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SVETLANKA909090 [29]
3 years ago
9

Write and solve the equation/expression written below:

Mathematics
1 answer:
Tatiana [17]3 years ago
5 0

Step-by-step explanation:

Three times the sum of a number and 4 is the same as 18 less than a number.

Solution,

Let the number be x, then

3(x+4)=x-18

3x+12=x-18

3x-x=-18-12

2x=-30

x=-30/2

x=-15

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18

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The pentagonal prism has a perpendicular distance of 14 units between the bases. The volume of the prism is 840 cubic units. Wha
nadezda [96]
<span>Prism Volume = Area of Base • Height
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4 0
3 years ago
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15 - 8 = 4 x 7 What operation would you do first in this expression? 4x7 15-8 8:4​
Afina-wow [57]

Answer:

Multiply first. PEMDAS - Parenthesis, Exponents, Multiplication, Divison, Addition, Subtraction.

Step-by-step explanation:

15 - 8 = 4 x 7

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