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Jobisdone [24]
3 years ago
13

Steve works at Lowes and gets a 10% commission for each appliance he sells. If he sells $5,680 worth of appliances this week, ho

w much commission will he earn?
Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0

Answer:

idk

Step-by-step explanation:

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PLZ HELP<br> Do the ones you know!
liq [111]
The first one in the top is 180 degrees so 8(15) and 8x15=120 so x on the other side is 60.
3 0
3 years ago
Someone claims that the breaking strength of their climbing rope is 2,000 psi, with a standard deviation of 10 psi. We think the
denpristay [2]

Answer:

The sample size must be greater than 37 if we want to reject the null hypothesis.

Step-by-step explanation:

We are given that someone claims that the breaking strength of their climbing rope is 2,000 psi, with a standard deviation of 10 psi.

Also, we are given a level of significance of 5%.

Let \mu = <u><em>mean breaking strength of their climbing rope</em></u>

SO, Null Hypothesis, H_0 : \mu = 2,000 psi       {means that the mean breaking strength of their climbing rope is 2,000 psi}

Alternate Hypothesis, H_A : \mu < 2,000 psi      {means that the mean breaking strength of their climbing rope is lower than 2,000 psi}

Now, the test statistics that we will use here is One-sample z-test statistics as we know about population standard deviation;

                         T.S.  =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = ample mean strength = 1,997.2956 psi

            \sigma = population standard devaition = 10 psi

            n = sample size

Now, at the 5% level of significance, the z table gives a critical value of -1.645 for the left-tailed test.

So, to reject our null hypothesis our test statistics must be less than -1.645 as only then we have sufficient evidence to reject our null hypothesis.

SO,  T.S. < -1.645   {then reject null hypothesis}

         \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } < -1.645

         \frac{1,997.2956-2,000}{\frac{10}{\sqrt{n} } } < -1.645

         (\frac{1,997.2956-2,000}{10}) \times {\sqrt{n} } } < -1.645

          -0.27044 \times \sqrt{n}< -1.645

               \sqrt{n}> \frac{-1.645}{-0.27044}

                 \sqrt{n}>6.083

                  n > 36.99 ≈ 37.

SO, the sample size must be greater than 37 if we want to reject the null hypothesis.

7 0
3 years ago
What is the domain of the functions below: b y= 5x/|x−1| −1
sdas [7]

Answer:

<h2>DOMAIN: The set of all real numbers except 0</h2>

\large\boxed{x\in\mathbb{R}-\{0\}}

Step-by-step explanation:

We have a faction.

We know: the denominator must be different from 0. Therefore

y=\dfrac{5x}{|x-1|}-1\Rightarrow |x-1|\neq0\iff x-1\neq0\iff x\neq1

4 0
3 years ago
Happy Paws charges $19.00 plus $2.50 per hour to keep a dog during the day. Woof Watchers charges $14.00 plus $3.75 per hour. Co
avanturin [10]
$19.00 plus $2.50 = $21.50.
$14.00 plus $3.75 = $17.75
add $3.75 to $17.75 once to get 21.50
2 hours at Woof Watchers is the same as 1 hour at Happy Paws. <Hope that helped>
3 0
3 years ago
Amy can buy an 5-pound bag of dog food for $7.40 or
svetoff [14.1K]

Answer:

4-pound bag

Step-by-step explanation:

7.40/5 = 1.48

5.48/4 = 1.37

$1.37 is cheaper

7 0
2 years ago
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