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den301095 [7]
3 years ago
9

Quadratic equations can always be factored. True False

Mathematics
1 answer:
Ahat [919]3 years ago
6 0
<span>Hey! :)

False, Quadratic can sometimes be solved by factoring. It can ALWAYS be solved using the quadratic formula.

Hope this helps! :)</span>
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In a Gallup poll, 1025 randomly selected adults were surveyed and 29% of them said that they used the Internet for shopping at l
svetoff [14.1K]

Answer:   (0.25,0.33)

Step-by-step explanation:

A 99% confidence interval for population proportion is given by:-

\hat{p}\pm 2.576\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}, where \hat{p} = sample proportion, n = sample size.

Given: n=1025, \hat{p}=0.29

A 99% confidence interval estimate of the proportion of adults who use the Internet for shopping:

0.29\pm 2.576\sqrt{\dfrac{0.29(1-0.29)}{1025}}\\\\=0.29\pm 2.576\sqrt{0.00020087804878}\\\\=0.29\pm2.576(0.01417)\\\\=0.29\pm0.03650192\\\\=(0.29-0.03650192,\ 0.29+0.03650192)\\\\=(0.25349808,\ 0.32650192)

\approx(0.25,\ 0.33)

Thus, a 99% confidence interval estimate of the proportion of adults who use the Internet for shopping = (0.25,0.33)

5 0
3 years ago
Write the number shown on the calculator display in standard form.
frez [133]

Answer:

2 Because visual specialization skills are important to success in so many career

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Step-by-step explanation:

2 Because visual specialization skills are important to success in so many career

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3 0
3 years ago
In a certain class, the ratio of girls to boys was 5 to 4. If there are 80 boys in the class, how many students are there in all
andriy [413]

there are 180 students in the entire class


5 0
3 years ago
Read 2 more answers
Answer to 42.7 -(-12.4)
Aleks [24]
<span>42.7−<span>(<span>−12.4</span>)

</span></span><span>=<span>42.7−<span>(<span>−12.4</span>)

</span></span></span><span>=<span>42.7+12.4

</span></span><span>=<span>55.1</span></span>
4 0
3 years ago
Find the value of 21 + 4(32 - 5).<br><br> 37<br> 25<br> 100
bija089 [108]
21+4(32-5)=448


I think it’s 448
4 0
2 years ago
Read 2 more answers
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