45 is 25% of a number. find the number.

Mathematics

2 answers:

neonofarm [45]2 years ago

8 0

25 × x = 45

or 25÷100 × x= 45

max2010maxim [7]2 years ago

6 0

25 × x = 45

or 25÷100 × x= 45

multiplying both sides by 100 and dividing both sides by 25, we have x = 45×100÷25

therefore, x = 180

( if you use a calculator simply enter 45×100÷ 25)

You might be interested in

Randy walks 1/2mile each 1/5 hour.how far will randy walk in one hour ?

Irina18 [472]

1/2 mile / 1/5 hour = x miles/ 1 hour

using cross products

1/2 * 1 = x * 1/5

multiply by 5 on each side

1/2*5 = x

x = 5/2 miles

x = 2 1/2 miles

5 0

3 years ago

Triangle abc is congruent to triangle xyz. angle a measures 50 degrees angle b measure 2 x plus 40 degrees and angle z measures

Anarel [89]

Because these triangles are congruent, then angle a is the same degree measure as angle x; angle b is the same as y; and angle c is the same as z. We also know that, because of the Triangle Angle-sum Theorem, all the angles of a triangle have to add up to equal 180 degrees. So for us that means that a+b+c(which is also z) = 180. 50 + 2x + 40 + 4x + 8 = 180. Combining like terms we have 6x + 98 = 180. Subbtracting 98 from both sides gives us 6x = 82 and x = 13 2/3

3 0

2 years ago

If 2x2 + y2 = 17 then evaluate the second derivative of y with respect to x when x = 2 and y = 3. Round your answer to 2 decimal

Vera_Pavlovna [14]

Answer:

y''=-1.26

Step-by-step explanation:

We are given that $2x^2+y^2=17$