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romanna [79]
3 years ago
11

What is x in the equation28=8+5x?

Mathematics
1 answer:
mote1985 [20]3 years ago
5 0

Answer:


Step-by-step explanation:

28=8+5x

20=5x

=4

four is your answer

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A cone has a volume of 1,256 cubic centimeters. If the height of the cone is 12 centimeters, what is the radius of the base in c
luda_lava [24]

Answer:

The radius 10 cm

Step-by-step explanation:

∵ The volume of the cone = 1/3 πr²h

∵ v = 1256 cm³

∵ h = 12 cm

∴ 1256 = 1/3 π (12) r²

∴ r² = 1256 × 3/12π = 100 cm

∴ r = √100 = 10 cm

5 0
2 years ago
The sum of two numbers is 21 and their difference is 7 what are those two numbers
True [87]
If you need the sum than here is an equation for it 7x3= 21
6 0
3 years ago
Read 2 more answers
*** Anyone who answers randomly for points WILL be reported ***
xeze [42]

One example is the equation 2x+3x = 5x because the left hand side combines to form the right hand side. This equation is said to be an identity, which is always true for any real number you can think of. For example, if x = 3, then,

2x+3x = 5x

2*3+3*3 = 5*3 ... replace every x with 3

6 + 9 = 15

15 = 15

We end up with a true equation. This will happen regardless of what x value we pick. Therefore, it has infinitely many solutions.

4 0
2 years ago
a rectangular lawn of sides 400m and 300m is surrounded by a path of width 3 m . find the area of path
DiKsa [7]

Answer:

2109 meter squared

Step-by-step explanation:

Area  \: of \:  path  \\ = (400+3)(300+3)-400 \times 300 \\  = 403 \times 303 - 120000 \\  = 122,109 - 120000 \\  = 2109 \:  {m}^{2}

8 0
3 years ago
Please <br> Solve for the value of k.
alukav5142 [94]

Answer:

k = 13

Step-by-step explanation:

The sum of the angles is 180 since they form a straight line

4k-7 + 90 + 3k+6 = 180

Combine like terms

7k+89=180

Subtract 89 from each side

7k+89-89 = 180-89

7k =91

Divide each side by 7

7k/7 = 91/7

k = 13

8 0
3 years ago
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