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2 years ago

A store pays $60 for shoes and sells them for $90. What is the percent mark up?

Mathematics

1 answer:

Anton [14]2 years ago

5 0

Answer:

50%

Step-by-step explanation:

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A train is traveling at a constant speed of 90 miles per hour. How many feet does it travel in 10 seconds? Remember that 1 mile

Flauer [41]

1 mile = 5280 feet

at 90 mile per hour, you have 5280 *90 = 475 200 feets

an hour is 60*60 = 3600 second

so in 1 second the train travel : 475 200 /3600 = 4752 /36 = 132 feets

so in 10 seconds : 132*10 = 1320 feets.

7 0

2 years ago

A company sells widgets. The amount of profit y made by the company is related to the selling price of each widgets x by the giv

SCORPION-xisa [38]

Answer:

The maximum amount of profit is 32

Step-by-step explanation:

Given

$y=-x^2+64x-292$

Required

Determine the maximum profit

This is calculated by calculating the maximum of the function.

A quadratic function is of the form

$y = ax^2 + bx + c$

and its maximum is:

$Max = \frac{-b}{2a}$

So: $y=-x^2+64x-292$

We have that

$a = -1$

$b = 64$

$c = -292$

$Max = \frac{-b}{2a}$

$Max = \frac{-64}{2 * -1}$

$Max = \frac{-64}{-2}$

$Max = 32$

<em>Hence, the maximum amount of profit is 32</em>

8 0

2 years ago

Read 2 more answers

Easy question for points

posledela

Answer:

I believe the answer is -17.

6 0

2 years ago

Which equation represents the relationship between the angles in this figure?

mrs_skeptik [129]

Answer:

Step-by-step explanation:

sum of angles on a straight line = 180

b + b + 148 = 180

2b + 148 = 180

3 0

3 years ago

Read 2 more answers

How many L of A 90% saline solution must be mixed with 4 L of a 50% saline solution to make a 74% solution ?

insens350 [35]

Answer:

6 L

Step-by-step explanation:

Given two solutions:

1st solution is 90% saline solution. Let the volume of this solution be $x$ litres.

2nd solution is 50% saline solution. Volume of this solution = 4 L

Resultant solution is 74% saline.

To find:

The volume of 1st solution = ?

Solution:

Total volume of the 74% saline mixture = (4+ $x$ ) Litres

We can write equation here, as per the percentage of saline in the mixtures.

90% of $x$ L + 50% of 4 L = 74% of ( $x$ +4)

$\Rightarrow \dfrac{90x}{100} + \dfrac{50}{100}\times 4 = \dfrac{74}{100}\times (x+4)\\\Rightarrow 90x + 200 = 74x+296\\\Rightarrow 90x-74x = 296-200\\\Rightarrow 16x = 96\\\Rightarrow x = \bold{6\ L}$

Therefore, the volume must be <em>6 L</em>.

8 0

3 years ago