3 years ago

Reward:15 points:brainiest answer

1 answer:

8 0

I'm pretty sure you can find it by dividing the ratios

9/12 = 0.75

10/15 = 0.67

So Emilie's team had a higher ratio of wins to losses

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Convert 715% to a decimal number

Aleksandr [31]

715%=7 3/20=7.15
:)
:)
:)

4 0

3 years ago

Read 2 more answers

There are 169 million registered voters in the us. determine an interval for the number (how many) of registered democrats in th

VashaNatasha [74]

Part A:

Given that in a sample of 400 registered voters, 204 were democrats, i.e. n = 400, <span> $\hat{p}= \frac{204}{400} =0.51$

</span>The 95% confidence interval for the proportion of registered democrats voters in the population is given by:

$95\%\ C.I.=\hat{p}\pm z_{\alpha/2}\sqrt{\frac{\hat{p}(1-\hat{p})}{n}} \\ \\ =0.51\pm1.96\sqrt{\frac{0.51(1-0.51)}{400}}=0.51\pm1.96\sqrt{\frac{0.2499}{400}} \\ \\ =0.51\pm1.96(0.025)=0.51\pm0.049=(0.51-0.049,\ 0.51+0.049) \\ \\ =\bold{(0.461,\ 0.559)}$

Part B:

Given that t<span>here are 169 million registered voters in the US, the interval for the number of registered democrats in the population is given by

[0.461(169,000,000), 0.559(169,000,000)] = (77,909,000, 94,471,000)
</span>

6 0

3 years ago

Shaded area is 54 pi cm squared. Find X

EleoNora [17]

Answer:

x = 3π/4 radians = 135°

Step-by-step explanation:

The area of a sector of central angle α is ...

A = (1/2)r²α

Filling in the given values, we can find the central angle to be ...

54π cm² = (1/2)(12 cm)²x

x = (54π)/(72) = 3/4π . . . . radians