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Tanzania [10]
2 years ago
8

PLEASE HELP ASAP

Mathematics
2 answers:
krek1111 [17]2 years ago
6 0

Answer:

the second option 2a-6b+c

MrRa [10]2 years ago
6 0

Answer:

2a - 6b + c

Step-by-step explanation:

(a+a)(-5b-b)(2c-c)

2a-6b+c

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Simora [160]

Part A: Determine the test average for your math class after completing test 2. (2 points)

Part B: Determine the test average for your science class after the completing test 2. (2 points)

Part C: Which class had a higher average after completing test 4? Show work to support your answer. (6 points)

5 0
2 years ago
Read 2 more answers
In a statistics mid-term exam graded out of 100 points, the distribution of the exam scores was bi-modal with a mean of 70 point
Mnenie [13.5K]

Answer:

Step-by-step explanation:

Assuming a normal distribution for the distribution of the points scored by students in the exam, the formula for normal distribution is expressed as

z = (x - u)/s

Where

x = points scored by students

u = mean score

s = standard deviation

From the information given,

u = 70 points

s = 10.

We want to find the probability of students scored between 40 points and 100 points. It is expressed as

P(40 lesser than x lesser than or equal to 100)

For x = 40,

z = (40 - 70)/10 =-3.0

Looking at the normal distribution table, the corresponding z score is 0.0135

For x = 100,

z = (100 - 70)/10 =3.0

Looking at the normal distribution table, the corresponding z score is 0.99865

P(40 lesser than x lesser than or equal to 100) = 0.99865 - 0.0135 = 0.98515

The percentage of students scored between 40 points and 100 points will be 0.986 × 100 = 98.4%

4 0
3 years ago
Read 2 more answers
Find all the solutions for the equation x4 = 16
Olenka [21]

Answer:

x=4

Step-by-step explanation:

16 divided by 4 is 4

5 0
3 years ago
Pls answer ASAP this is timed and don’t put a link
Serjik [45]

Answer:

C: mean 6.5 median 6

Step-by-step explanation:

median you find middle number in sorted numbers lined up. mean is all numbers added up and divided by how many there are

8 0
3 years ago
Question c please, it’s about probabilities. i attached photo
Reil [10]

Answer:

200

Step-by-step explanation:

Assuming all of the pie chart sections are equal.

There are 5 equal sections so divide the 1000 spins by 5 and you get 200

6 0
3 years ago
Read 2 more answers
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