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ElenaW [278]
3 years ago
14

It is almost the end of the grading period. I have 730 out of 880 points so far in my math class which means I currently have a

B (83%). There are 90 points remaining before grades come out. My teacher rounds each student's score to the nearest percent. What is the fewest number of points I need to get and end up with a grade of...
C (at least 70%)?_____
B (at least 80%)?_____
A (at least 90%)?_____

Plz help me figure this out

Mathematics
2 answers:
maksim [4K]3 years ago
7 0
What is being asked here? Are they asking for the passing grade or the total with all the other 90 points added? I think it is A, 90%
ipn [44]3 years ago
4 0
616 for a 70%, 704 for an 80%, and 792 for a 90%
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6 0
3 years ago
Consider the equation below
s344n2d4d5 [400]

Answer: B

Step-by-step explanation:

Let's solve the given equation. Then we can see which other equation has the same answer.

-5n+31=-14n-5

36=-9n

n=-4

We need to fina another equation that gives n=4 as the answer.

A. Incorrect

3-6n+3n=-3+4-4n

3-3n=1-4n

n=-2

B. Correct

\frac{11}{4} n+2=-3+\frac{3}{2}n

\frac{5}{4}n=-5

n=-4

C. Incorrect

1=0.75n+3.25

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n=-3

D. Incorrect

-1-22n=-20n-9

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7 0
3 years ago
(1 point) Suppose we will flip a fair coin 100 times. (a) What does 35 heads correspond to on the standard scale? (enter exact a
vlada-n [284]

Answer:

(a) 35 heads correspond to -3 on the standard scale.

(b) z = 2.4 corresponds to 62 heads on the number of heads scale.

Step-by-step explanation:

(a) If we flip a fair coin once, probability of getting head = 0.5

If we flip a fair coin 100 times, mean number of heads = 100(0.5) = 50

If there are N draws with a P probability of success, the standard deviation (SD) is given as:

SD = \sqrt{(N)(P)(1 - P)}

Here, the probability of getting a head (P) is 0.5 while the number of draws (N) is 100. So,

SD = \sqrt{(100)(0.5)(1-0.5)}

SD = 5

The standard scale value is: (35 - 50) / 5 = -3

Hence, 35 heads correspond to -3 on the standard scale.

(b) The standard scale value is 2.4 and we need to find the number of heads.

(X - 50) / 5 = 2.4

X - 50 = 12

X = 62

Hence, z = 2.4 on the standard scale corresponds to 62 on the number of heads scale.

4 0
3 years ago
Anyone know what this means
qaws [65]

Answer:

Positive exponent

Step-by-step explanation:

Like x root 1 , 2 , 3 etc

If it said negative exponent then x root -1, -2 etc etc.

6 0
3 years ago
Read 2 more answers
I will mark branliest please help<br>Find the value of x.
Novosadov [1.4K]

Answer:

The estimated equison will be 38% for the mark

Step-by-step explanation:

and dat will be answer for u

3 0
3 years ago
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