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3 years ago

PLEASE HELP EXTRA HELP NEED STEP BY STEP

Mathematics

2 answers:

Levart [38]3 years ago

5 0

Answer:

16 yards by 14 yards

Step-by-step explanation:

let w be the additional width from the walkway

The total area is then

(w + 10)(w + 8) = 224

Expand

w^2 + 18w + 80 = 224

Subtract 224 from both sides

w^2 + 18w - 144 = 0

Factor (if you can't see how this factors use the quadratic equation)

(w + 24)(w - 6) = 0

w = {-24, 6}

Disregard the -24 since width cannot be negative

w + 10 = 6 + 10 = 16

w + 8 = 6 + 8 = 14

The garden plus walkway is 16 yards by 14 yards

Mila [183]3 years ago

3 0

Answer:

if the garden is 10 by 8 that would equal 80. so you have to take 80 out of 224. it equals 144. so you have to figure out what would equal 144. 12 times 12 equals 144. so that is the dimension for the walkway.

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Meth Barie's ice cream shop wants to decide whether to introduce a new ice cream flavor. They randomly selected 15 customers at

Marianna [84]

Answer:

Meth Barie's ice cream shop should not introduce the new ice cream flavor.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4.01

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Sample size, n = 15

Alpha, α = 0.1

Sample standard deviation, s = 1.6 minutes

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$H_{0}: \mu \leq 4.01\\H_A: \mu > 4.01$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

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$t_{stat} = \displaystyle\frac{4.4 - 4.0}{\frac{1.6}{\sqrt{15}} } = 0.968$

Option B) 0.968

Rejection region:

Now, $t_{critical} \text{ at 0.10 level of significance, 9 degree of freedom } = 1.345$

So the rejection region would be a value of t-statistic greater than 1.345.

Option B) t > 1.345

Conclusion:

Since,

$t_{stat} < t_{critical}$

We fail to reject the null hypothesis and accept the null hypothesis. Meth Barie's ice cream shop should not introduce the new ice cream flavor.

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4 years ago

A building measuring 90m by60m is to be built. A paved area of uniform will surround the building. The area is to have an are of

Effectus [21]

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3 years ago

-2.4f + 0.4f-16-8=<br> help me please

omeli [17]

The answer is -2f -24.
All you gotta do is is combine like terms.
Explanation:
-2.4f + 0.4f = -2f
-16 -8 = -24

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Answer:

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Step-by-step explanation:

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Answer:

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