Which of the following lists does not include all the factors of the number?10: 1, 2, 5, 10
5: 1, 5
4: 1, 2, 4
21: 1, 21

Answers

Answer 1

Answer: 21: The factors of 21 are 1,3,7,21

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How do you solve 4 x - 11 = 21
Estimate 16.3 X 23.8 ÷ 17.27 + 22.93
Josephine noticed that out of 10 e-mails she received, 7 were advertisements. What can she predict about the number of advertisements she will receive in the next 100 e-mails?
What is the approximate area of a circle whose radius is 3 m long? (Use 3.14 for pi.)
After a party there were 2 2/3 pepperoni pizzas and 1 5/6 cheese pizza left. How much pizza was there left?

Selma's class is making care packages to give to victims of a natural disaster. Selma packs one box in 5 minutes and has already packed 12 boxes. Her friend Trudy packs one box in 7 minutes and has already packed 18 boxes. How many more minutes does each need to work in order to have backed the same number of boxes?

Answers

Every 35 minutes Selma packs 7 boxes, while Trudy packs 5 boxes.

Thus every 35 minutes Selma decreases the difference between them in 2 boxes.

Since the original difference was 6 boxes, Selma needs 3 times 35 minutes, or 105 minutes, in all, to catch Trudy.

Answer- 105 minutes, or 1 hour and 45 minutes.

Eliminate 3x+2y=4
8x-3y=-6

Answers

Steps:
1. Multiply the first line by 3 and the second by 2
3(3x + 2y= 4)
2(8x -3y=-6)
2. New lines are
9x + 6y= 12
16x + -6y=-12
3. Now add/subtract them
25x + 0= 0
25x=0
4. Divide by 25
X=0

5. To find y, substitute the 0 in the x in one of the equations
9x + 6y= 12
9(0) + 6y= 12
6y= 12
6. Divide by 6, your Y=2
7. X=0, Y=2

What is (4-5a)^2 - a (2a -3)

Answers

23a²+-37a+16 is the answer

3a^2+13 should be correct

Mr young has 30 times as many pencils as jack. The whole class has 200 times as many pencils as jack. If jack has 2pencils, how many pencils does mr young have ? And the whole school have?

Answers

well you would do 30*2= 60
and that would be your answer

HELP PRETTY PRETTY PRETTY PLEASE!??!??!?!!?Solve the following inequalitys : 3x + 10 ≥ 4

–4x ≤ –12
Solve and graph the following inequalities.
x - 3 - 12
q-1/2>1/3
q+1/3>1/2
b + 8 <4 (<---) it has a line underneath the <)
x/5>-2 (line underneath)
-x/4<2 (line underneath)
2x – 2 < –12 or 2x + 3 > 7
2x-1/3+3 <-4 or 8x-2/2-1>6(line underneath both)
Solve the following absolute value equation.
x+1/2=-5
Show all work:
Your class hopes to collect at least 325 cans of food for the annual food drive. There were 135 cans donated the first week and 89 more the second week.

a. Write an inequality that describes this situation. Let c represent the number of cans of food that must be collected by the end of the third week for your class to meet or surpass your goal.
. How many cans are needed to meet or surpass your goal? Solve the inequality

Solve: 4x + 6 < -6
Solve: x+x-4<10 (line underneath)
q + 12 - 2(q - 22) >

Answers

1. -2
2. 3
3. -4
Those are the first 3 equations

135 + 89 = 224
325 - 224 = 101
I am not sure what the inequality would be... im sorry

4x + 6 < -6
Answer is -3

x+x-4 < 10
Answer is 7

The last question doesnt have a number to the right so I dont know What you are looking for.
Thats all I know, hope it helps

Solve for X
126°
3x

Vertical angles