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Law Incorporation [45]
3 years ago
15

2 times the sum of a number and 5 is 20

Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
8 0

The number is 5. Steps shown below

pishuonlain [190]3 years ago
6 0

2(x+5)=20\\ \\ 2x+10=20\\ \\ 2x=20-10\\ \\ 2x=10\\ \\ x=5

Confirming the other answer. 5 is correct.

Hope this helps!

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Help me plss plss I really need help I have a f
Colt1911 [192]

Answer:

A. 5 1/2 and D. 11/2

Step-by-step explanation:

Make improper fraction

8*1+3=11/8

Solve by multiplying:

4*11/8

44/8

Simplified is 11/2

We can turn it back into a mixed number

2*5+1=11 so 5 1/2

6 0
3 years ago
Convert 1/15 into a decimal correct to 2 decimal places ​
Citrus2011 [14]

Answer:

\frac{1}{15} = 0.\overline{66}

Step-by-step explanation:

We proceed to show the procedure to calculate the given fraction into a decimal form:

1) Since numerator is less than denominator, the integer component of the decimal number is zero:

\frac{1}{15} = 0.xx

2) We multiply the numerator by 10 and find the tenth digit:

\frac{10}{15} = 0

Then,

\frac{1}{15} = 0.0xx

3) We multiply the fraction in 2) by 10 and find the hundredth digit:

\frac{100}{15} = 6

Then,

\frac{1}{15} = 0.66x

And the remainder is:

r = 100-15\times 6

r = 10

4) We multiply the remainder by 10 and divide this result by the denominator to determine the thousandth digit:

\frac{100}{15} = 6

Then,

\frac{1}{15} = 0.666

This question asks us to write a decimal correct to 2 decimal places, which has the characteristic that is infinite periodical decimal. Then, the result correct to 2 decimal places is:

\frac{1}{15} = 0.\overline{66}

3 0
2 years ago
Please help me with this
ElenaW [278]

Answer:

Equation: (3+x) +x= 49

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7 0
3 years ago
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I Can't See The Problem All The Way
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In ΔQRS, the measure of ∠S=90°, QR = 8.2 feet, and SQ = 4.2 feet. Find the measure of ∠R to the nearest degree.
qwelly [4]

Answer:

R=30.81≈31  

Step-by-step explanation:

6 0
3 years ago
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