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katrin [286]
3 years ago
6

Simplify the expression: 2(5 + 7c) need help ​

Mathematics
2 answers:
noname [10]3 years ago
6 0

Answer:

10+14c

Step-by-step explanation:

You multiply every number inside the parenthesis by 2.

frosja888 [35]3 years ago
5 0

Answer:

10+14c

Step-by-step explanation:

Multiply two times what is in parentheses.

10+14c

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Habib wants to cover a kitchen wall in ceramic tile. The wall is 42 feet by 10 feet.
Slav-nsk [51]

Answer: Side of largest square tile will be 105 feet.

Explanation:

Since we have given that

dimensions of the wall is 42 feet by 10 feet

So,

Length of wall = 42 feet

Breadth of wall = 10 feet

First we calculate the H.C.F. of 42 and 10,

which is 2 only.

The largest square tile side would be 2 feet.

Now, we find the number of tiles used,

Number of tiles =

\frac{\text{Area of wall}}{\text{H.C.F. of }42\text{ and }11\times\text{ H.C.F. of }42\text{ and } 11}}\\\\=\frac{42\times 10}{2\times 2}\\\\=\frac{420}{4}\\\\=105

We get integer value of number of tiles.

Therefore, Side of largest square tile will be 2 feet.

7 0
3 years ago
Question: which of the following is equal to -7?
evablogger [386]

Answer:

-2-5

Step-by-step explanation:

-2-5   = -7

2-5  -3

-5+2 = -3

5+(-2) = -3

7 0
3 years ago
Read 2 more answers
Solve this someone (1−4m)(m 2 −3m+8)
UNO [17]
The Answer should be 4m^2-33m+8
Hope this was helpful
8 0
3 years ago
What is the solution for the inequality x-40>20​
Alenkasestr [34]

Answer:

x= 60

Step-by-step explanation:

8 0
3 years ago
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For every girl taking classes at the martial arts school, there are 3 boys who are taking classes at the school. if there are 23
just olya [345]
G = number of girls taking the martial arts classes
and
B = number of boys taking the martial arts classes

We know that for every girl, there are 3 boys.  Therefore, the proportion of girls to boys is:
\frac{G}{B} = \frac{1}{3}

When you simplify this ratio by cross-multiplying you get: 
3G = B
When you think about this, it makes sense because you know that there are 3 times as many boys as there are girls.  Therefore you would need to multiply the number of girls by 3 to equal the number of boys in the class.

We know that there are 236 total people in the class, Therefore we know that:
G + B = 236

You can replace the B in the equation above with your simplified ratio to solve, since both contain the variable B:

G + B = 236
is the same as
G + 3G = 236 ->
4G = 236 ->
G = 59

So there are 59 girls in the class, but you need to figure out the number of boys, not girls.  Therefore, subtract 59 from 236 to get to the final answer:

G + B = 236
59 + B = 236
59 + B - 59 = 236 - 59
B = 177

6 0
3 years ago
Read 2 more answers
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