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Verdich [7]
3 years ago
10

Substitute and solve; 7(5f - 3n) -8 when n = 3 and f = 7

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
7 0

Answer:

174

Step-by-step explanation:

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Write 2/15 as a decimal.
Cloud [144]
If you need to write a number as a decimal, it means that you need to write is a an x divided by a power of 10.
you can use this formula:
\frac{2}{15} = \frac{x}{10}

now let's multiply both sides by 10:
\frac{20}{15} = x
and simplyfy:
(by dividing the first fraction's elements by 5)
\frac{4}{3} = x

change improper fraction into a mixed number
1\frac{1}{3} = x

and 1 over 3 is 0.33333...

so the  answer is 1.333333 - we can also write it as 1.(3)
5 0
3 years ago
A company that makes​ hair-care products had 4,000 people try a new shampoo. Of the 4,000 ​people, 28 had a mild allergic reacti
lyudmila [28]

Answer:

0.007%

Step-by-step explanation:

4000/28=0.007%

7 0
3 years ago
How many numbers multiple of 3 are in the range [2,2000]?
amm1812

Answer: so there are 666 multiples of 3 between 2 and 2000.

Step-by-step explanation:

the smallest number = 3 which is 3*1. The largest number is = 1998 = 3*666

multiples of 3 between {2,2000} = 666-1+1 = 666

7 0
3 years ago
What is the sum of 90 minutes and 50 minutes? 130 minutes 1 hour, 40 minutes 2 hours 2 hours, 20 minutes
LiRa [457]
90 mins + 50 mins = 140 mins 
60 mins ==1 hr  2*60 = 120 mins 
140 mins -120 mins= 20 mins
2 hrs ans 20 mins is the answer
7 0
3 years ago
Read 2 more answers
Find dy/dx of y = sin inverse ( x - 1 ).
jolli1 [7]

\frac{1}{ \sqrt{1 -  {(x - 1)}^{2} } }

8 0
2 years ago
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