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Schach [20]
3 years ago
14

suppose the probability you will get an A in this class is .25 and the probability you will get a B is .50. What is the probabil

ity your grade will be above a C?
Mathematics
1 answer:
Ludmilka [50]3 years ago
3 0

Answer:

75% chance

Step-by-step explanation:

Probability always adds to 1.00

Letter grades are always in the form A, B, C, D...

The grades above a C are A, which is a 25% chance and B, which has a 50% chance. Adding these up we get a 75% chance.

#LearnWithBrainly

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d1i1m1o1n [39]

1. 60 / 1/8 * 3/4

2. 3/4 * 15

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3 0
4 years ago
The following stem-and-leaf plot represents the scores earned by Mr. Roberts's class on their most recent science test.
Alinara [238K]
First we need to count the total number scores. This can be done from the stem and leaf plot. The total number of scores are 19. The total number of values is odd, so the median position will be:

\frac{19+1}{2}=10th

Thus the 10th score is the median score for the class of Mr. Robert. The 10th score from the stem and leaf plot is 81.

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5 0
4 years ago
Read 2 more answers
Let p= x^2-7.
Advocard [28]

Since p = x² - 7, you can substitute/plug in p for x² - 7

So:

(x² - 7)² - 4x² + 28 = 5

(p)² - 4x² + 28 = 5      You can factor out -4 from (-4x² + 28)

p² - 4(x² - 7) = 5        Plug in p

p² - 4p = 5        Subtract 5

p² - 4p - 5 = 0        Your answer is C

8 0
3 years ago
A circle has a radius of 7 cm. Workout the area of the circle. Give your answer correct to three significant figures.
anastassius [24]

Answer:

πr²=22/7×49

=22×7

=154

hope it helps

Mark me brainliest

5 0
3 years ago
Please help<br>explain one and I'll figure out the rest thanks
Nookie1986 [14]
The page gives you the information that 1 kg is equal to 1000 grams.
This means that you just need to multiply each kg by 1000.

e.g. 6.8 * 1000 = 6800

Hope this helps!
6 0
3 years ago
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