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grigory [225]
3 years ago
7

there were 20 girls and 10 boys on the swim team last summer this summer this number of girls decreased by 30% and the number of

voice increased by 40% how many members are on the swim team this summer​
Mathematics
2 answers:
kari74 [83]3 years ago
8 0

Answer:

28

Step-by-step explanation:

Hitman42 [59]3 years ago
6 0

Answer:

28

Step-by-step explanation:

I am assuming that "voice" is boys. So there were 20 girls and 10 boys. The number of girls decreased by 30%, so the amount of girls now is 70% of the old amount, so there are 7/10 * 20 girls now = 14 girls. The number of boys increased by 40%, so the number of boys now is 14/10 the original number of boys, so there are 14 boys now. 14+14=28 members on the swimming team

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Answer & Step-by-step explanation:

I can't draw the image, but I can explain it to you.

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3 years ago
Subtract 7 pounds 3 ounces from 10 pounds
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2 years ago
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rewona [7]

Answer:

Step-by-step explanation:

From the given information:

The domain D of integration in polar coordinates can be represented by:

D = {(r,θ)| 0 ≤ r ≤ 6, 0 ≤ θ ≤ 2π) &;

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y =\dfrac{\partial z}{\partial x} , x = \dfrac{\partial z}{\partial y}

Thus, the area of the surface is as follows:

\iint_D \sqrt{(\dfrac{\partial z}{\partial x})^2+ (\dfrac{\partial z}{\partial y})^2 +1 }\ dA = \iint_D \sqrt{(y)^2+(x)^2+1 } \ dA

= \iint_D \sqrt{x^2 +y^2 +1 } \ dA

= \int^{2 \pi}_{0} \int^{6}_{0} \ r  \sqrt{r^2 +1 } \ dr \ d \theta

=2 \pi \int^{6}_{0} \ r  \sqrt{r^2 +1 } \ dr

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Of these, the last is least likely to be true in the United States.

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Based on the assumptions above, we compute the amount from the future value of the series of contributions, then subtract 15% from that result.

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