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cestrela7 [59]
3 years ago
5

X * 5 * 25 * 4 ÷ 5, if x = 813 simplified form please

Mathematics
1 answer:
tresset_1 [31]3 years ago
6 0

Answer:

81,300

Step-by-step explanation:

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Evaluate.
ohaa [14]

Step-by-step explanation:

\frac{9.2 \times  {10}^{ - 8} }{2.3 \times  {10}^{3} }  \\  = 4.0 \times  {10}^{ - 11}

8 0
3 years ago
Russell runs 9/10 mile in 5 minutes. At this rate, how many miles can he run in one minute?
miss Akunina [59]
9/50 is the answer I think!

I converted 9/10 to decimal to make it easier for me to solve and got 0.9

I divided 0.9 by 5 and got 0.18

I converted 0.18 to fraction and got 9/50
7 0
3 years ago
The ratio of boys to girls in math classes is 3.5. If there are 130 girls in these classes, how many boys must there be?
dsp73

Answer:

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>

The ratio of boys and girls =3:5

Let

Number of boys=3x

Number of girls =5x

  • According to the question Numbers of girls=130

{:}\longrightarrow\sf 5x=130

  • Now interchange both sides and get x

{:}\longrightarrow\sf x={\dfrac {130}{5}}

{:}\longrightarrow\sf x=26

<h3>Now </h3>

The number of boys=3x

=3×26=78

\thereforeNumber of boys is 78.

4 0
2 years ago
The following formula gives the circumference C of a circle with radius r.
Veronika [31]

Answer:

The answer is 125.6

Step-by-step explanation:

C= 2x3.14x20

C=6.28x 20

C= 125.6

8 0
2 years ago
3x+4=7-2x <br> Solve this equation for x with steps
ollegr [7]
Simplifying
3x + 4 = 7 + -2x

Reorder the terms:
4 + 3x = 7 + -2x

Solving
4 + 3x = 7 + -2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2x' to each side of the equation.
4 + 3x + 2x = 7 + -2x + 2x

Combine like terms: 3x + 2x = 5x
4 + 5x = 7 + -2x + 2x

Combine like terms: -2x + 2x = 0
4 + 5x = 7 + 0
4 + 5x = 7

Add '-4' to each side of the equation.
4 + -4 + 5x = 7 + -4

Combine like terms: 4 + -4 = 0
0 + 5x = 7 + -4
5x = 7 + -4

Combine like terms: 7 + -4 = 3
5x = 3

Divide each side by '5'.
x = 0.6

Answer: x = 0.6
5 0
2 years ago
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