3 years ago

PLEASE HELP QUICK!!!!! WILL GIVE BRAINIEST!!!!!! Please don’t answer if you don’t know it.

Mathematics

1 answer:

kkurt [141]3 years ago

6 0

Answer:

When I solved it I got (A)

Step-by-step explanation:

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Katie is twice as old as her sister Mara. The sum of their ages is 24. Find their ages.

Alenkasestr [34]

So k=katie's' age
m=mara's age

k is 2 times as old as m
k=2m

sum is 24
add means sum
k+m=24

so we have
k+m=24 and
k=2m
subsitute
2m+m=24
add
3m=24
divide both sides by 3
m=8
subsitute again
k=2m
k=2(8)
k=16

katie=16
mara=8

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2 of the dozen eggs in a cartoon are cracked about what percent of the carton is not cracked

pychu [463]

well, a carton has a dozen, namely 12 or the 100%, two were cracked.

if we know 12 is the 100%, what is 2 off of it in percentage?

$\bf \begin{array}{ccll}
amount&\%\\
\cline{1-2}
12&100\\
2&x
\end{array}\implies \cfrac{12}{2}=\cfrac{100}{x}\implies x=\cfrac{2\cdot 100}{12}\implies x=16.\overline{66}$

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What would the answer be ?

weeeeeb [17]

154
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What is 0.000000783 written in scientific notation?

fredd [130]

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An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the ref

VLD [36.1K]

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.

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