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Anuta_ua [19.1K]
3 years ago
15

The sum of five times a number and 6 is 21. What is the number?

Mathematics
2 answers:
Nataliya [291]3 years ago
6 0

Answer: it’s 3

Step-by-step explanation:

steposvetlana [31]3 years ago
6 0
5x + 6 = 21
-6 -6
-------------------
5x = 21
(divide 5 on both sides to get rid of the number to get the variable by itself on both sides which makes X = 4.2
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Solve 2x = 3.<br> Round to the nearest ten-thousandth.
levacccp [35]

divide by 2 on both sides.

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3 years ago
Read 2 more answers
Can someone please help me
Readme [11.4K]
Surface Area of the figure is 1208 square centimeters
a=20
b=13
c=12
d=5
e=8
Top face:
A1=a×e=20×8
ae=160
Bottom face:
A2(a+2d)×e=(20+2×5)×8=(20+10)×8=30×8
(a+2d)e=240
Front face:
Rectangle
a×c=20×12=240
Triangle:
12c×d=12×12×5=6×5=30
A3Rectangle +2 triangles
240+2×30=240+60=300
(a+d)c=300
Slant face:
A4=b×e=13×8=104
be=104
Total surface area
A=A1+A2+2(A3+A4)
A1=160
A2=240
A3=300
A4=104
Thus,
A=160+240+2(300+104)
A=400+2(404)
A=400+808=1208
Surface Area of the figure is 1208 square centimeters


8 0
3 years ago
Answer A and B. I will give a brainliest to the best answer.
maksim [4K]

Answer:

a) 70 degrees

b) 110 degrees

Step-by-step explanation:

Freezing point of water is 32 degrees.

Boiling point of water is 212 degrees.

Hope this helped :)

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yes, I'm pretty shure they do

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