3 years ago

30 is 60% of what number?

Mathematics

2 answers:

Anni [7]3 years ago

3 0

30/0.6=50 or 30/(60/100)

Montano1993 [528]3 years ago

3 0

30 x 60%=50
with of all you have to do is multiply it together
with is you have to divide

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What is the solution to the equation 7/8 (x-1/2)= -49/80

Whitepunk [10]

Step One
Multiply both sides by 80
7/8(x - 1/2)*80 = (-49/80) * 80

Step Two
7(x - 1/2 ) * 10 = - 49 Divide both sides by 7
(x - 1/2) * 10 = -49/7
(x - 1/2) * 10 = - 7 Remove the brackets on the left.
10x - (1/2)*10 = -7
10x - 5 = - 7 Add 5 to both sides.
10x = -7 + 5
10x = -2 Divide by 10
x = -2/10
x = - 0.2

Step Three
Check
We better check this one.
7/8*(-0.2 - 1/2)
7/8* (-.2 - 0.5)
7/8* (-0.7)
- 4.9/8 Now you can do one of two things. The easiest and simplest is to multiply top and bottom by 10

-4.9*10 / 8 * 10
-49 / 80 Which is the same as the right hand side.

8 0

3 years ago

Please help 40 points

Nadusha1986 [10]

Answer:

1- SSS (C)

2-Heron's Formula(B)

3-34.98(B)

Step-by-step explanation:

I just took the test!!!

8 0

4 years ago