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2 years ago

What is the circumference of a circle that has a radius of 10 in? Use 3.14 for π

Mathematics

1 answer:

nadya68 [22]2 years ago

5 0

Answer:

circumference=πD

R=10

D=20

3.14*20

=68.2

Step-by-step explanation:

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0.00045−2.5⋅10 −5 = what is the answer i been up all day

Mama L [17]

If I’m getting this right the equation is: 0.00045 - 2.5 x 10 - 5? The dot in between 2.5 and 10 indicates a multiplication sign

So...

0.00045 - (2.5 x 10) - 5
0.00045 - 25 - 5
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2 years ago

What is 7 x 10^22 in its expanded form?

sammy [17]

Answer:

70,000,000,000,000,000,000,000

Step-by-step explanation:

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3 years ago

A block of gold has a mass of 9,660 kilograms has a volume of 0.5 cubic meters. What is the density of gold

Brums [2.3K]

9660 divided by 0.5 = 19,320

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2 years ago

A dance school has 63 ballet dancers a 42% of the total number of dancers in the score ballet dancers what is the total number o

melamori03 [73]

42% of what is 63

0.42x = 63
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There are 150 dancers in the school

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3 years ago

Select the correct answer.

adelina 88 [10]

Answer:

$\frac{5}{4} x - 2 = \frac{3}{2} x-4$

Step-by-step explanation:

$\frac{5}{2} x +\frac{7}{2} =\frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14-\frac{7}{2} \\\frac{10-3}{4} x =\frac{28-7}{2} \\\frac{7}{4} x =\frac{21}{2} \\x = \frac{21}{2} * \frac{4}{7} = 6 \\$

$\frac{5}{4} x -9 = \frac{3}{2} x-12 \\\frac{5}{4} x - \frac{3}{2} x= -12 + 9 \\\frac{5-6}{4} x = -3 \\\frac{-1}{4} x = -3 \\x = -3 * -4 \\x = 12$

$\frac{5}{4} x-2=\frac{3}{2} x-4 \\\frac{5}{4} x-\frac{3}{2} x=-4+2 \\\frac{5-6}{4}x=-2 \\\frac{-1}{4} x = -2 \\x = -2 * -4 \\x = 8$

$\frac{5}{2} x -7 = \frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14+7 \\\frac{10-3}{4} x =21 \\\frac{7}{4} x =21 \\x = 21 * \frac{4}{7} = 12 \\$

You could also replace x for 8 in every equation and see if both sides give the same answer

8 0

3 years ago