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Kaylis [27]
3 years ago
6

Jack Drew 1 heart and 14 circles. What is the ratio of circles to shapes

Mathematics
1 answer:
leonid [27]3 years ago
8 0
14:15 because there’s 14 circles plus one heart (14+1) and it’s circles (14) to shapes(15)
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Evaluate f-+g if f=4 and g=6
Luden [163]
I don't why you put -+ but I will go ahead and assume that it is -2.
4-+6
 I think it is saying 4 - positive 6 but I'm guessing.
3 0
3 years ago
Hillgrove High School plays 3 soccer games. The team loses 2 of those games. According to the tree diagram, how many ways could
Rashid [163]
You could do it 3 ways.
Hope this helps.
7 0
3 years ago
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A random sample of n 1 = 249 people who live in a city were selected and 87 identified as a democrat. a random sample of n 2 = 1
kvasek [131]

Answer:

CI=\{-0.2941,-0.0337\}

Step-by-step explanation:

Assuming conditions are met, the formula for a confidence interval (CI) for the difference between two population proportions is \displaystyle CI=(\hat{p}_1-\hat{p}_2)\pm z^*\sqrt{\frac{\hat{p}_1(1-\hat{p}_1)}{n_1}+\frac{\hat{p}_2(1-\hat{p}_2)}{n_2} where \hat{p}_1 and n_1 are the sample proportion and sample size of the first sample, and \hat{p}_2 and n_2 are the sample proportion and sample size of the second sample.

We see that \hat{p}_1=\frac{87}{249}\approx0.3494 and \hat{p}_2=\frac{58}{113}\approx0.5133. We also know that a 98% confidence level corresponds to a critical value of z^*=2.33, so we can plug these values into the formula to get our desired confidence interval:

\displaystyle CI=(\hat{p}_1-\hat{p}_2)\pm z^*\sqrt{\frac{\hat{p}_1(1-\hat{p}_1)}{n_1}+\frac{\hat{p}_2(1-\hat{p}_2)}{n_2}}\\\\CI=\biggr(\frac{87}{249}-\frac{58}{113}\biggr)\pm 2.33\sqrt{\frac{\frac{87}{249}(1-\frac{87}{249})}{249}+\frac{\frac{58}{113}(1-\frac{58}{113})}{113}}\\\\CI=\{-0.2941,-0.0337\}

Hence, we are 98% confident that the true difference in the proportion of people that live in a city who identify as a democrat and the proportion of people that live in a rural area who identify as a democrat is contained within the interval {-0.2941,-0.0337}

The 98% confidence interval also suggests that it may be more likely that identified democrats in a rural area have a greater proportion than identified democrats in a city since the differences in the interval are less than 0.

5 0
2 years ago
What will you get if you do this <br><br> 4x-3x+9=20
nignag [31]

Answer:

This can be solved like this:

4x-3x+9=20

<em>Solving 4x-3x</em>

x+9=20

Transposing +9

x=20-9

And now we have, x=11

5 0
2 years ago
Read 2 more answers
Solve <br> -16+ 20<br><br> A. -36 <br><br> B.-4<br><br> C. 4 <br><br> D. 36
Alborosie

Answer:

C: 4

Step-by-step explanation:

We can rearrange the numbers:

-16+20=+20-16=20-16=4

8 0
3 years ago
Read 2 more answers
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