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Mandarinka [93]
3 years ago
10

NEED HELP ASAP, WILL AWARD BRAINEST TO CORRECT ANSWER

Mathematics
2 answers:
horrorfan [7]3 years ago
8 0

Question 1 is no doubt B, because Johnny only asked the students in his science class, not the entire school's population. As for question 2, If you could give me a picture of the actual graph, that would be fantastic. Until then, i don't think I can answer Q2 properly.

Fynjy0 [20]3 years ago
5 0

Question 1 is D.<em> </em>

It's not clear that the science class is a good sample of the school as a whole. It may be an elective or for a particular grade, making it a biased sample.

For Question 2 I'll try to create the histogram from your description.

N TOP BOTTOM

9 3 3

10 5 4

11 2 3

If that's accurate the BOTTOM, B, group has longer arms, due to a single person measuring 11 instead of 10.

Neither B or D is really a good answer making me think I transcribed the table incorrectly. I'd guess D

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Omar deposited $4000 into an account with 3.3% interest, compounded semiannually. Assuming that no withdrawals are made, how muc
Anastaziya [24]

Answer:

4711.22

Step-by-step explanation:

A=P(1+\frac{r}{n} )^{nt}\\\\A=4000(1+\frac{0.033}{2}) ^{2*5}\\\\A=4711.22

7 0
3 years ago
Write a function to represent the set of ordered pairs.<br><br> {(2, -2), (3, 8), (4, 22), (5, 40)}
natali 33 [55]

Answer:

y = 2x² - 10

Step-by-step explanation:

We must find a pattern in the numbers. Set out the numbers in a table (Columns 1 and 2 in the table).

<u>x</u>    <u> y</u>    <u>y/2</u>    <u>y/2 + 5 </u>

2   -2      -1           4

3    8       4           9

4  22      11          16

5  40    20         25

It looks like all y-values are multiples of 2.

Let's divide them by 2 (Column 3).

The numbers don't increase evenly. We may have a quadratic function.

If we add 5 to each quotient, we get a set of values equal to x² (Column 4).

y/2 +   5 = x²

y     + 10 = 2x²

y            = 2x² - 10

The function is y = 2x² - 10.

4 0
3 years ago
3. What are the factors of<br> 9x2 - 30x + 25?
vaieri [72.5K]

{(3x)}^{2}-2(3x)(5)+{5}^{2}

−2(3x)(5)+5

2

{(3x-5)}^{2}

4 0
3 years ago
25 POINTS!! HELP ASAP PLEASE!!!
gladu [14]

Answer:

b.

Step-by-step explanation:

Stem is the first digit and the leaf is the last digit.

Below the table is explained that 1 l 7 is 1.7 because it also could mean 17. So with that clear the terms from the Stem l Leaf are as follow:

1 combined with 3, 7 and 7:

1.3, 1.7 and 1.7

2 combined with 6, 8 and 8:

2.6, 2.8, 2.8

3 combined with 5 and 7:

3.5 and 3.7

All the terms:

1.3, 1.7, 1.7, 2.6, 2.8, 2.8, 3.5, 3.7

4 0
3 years ago
Of the 50 students in an undergraduate statistics class, 60% send email and/or text messages during any given lecture. They have
sasho [114]

Answer:

0.3 or 30%

Step-by-step explanation:

Since no innocent student will ever be caught, the probability that a student sends an email and/or text message during a lecture AND gets caught is given by the product of the probability of a student sending a message (60%) by the probability of the professor catching them (50%) :

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The probability is 0.3 or 30%.

7 0
3 years ago
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