If grades in QMET are normally distributed with a mean of 8 and a standard deviation of 19, what proportion of students will score 86 or lower?

Answers

Answer 1

Answer:

Answer:

c and b

Step-by-step explanation:

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Question 3 (Multiple Choice Worth 6 points)(09.01 LC)

Amy is playing a board game and rolls two number cubes. Let A = {the sum of the number cubes is odd}, and let B = {the sum of the number cubes is divisible by 3}. List the outcomes in A ∪ B.
{3, 6, 9, 12}
{1, 3, 5, 7, 9, 11}
{3, 5, 6, 7, 9, 11, 12}
{2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Answers

Answer with Step-by-step explanation:

Sample space on rolling two number cubes is:

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)

Sum of the numbers on the cubes lies between 2 and 12

A = {the sum of the number cubes is odd}

={3,5,7,9,11}

B = {the sum of the number cubes is divisible by 3}

={3,6,9,12}

Hence, A ∪ B={3, 5, 6, 7, 9, 11, 12}

A = {3, 5, 7, 9, 11}
B = {3, 6, 9, 12}

A ∪ B ={3, 5, 6, 7, 9, 11, 12}

Answer: the third option

What negative numbers multiply to get a positive 54

Answers

16 would be the answer

The negative numbers that will multiply to get a positive 54 are -9 and -6.

(x,7) and (11,8); m= -1/5

Answers

Answer:

x=16

Step-by-step explanation:

How do you round 3,962 to the nearest hundred

Answers

Since the hundred number is 9 its a high enough number to round up to 4,000
3= thousand 9=hundred 6=ten 2=one

the answer is 4,000 9 is greater than 5 so round up

In a sale there is 25% off all prices a bed costs £33 how much was it before the sale ?

Answers

25% OFF is 100%-25%=75%
75% is 0.75 in decimal form
if x is the original price then
0.75x=33
x=33/0.75= £44

WILL GIVE BRAINLIEST ANSWER!!!!Which of the following points satisfies the inequality 2x - 3y < 1?

(-2,1)
(1/2, 0)
(2, -1)

Answers

Check first one:
2(-2)- 3(1) < 1
-4 -3 < 1
-7 < 1
This is true, let's check others, just to be sure
Check second one:
2(1/2) - 3(0) < 1
1 - 0 < 1
This is false
Check third one :
2(2)- 3(1) < 1
4- 3 < 1
This is false

So answer is (-2,1)

(-2,1) satisfies
2×-2-3×1=-7
-7<1

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