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4 years ago

What is the similarity between calculating a percent, proportion, and rate?

Mathematics

1 answer:

cricket20 [7]4 years ago

6 0

Answer:

use of fraction method

Step-by-step explanation:

Percentage% is a number/ the total× 100%

Proportion is x:y:z which is the same as x/y/z

rate is also in the same format

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In an English test, right students score 14,13,17,11,19,20,14,and 15. What is the range of the first 6 even numbers greater than

Evgesh-ka [11]

Answer:

Concept & Calculation of Range .

Step-by-step explanation:

11 , 13 , 14 , 14 , 15, 17 , 19 , 20

Even numbers greater than 11 = 14 , 14 , 20

Range = Highest Value - Lowest Value = 20 - 14 = 6

Entire data range = 20 - 11 = 9

Range of all numbers greater than 11 (ie 13 , 14 , 14 , 15, 17 , 19 , 20) = 20 - 13 = 7

6 0

3 years ago

What number would you add to both sides of x2 + 7x = 4 to complete the square?

cricket20 [7]

Answer:

(7/2)2

Step-by-step explanation:

5 0

4 years ago

Can someone help me solve this

oksano4ka [1.4K]

Yeah what do you need help on

8 0

3 years ago

Which number is an irrational number

iragen [17]

Square root of 15 because you don't know what know is going to go after it, unlike the others where you can guess the numbers that goes after it

7 0

3 years ago

Read 2 more answers

Differential Equations Problem

fgiga [73]

Answer:

$y=\frac{t^2e^{2t}}{3}+ce^{2t}$

Step-by-step explanation:

We have given differential equation $\frac{dy}{dt}-2y=t^2e^{2t}$

We know that linear differential equation is given by $\frac{dy}{dt}+Py=Q$

On comparing with standard equation P = -2 and Q= $t^2e^{2t}$

Now integrating factor $IF=e^{-Pdt}$

$IF=e^{-2dt}=e^{-2t}$

Now solution of differential equation is given by

$y\times IF=\int\ IF\times Q\ dt$

$y\times e^{-2t}=\int\ e^{-2t}\times t^2e^{2t}\ dt$

$y\times e^{-2t}=\frac{t^2}{3}+c$

$y=\frac{t^2e^{2t}}{3}+ce^{2t}$

7 0

4 years ago