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2 years ago

Pleas help me for 20 points

Mathematics

2 answers:

Anvisha [2.4K]2 years ago

7 0

Answer:

240sqin

Step-by-step explanation:

if you convert 4/3ft into inches you get 16 inches so multiplty 15x16=204sqin Hope this helps! ;-)

nydimaria [60]2 years ago

7 0

Answer:

234

Step-by-step explanation:

area = length × breadth

= 15.6in × 15in

= 234in²

1ft = 15in

4/3 = 15.6in

hope it helps :)

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Solution description

Tpy6a [65]

Answer: A solution is a homogeneous mixture of two or more substances. A solution may exist in any phase. A solution consists of a solute and a solvent. For example, in a saline solution, salt is the solute dissolved in water as the solvent.

Step-by-step explanation:

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3 years ago

Conduct the appropriate hypothesis test and compute the test statistic. A company that produces fishing line undergoes random te

andre [41]

Answer:

Option D) Yes, because the test statistic is -2.01

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 30 pound

Sample mean, $\bar{x}$ = 29.1 pounds

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, s = 2 pounds

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 30\text{ pounds}\\H_A: \mu < 30\text{ pounds}$

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

Formula:

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

Putting all the values, we have

$t_{stat} = \displaystyle\frac{29.1 - 30}{\frac{2}{\sqrt{20}} } = -2.012$

Now,

$t_{critical} \text{ at 0.05 level of significance, 19 degree of freedom } = -1.729$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis. Thus, there were enough evidence to conclude that the fishing line breaks with an average force of less than 30 pounds.

Option D) Yes, because the test statistic is -2.01

5 0

4 years ago

The sequence a, = 2, 4, 8, 16, 32, ... is the same as the sequence ay = 2,

blondinia [14]

Answer:

TRUE

Step-by-step explanation:

TRUE

a_1 = 2

a_n = 2*(an_1)

if we start with 2, we would get

a_2 = 2*(a_1) = 2*(2) = 4

a_3 = 2*(a_2) = 2*(4) = 8

a_4 = 2*(a_3) = 2*(8) = 16

a_5 = 2*(a_4) = 2*(16) = 32

and so on

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3 years ago

Which direction does the graph of f(x) = 9 − 3x2 + 1 open?

Daniel [21]

Down because the slope is negative

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4 years ago

Read 2 more answers

A playground is being designed where children can interact with their friends in certain combinations.

levacccp [35]

Answer:

Step-by-step explanation:

I think 17

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3 years ago