Ask question

Ask question

All categories

1 month ago

5

You just finished paving a rectangular driveway measuring 75 feet by 20 feet. You charged the customer $1,000. After deducting t

he expenses shown below, how much profit did your company make on this job?

1 answer:

Zina [12.3K]1 month ago

3 0

The company earned 292.5

You might be interested in

Melissa has three different positive integers. She adds their reciprocals together and gets a sum of $1$. What is the product of

Svet_ta [12734]

Given the three integers are $a,b,c$ , we arrive at

$\dfrac1a+\dfrac1b+\dfrac1c=1$

We can merge the fractions on the left side:

$\dfrac{bc}{abc}+\dfrac{ac}{abc}+\dfrac{ab}{abc}=\dfrac{bc+ac+ab}{abc}=1$

$\implies abc=bc+ac+ab$

4 0

1 month ago

Read 2 more answers

Beth is using triangular shaped pieces to cover the front of a pillow. The base of each triangle is 9 inches and the height of

lawyer [12517]

The result is 27 square inches

8 0

1 month ago

Read 2 more answers

The sharks are fed three times a day. During the morning feeding , 2/15 tons of fish is fed. During the afternoon feeding, the w

zzz [12365]

Answer:

1/6 ton of fish is provided during the night feeding.

Step-by-step explanation:

The fish consumed in the morning is $\dfrac{2}{15}$ tons, and the amount of fish served in the afternoon is $\dfrac{1}{15}$ greater than in the morning. This means

$\dfrac{2}{15} +\dfrac{1}{15}$

Let’s represent the quantity of fish given at night as $x$ , and if the total fish fed throughout the day equals $\dfrac{1}{2}$ , we have

$\dfrac{2}{15}+(\dfrac{2}{15} +\dfrac{1}{15})+x=\dfrac{1}{2}$

By summing the numerators on the left side, we derive:

$\dfrac{5}{15} +x=\dfrac{1}{2}$

and subtracting $\dfrac{5}{15}$ from both sides allows us to isolate $x:$

$x=\dfrac{1}{2} -\dfrac{5}{15}$

Since $\dfrac{5}{15} =\dfrac{1}{3}$ , we derive

$x=\dfrac{1}{2}-\dfrac{1}{3}$

The common denominator for the fractions is 6; hence, we write the equation in the form

$x=\dfrac{3}{6}-\dfrac{2}{6}$

and simplifying the numerators results in:

$\boxed{x=\dfrac{1}{6} }$

which indicates the amount of tons fed during the night feeding.

7 0

2 months ago

The diameters of aluminum alloy rods produced on an extrusion machine are known to have a standard deviation of 0.0001 in. A ran

lawyer [12517]

a) The hypothesis states that the mean is different from 0.5025 and has been rejected. b) The p-value computed is 0. c) A confidence interval is established as 0.50456 < u < 0.50464. The hypothesis testing is based on a given standard deviation (s.d.) of 0.0001, a sample mean of x = 0.5046 from a sample size of n = 25. The two-sided alternative and significance level of 0.05 were assumed. A Z-score was calculated to show that the hypothesis is rejected since the mean differs from 0.5025.

3 0

2 months ago