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3 years ago

Find the sum. 13(9−6m)+14(12m−8) =

Mathematics

1 answer:

allochka39001 [22]3 years ago

7 0

Answer:

5+90m

Step-by-step explanation:

117 - 78m + 168m - 112

117- 112 = 5

-78m + 168m= 90m

5+90m

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Line a and Line b are parallel.

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3 years ago

Show me how to solve 172 times 6

stepan [7]

I would recommend starting by turning 172 into 100+70+2. This makes it much easier to multiply it by 6.

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(100×6) + (70×6) + (2×6) =

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3 years ago

Lisa is 6 centimeters taller than her friend Ian. Ian is 10 centimeters taller than Jim. Every month, their heights increase by

Temka [501]

Lan is 146 centimeters tall now.

<u><em>Explanation</em></u>

Let, Lan's current height is $h$ centimeters

As Lisa is 6 centimeters taller than Lan and Lan is 10 centimeters taller than Jim, so Lisa's current height = $(h+6)$ centimeters and Jim's current height = $(h-10)$ centimeters.

Every month, their heights increase by 2 centimeters.

So, after 5 months.....

Lan's height = $h+(2*5)=(h+10)$ centimeters,

Lisa's height = $(h+6)+(2*5)= (h+16)$ centimeters and

Jim's height = $(h-10)+(2*5)= h$ centimeters

Given that, the sum of Ian's and Jim's heights will be 140 centimeters more than Lisa's height in 5 months. So the equation will be....

$(h+10)+h= (h+16)+140\\ \\ 2h+10=h+156\\ \\ 2h-h=156-10\\ \\ h=146$

So, the current height of Lan is 146 centimeters.

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3 years ago

Help help help help help please

iris [78.8K]

Answer:

Step-by-step explanation:

h + 4g

5 + 4(8)

5 + 32 = 37

4 0

3 years ago