How do you get 25% of what number is 21

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Answer 1

Answer: So the question is 25% of what number is 21. Lets turn that into an equation: let x be the number we are looking for. We need to take 25% from it and we know that that is equal to 21. Mathematically: 25% * x= 21. Or: (25/100) * x = 21. When we multiply both sides with 100 and divide both sides by 25 we get: x=21*(100/25). And we get that x=84.

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a pedestal in a craft store is in the shape of a triangular prism. The bases are right triangles with side lengths of 12 centimeters, 16 centimeters, and 20 centimeters. The store owner wraps a piece of rectangular cloth around the pedestal, but does not cover the identical bases of the pedestal with cloth. The area of the cloth is 192 square centimeters. What is the distance around the base of the pedestal? how do you know? What is the height of the pedestal? how did you find your answer?
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the lenght of a rectangle is 2 cm less than 7 times the width. the perimeter is 60 cm . find the width and lenght

Answers

First, you want to establish your equations.

L=7W-2
P=60

This is what we already know. To find the width, we have to plug in what we know into P=2(L+W), our equation to find perimeter.

60=2(7W-2+W)

Now that we only have 1 variable, we can solve.

First, distribute the 2.
60=14W-4+2W

Next, combine like terms.

60=16W-4

Then, add four to both sides.

64=16W

Lastly, divide both sides by 16

W=4

To find the length, we plug in our width.

7W-2

7(4)-2

28-2

L=26

A Subway sandwich costs $5.56. The same sand which has 453 calories. a. Use unit rates to find the cost per calorie of the sandwich. Round to the nearest thousandth.

Answers

$5.56/ 453 calories= $0.01227/calorie.

Rounded to the nearest thousandth, the final answer is $0.012/calorie~

A) 20 milligrams of the drug lincomycin is to be given for each kilogram of a person's weight the drug is be mixed with 250 cc of a normal saline solution, and the mixture is to be administered intravenously over a 1 hour period. weight 196 lb determine the dosage of the drug givenb) at what rate per minute should the 250 cc solution be adminstered

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Answer:

you need to convert pounds to kilograms. 196 pounds is 88.904 kilograms. The directions tell you that 20 milligrams of the drug is to be administered for each kilogram of a person's weight. Now you need to multiply 88.904 by 20. That should give you 1778.08 milligrams of lincomycin. You would then mix 250 cc's of saline solution to the 1778.08 milligrams of lincomycin; but I think its just asking you how much lincomycin to administer.

at what rate per minute should the 250 cc solution be adminstered

There are 14 days in 2 weeks. About how many 2- week periods are there in 1326 days?

Answers

1326/14= 94.71
..........

AC = 4, AE = 7, AD = 10, what is the length of AB?

PLZ HELP

Answers

The length of AB is 13 because it is skipping by 3 and 10+3= 13

The length of AB is 13 because 4,7,10,13.

What is an equation of the line that passes through the point (4,-3) and is parallel to the line x-2y=2

Answers

The equation of line is, $y=(1)/(2) x-5$ , which is parallel to given line $x-2y=2$

The slope of line,

$x-2y=2\n\n2y=x-2\n\ny=(1)/(2)x-1$

Compare above equation of line from y = mx +c

So that, slope of given line is 1/2.

The slope of parallel lines will be always same.

Equation of required line is, $y=(1)/(2) x+c$

Since, line passing through point (4, -3.

$-3=(1)/(2)*4+c\n\nc=-3-2=-5$

Thus, equation of line is, $y=(1)/(2) x-5$

Learn more:

brainly.com/question/1417317

The answer is y=1/2x-5.. first you have to solve for y in the equation and you should get y=1/2x-5 then you substitute the values in slope intercept form

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