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marshall27 [118]
3 years ago
9

.872 to scientific notation

Mathematics
1 answer:
Crazy boy [7]3 years ago
3 0

Answer:

8.72×10²

Step-by-step explanation:

  1. 8.72×10²=872
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at a country concert,the ratio of number of the Boys to the number of girls is 2:7 if there are 250 more girls than boys how man
sergey [27]

Answer:

100

Step-by-step explanation:

Ratio is a fraction, so ratio of boys to girls would be written as [let boys be "b" and girls be "g"]:

\frac{b}{g}=\frac{2}{7}

Also, there are 250 more girls than boys, so we can write:

g = 250 + b

Lets substitute this into "g" of the ratio we wrote and cross mulitply and solve for b:

\frac{b}{g}=\frac{2}{7}\\\frac{b}{250+b}=\frac{2}{7}\\7b=2(250+b)\\7b=500+2b\\5b=500\\b=\frac{500}{5}=100

The number of boys = 100

3 0
3 years ago
Which statement best describes a chord of a circle
Butoxors [25]
It is a segment that connects two distinct points on a cicrcle.

5 0
3 years ago
How do u solve the following equation: |r|=1
vredina [299]
You're almost looking at the solution.  Almost.

If it only said  "  r = 1 ", then that would be the solution right there.

But it says "  | r | = 1 ", so there's a little more to it.

'r' can be either  +1  or  -1  and that equation will be a true statement.

So  +1  and  -1  are both solutions.
7 0
3 years ago
Using long division to show the fraction and decimal in each pair are equal 3/4 and 0.75
SVETLANKA909090 [29]

Answer:

How to show that they are equal.

Step-by-step explanation:

3/4 times 25 equals 75/100 and then when you turn it into a decimal it is 0.75. That is why they are equal.

4 0
3 years ago
Use the net to find the surface area of the rectangular prism.
Komok [63]

Answer:

220

Step-by-step explanation:

The surface area is  given by

SA = 2 ( lw+wh+lh)  where  l is length h is height and w is width

SA = 2(3*4 + 3*14+ 4*14)

     = 2(12+42+56)

    = 2(110)

    = 220

3 0
3 years ago
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