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r-ruslan [8.4K]
3 years ago
14

The difference between three times a number and seven is twenty. What is the number?

Mathematics
1 answer:
Mama L [17]3 years ago
6 0

Answer:

9

Step-by-step explanation:

(9*3) = 27 which is 20 more than 7

You might be interested in
Are 5p+5c and 5(p+c) equivalent
Flura [38]
Yes they are equivilent because of the distributive property
which is
a(b+c)=ab+ac
or in this case
5(p+c)=5p+5c
if you don't believe it *cough* *cough* *Brainiac01* *cough* *cough*
then subsitute values
lets sayp=4 and c=3
5(4)+5(3)=5(4+3)
20+15=5(7)
35=35
tada


so the answer is yes
6 0
3 years ago
Evaluate.<br> (-5)3 = <br> this is needed fast pls
alexira [117]

Answer:

The answer is -15

Step-by-step explanation:

(-5)3 is the same as -5 × 3

5 0
3 years ago
Read 2 more answers
Please help now ^.^
victus00 [196]
2 tons is the most reasonable answer
5 0
4 years ago
Please help me because I don't understand how to do it.:)
nadezda [96]

Answer:

231.7  cm^2

Step-by-step explanation:

We can find the area  by adding the area of the rectangle to the area of the 2 triangles.

The rectangle is

7+7+7 by 9

21 by 9

A = length * width

A = 21*9

A = 189

The triangles are identical so we find the area of one of them and multiply by 2

The base is 7 and the height is 6.1

A = 1/2 b*h

but since we have 2 of them

2A = 2*1/2 b*h

2A = b*h

2A = (7* 6.1)

     = 42.7


Add the rectangles area to the area of the two triangles

189 + 42.7

231.7  cm^2

6 0
3 years ago
A line with a slope of 4 passes through the point 2,1.What is the equation of the line?
True [87]
Y= mx+b
m= the slope and b=the y intercept
so if you plus in the info you have it would be
y=4x+1
5 0
3 years ago
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