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Nata [24]
3 years ago
12

Could someone please help me?

Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0
The answer is 12n-20
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How to solve this question
Viefleur [7K]

Answer:

7x+21 = 7x + 21

Step-by-step explanation:

7(x+3)=6-(-7x - 15)

L.H.S

=7(x+3)

=7x+21 (multiply 7 by (x+3))

R.H.S:

=6-(-7x - 15)

= 6+7x+15 (multiply the -ive sign in the bracket)

= 7x + 21 ( adding 15 and 6)

now compare the two sides

7x+21 = 7x + 21 hence we prove that L.H.S= R.H.S

4 0
3 years ago
How many digits are there in the smallest sequence of repeating digits in the decimal equivalent of 5/9
mestny [16]

Answer:

1

Step-by-step explanation:

5/9 = 0.5555555

The smallest sequence of repeating digits in the decimal equivalent of 5/9

0.5

0.5 + 0.05

0.5 + 0.05 + 0.005

0.5 + 0.05 + 0.005 + 0.0005

Hence, the number of digit in the smallest sequence of repeating decimal is 1

5/9 = 0.5....

8 0
3 years ago
Which fraction is equivalent to negative 7 over 8 ? (1 point)
Alja [10]
The answer is -7/8\= 7/-8 Thank you!
6 0
3 years ago
Read 2 more answers
A 5.ft tall man casts a shadow along the ground that is 8 ft. long. At the same time a giraffe casts a shadow that is 12 ft. lon
forsale [732]

Answer :  7.5 ft

Step-by-step explanation:

when the length of the shadow is 8ft, the actual height of the man = 5ft

8:5

let the giraffe be 'x' ft tall.

if the length of the shadow is 12ft, actual height = x ft

12:x

8:5 x 12:x

\frac{8}{5} × \frac{12}{x}

x= \frac{15}{2}

x=7.5 ft

Therefore, the giraffe is 7.5ft tall.

4 0
1 year ago
Read 2 more answers
Please answer ASAP: All of the following are equivalent except _____.
ahrayia [7]
7x 2. All the other answers equal 7x. The first one would be 49x. I hope this helps love! :)
8 0
2 years ago
Read 2 more answers
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