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kakasveta [241]
3 years ago
6

PLEASE HELP! Solve the open sentence. 8 < 2b or 2b + 15 < 5

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
6 0
The answer: b><span><span><span>4<span> or </span></span>b</span><<span>−<span>5</span></span></span>
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For a recent year, 38 more Democrats than Republicans represented a country. If the total number of representatives of the count
Fantom [35]

Second question isn't well formatted

Answer:

Number of republicans = 207

Number of democrats = 245

Step-by-step explanation:

Let :

Number of republicans = x

Number of democrats = x + 38

Total number of representatives from the two parties = 452

Tge number of representatives from each party can be calculated thus ;

Number of democrats + number of republicans = total number of representatives

(x + 38) + x = 452

x + 38 + x = 452

2x = 452 - 38

2x = 414

x = 414 / 2

x = 207

Number of republicans = 207

Number of democrats = 207 + 38 = 245

3 0
3 years ago
A support cable connects the top of a bridge tower to the road at a point 200.7 feet away from the center of the bridge tower
andrey2020 [161]
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4 0
3 years ago
What’s the area<br> A. 64<br> B. 44<br> C. 30.25<br> D. 13.75
dalvyx [7]

Answer:

B) 44

Step-by-step explanation:

Let's start with the triangles. Normally, when dealing with triangles, you would use the formula (B*H*1/2), but since there's two identical triangles, we can just do (B*H) and get the area for both:

2.5*5.5=<u>13.75</u>

Then to solve for the square, it is also (B*H):

5.5*5.5=<u>30.25</u>

At this point, to solve for the total area, you just add the areas together:

13.75+30.25=<u>44</u>

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Hope this helps!

6 0
2 years ago
Read 2 more answers
Help please!!!!!!!! what is the answer
Anon25 [30]

Answer:

About 20 inches or A

Please give Brain

and hope this helped :D

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
A genetic experiment involving peas yielded one sample of offspring consisting of 409 green peas and 171 yellow peas. Use a 0.05
grigory [225]
The usual expectation for this kind of experiment is that the peas would yield green and yellow peas in a 3:1 ratio, or 75% green to 25% yellow. So your null hypothesis is that the proportion of yellow peas is p=0.25.

You're testing the claim that 26% of the offspring will be yellow, which means the alternative hypothesis is that the proportion of yellow peas is actually 0.26, or more generally that the expected proportion is greater than 0.25, or p>0.25.

The test statistic in this case will be

Z=\dfrac{\hat p-p_0}{\sqrt{\dfrac{p_0(1-p_0)}n}}

where p_0 is the proportion assumed under the null hypothesis, \hat p is the measured proportion, and n is the sample size. You have p_0=0.25, \hat p=\dfrac{171}{171+409}\approx0.29, and n=409+171=580, so the test statistic is

Z=\dfrac{0.29-0.25}{\sqrt{\dfrac{0.25\times0.75}{580}}}\approx2.2247

Because you're testing p>p_0, this is a right-tailed test, so the P-value is

\mathbb P(Z>2.2247)\approx0.0131

The critical value for a right-tail test at a 0.05 significance level is Z_\alpha\approx1.6449, which means the rejection region is any test statistic that is larger than this critical value. Since Z>Z_\alpha in this case, we reject the null hypothesis.

So the conclusion for this test is that the sample proportion is indeed statistically significantly different from the proportion suggested by the null hypothesis.
8 0
3 years ago
Read 2 more answers
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