alik [6]
<h2>Answer:</h2>

<u>The equivalent expression is </u><u> (2 / x ^ 3) * sqrt (2)</u>

<h2>Step-by-step explanation:</h2>

We have sqrt 8 / x ^ 6

 Rewriting the expression:

 =sqrt (8 / x ^ 6)

 =sqrt (2 * 4 / ((x ^ 2) * (x ^ 2) * (x ^ 2)))

 =(2 / (x * x * x)) sqrt (2)

= (2 / x ^ 3) * sqrt (2)

We get finally

 (2 / x ^ 3) * sqrt (2)

3 0
3 years ago
Read 2 more answers
Simplify this expression.
frozen [14]

Answer:

2x + 12

Step-by-step explanation:

2(10)+2(x+4)

distribute the 2

20 + 2x - 8

add/ subtract like terms

2x + 12

6 0
3 years ago
Read 2 more answers
Bob paid 17.50 for a box of cards and .35 each for 18 stamps. What was the total cost in dollars and cents of the box of cards a
alexgriva [62]
$23.80 for a box of cards and 18 stamps
8 0
3 years ago
Assume that body masses of Goldfinch birds follow a normal distribution with standard deviation equal to 0.04 oz. An ornithologi
il63 [147K]

Answer:

The formula to generate 70% confidence interval is: [\overline{x} - 0.013, \overline{x} + 0.013], in which \overline{x}  is the sample mean.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.7}{2} = 0.15

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.15 = 0.85, so Z = 1.037.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

Assume that body masses of Goldfinch birds follow a normal distribution with standard deviation equal to 0.04 oz.

This means that \sigma = 0.04.

Sample of 10 birds:

This means that n = 10.

The margin of error is of:

M = z\frac{\sigma}{\sqrt{n}}

M = 1.037\frac{0.04}{\sqrt{10}}

M = 0.013

The lower end of the interval is the sample mean of \overline{x} subtracted by M.

The upper end of the interval is the sample mean of \overline{x} added to M.

Then, the formula to generate 70% confidence interval is: [\overline{x} - 0.013, \overline{x} + 0.013], in which \overline{x}  is the sample mean.

8 0
3 years ago
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