Mathematics: 1. simplify the expression 3(21m+27) a) 63m+81 b)63m+27 c)24m+30 d)21m+81 if someone can me with this other one it could too! 2. what is the product? 7 x (-3) a)21 b)-21 c)4 d)10

1. simplify the expression 3(21m+27) a) 63m+81 b)63m+27 - id1321276381631237979, skatingflower

Ответ:

faithrawlins14

28.05.2020

Mathematics

1 is A. You need to distribute the external values to everything in the parentheses.

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Ответ:

kvivas54

28.05.2020

Mathematics

1. 3(21 + 27)
3 x 21 = 63 3 x 27 = 81
so
it together is
63 + 81 is the answer

2. 7 x (-3)
parenthesis means its not negative unless the negative symbol isnt on the outside
so the answer is
21

Hope this helps,
xXharleyquinn04Xx

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Ответ:

jasonoliva13

12.01.2022

Mathematics

t = 0.85 s

Step-by-step explanation:

Given that,

The speed of a car, v = 40 mph = 17.8816 m/s

Distance, d = 50 feet = 15.24 m

Let the time be t. The formula for speed is given by distance divided by time. So,

$v=\dfrac{d}{t}\\\\t=\dfrac{d}{v}\\\\t=\dfrac{15.24 }{17.8816 }\\\\t=0.85\ s$

So, the required time is 0.85 s.

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1. simplify the expression 3(21m+27) a) 63m+81 b)63m+27 c)24m+30 d)21m+81 if someone can me with this other one it could too! 2. what is the product? 7 x (-3) a)21 b)-21 c)4 d)10

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