Ninety-nine decreased by 4/5 of 80 is the same as 5/8 of what number?

Mathematics

2 answers:

mixer [17]3 years ago

8 0

4/5 of 80 is 64
99-64=35
35/5=7
7x8=56
Answer is 56

Marina86 [1]3 years ago

3 0

The answer is 56, hope this helps

You might be interested in

What is the answer for - 1 7/8+ (-3 1/2)

TiliK225 [7]

-141/8

using BODMAS you open the bracket

-17/8 -31/2

Now expand the fraction in the first photo above

-17-124/8

-141/8 or 17.625

7 0

3 years ago

Read 2 more answers

Right triangles and trigonometry help!

Maslowich

Step-by-step explanation:

$sin \: 45 \degree = \frac{39}{z} \\ \\ \therefore \: \frac{1}{ \sqrt{2} } = \frac{39}{z} \\ \\ \therefore \: z = 39 \sqrt{2} \\ let \: p \: be \: the \: perpendicular \: \\ \\\therefore \: tan \: 45 \degree = \frac{39}{p} \\ \\ \therefore \:1 = \frac{39}{p} \\ \\ \therefore \:p = 39 \\ \\ sin \: 60 \degree = \frac{39}{x} \\ \\ \therefore \: \frac{ \sqrt{3} }{2} = \frac{39}{x} \\ \\ \therefore \: x = \frac{78}{ \sqrt{3} } \\ \\ \therefore \: x = \frac{78 \sqrt{3} }{ 3 } \\ \\ \therefore \: x = 26 \sqrt{3} \\\\tan\: 60 \degree = \frac{39}{y} \\ \\ \therefore \: \sqrt{3} = \frac{39}{y} \\ \\ \therefore \: y = \frac{39}{ \sqrt{3} } \\ \\ \therefore \: y= \frac{39 \sqrt{3} }{ 3 } \\ \\ \therefore \: y = 13 \sqrt{3} \\$