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Phantasy [73]
3 years ago
11

HELP ME PLZZ I NEED HELP WITH THIS NOW!!

Mathematics
2 answers:
Komok [63]3 years ago
7 0
A. Not sure tho. Sorry
andrezito [222]3 years ago
3 0
Believe the answer is A
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Please help. will give brainliest ​
vichka [17]

Answer:

  • B. The probability that the student received a grade better than C is 0.45

Step-by-step explanation:

<u>Total number of students:</u>

  • 15 + 30 + 35 + 16 + 4 = 100
<h3>Statements</h3>

A.

  • p(<D) = 4/100 = 0.04
  • 0.04 ≠ 0.2
  • Incorrect

B.

  • p(>C) = (30 + 15)/100 = 45/100 = 0.45
  • 0.45 = 0.45
  • Correct

C.

  • p(not A or B) = (100 - 15 - 30)/100 = 55/100 = 0.55
  • 0.55 ≠ 0.45
  • Incorrect

D.

  • p(B or C) = (30 + 35)/100 = 65/100 = 0.65
  • 0.65 ≠ 0.35
  • Incorrect

6 0
2 years ago
19. Ms. Porter had eight parties at her house last year. The number of guests at each party
KatRina [158]

Answer:

17

Step-by-step explanation:

Order the numbers from Smallest to Largest...

9, 10, 14, 15, 19, 21, 21, 27

Then the middle number is your answer.

Since there are 2 Middle Numbers, you add them together, and divide by 2.

Which would be, 17.

6 0
2 years ago
Read 2 more answers
Find the sum of a finite geometric sequence from n = 1 to n = 6, using the expression −2(5)n − 1.
vazorg [7]
\bf \qquad \qquad \textit{sum of a finite geometric sequence}\\\\&#10;S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;r=\textit{common ratio}\\&#10;----------\\&#10;a_1=-2\\&#10;r=5\\&#10;n=6&#10;\end{cases}&#10;\\\\\\&#10;S_6=-2\left( \cfrac{1-5^6}{1-5} \right)
8 0
3 years ago
Read 2 more answers
The temperature was -12 degrees in the morning and rose to a high of 27 degrees for the day
leonid [27]
We went from -12 degrees to 27 degrees.

27 - (-12) = 27 + 12 = 39
5 0
3 years ago
Find the circumference of a circle whose area is 452.16 square meters ( ue 3.1416 as the value of
IrinaVladis [17]
Area of circle, πr² = 452.16

πr² = 452.16

r² = 452.16/π,            π ≈ 3.1416

r = √(452.16/π) = √(452.16/3.1416) ≈ 11.997

Circumference  = 2πr

C = 2*3.1416*11.997

C ≈ 75.38

Circumference is ≈ 75.38 m.

Hope this helps.
5 0
3 years ago
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