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antoniya [11.8K]
3 years ago
6

1.15x10^-7 / 2.5x10^-3 4.6x10^-10 0.46x10^-3 4.6x10^-3 0.46x10^-4

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

Answer:

The answer to your question is: d) 0.46x10^-4

Step-by-step explanation:

                                        (1.15x10⁻⁷) / (2.5x10⁻³)

First, divide 1.15 by 2.5        1.15 / 2.5 = 0.46

Second, subtract the power    -7 - (-3) = -7 + 3 = -4

Finally, express the number     0.46 x 10⁻⁴

a) 4.6x10^-10

b) 0.46x10^-3

c) 4.6x10^-3

d) 0.46x10^-4

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The pie chart shows information about voters in an election. 2800 more women vote than men. Work out the total number of voters.
Dmitry [639]
The picture in the attached figure

let
x--------> men voters
y-------> women voters

we know that
y=x+2800------> y-x=2800------> equation 1

step 1
find the percentage of women and men voters
in the graph
central angle by men voters=130°
central angle by women voters=(360°-130°)-------> 230°
by using proportion
men voters
\frac{360}{100} = \frac{130}{M}  \\ M=(100*130)/360 \\ M=36.11%

women voters
\frac{360}{100} = \frac{230}{F} \\ F=(100*230)/360 \\ F=63.89%

remember equation 1
y-x=2800
so
F-M=63.89%-36.11%----> 27.78%

if 27.78% correspond to 2800 voters
100%---------------------->T
T=100*2800/27.78-------> T=10,079.19 voters

the answer is
about 10,079 voters

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4 years ago
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Answer:

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Step-by-step explanation:

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7 0
3 years ago
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Answer:

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Step-by-step explanation:

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