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White raven [17]
3 years ago
15

The sum of three times a number and 12 is twenty

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0
So,

"The sum of three times a number"
3n +

"and 12"
3n + 12

"is 20"
3n + 12 = 20

Subtract 12 from both sides.
3n = 8

Divide both sides by 3.
n =  \frac{8}{3} \ or\ 2 \frac{2}{3}
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3 years ago
From the diagram below, if side DF is 4 cm., side CB would be ______.
kondaur [170]

The measure of CB from the given figure is 8cm

<h3>What is a triangle?</h3>

A triangle is 2 dimensional shape with 3 sides and angles. The types of triangle that we have are;

  • Equilateral triangle
  • Scalene triangle
  • Isosceles

The given triangle is a scalene triangle since <u>none of the sides are equal</u>

From the figure shown, we can see that the mea<em>sure of DF is equivalent to  CE and EB</em>

Since CB = CE + EB

Given the following parameter

DF = 4cm

CE = EB = DF = 4cm

Substitute

CB = 4cm + 4cm

CB = 8cm

Hence the measure of CB from the given figure is 8cm

Learn more on triangles here; brainly.com/question/25215131

#SPJ1

5 0
1 year ago
Carter answered 5% of the questions
Ipatiy [6.2K]

Answer:19/20

1-20=19

1÷20=0.05

0.05=5%

I hope this is good enough:

4 0
3 years ago
Sidaanth kept a chart of his savings .which point represents this relationship?​
photoshop1234 [79]

Answer:

Point A represents savings of week 4 and Point B represents savings of week 2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
V/7= 22 what does v=
Whitepunk [10]
<span>V/7= 22
Multiply 7 on both sides
Final Answer: V = 154</span>
8 0
3 years ago
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