Mathematics Middle School

Help! Question on khan academy! pls explain

Help! Question On Khan Academy! Pls Explain

Answers

Answer 1

Answer:

He will have 10.

Step-by-step explanation:

this is an example of the counting principle.

when you add the numbers of a probability, it will give you the amount you need.

4 + 3 + 3 = 10. hope this helped! branliest plz.

Answer 2
Answer:36
3x4x3
It says combination usually when it says combination it means to multiply.

Related Questions

Please help me answer this question.

Answers

18c - 30d + 36
hope it helped

Please help me understand how to work out these types of equations?
My teacher isn't doing a very good job at it right now.

Answers

Answer:

48

Step-by-step explanation:

2.4 (12 / 1/4)

First you do distributive property (multiplying the number in front of the parenthesis).

28.8 / 0.6

Then you just do the math

48

It's pretty easy, but it just depends on how somebody explains it.

what is 2x + 20 ≤ 50

Answers

Answer:

x ≤ 15

Step-by-step explanation:

2x + 20 - 20 ≤ 50 -20

2x ≤ 30

2x/2 ≤ 30/2

x ≤ 15

plz help I need this now

Answers

Answer: 1 30.0

3 20

2 8

Step-by-step explanation:

answer this please please pls ya

Answers

Answer:

A

Step-by-step explanation:

took the test

Solve the following expression: (36 + 14) ÷ 10 . Show all the steps taken. *

Answers

Answer:

(36 + 14) ÷ 10 = 5

Step-by-step explanation:

Using PEMDAS we have to simplify the parentheses first. 36 + 14 is 50. Next we have to divide. 50 ÷ 10 is 5. The answer to (36 + 14) ÷ 10 = 5.

If this helped I would appreciate it if you marked me brainliest. Thank you and have a nice day!

Answer:

First finish the brackets

36+14=40

40/10

4

Step-by-step explanation:

I hope this is all the step you need

Reflection/Math please help

Answers

Answer:

Step-by-step explanation:

A' = (-4, 1)

B' = (-7, 2)

C' = (-2, 8)

D' = (-2, 3)

what the other guy said

Setting 7 / 3 equal to which ratio would result in a valid proportion? a.9 / 49 b.18 / 42 c.42 / 18 d.49 / 9

Answers

I believe the answer is C, but please correct me if I’m wrong!

All of last year’s car models were marked down 40%. Tracy wants to buy a car on sale for $18,000. What was the retail price of the car?

Answers

25,200 is the retail price of the car. 18000 + (40% = 7200) equals to 25,200.

Answer:

25,200.

25,200 is the retail price of the car. 18000

+ (40% = 7200)

equals to 25,200.

Eight pipes were turned on to fill the pool in 36 hours. Then, after 12 hours some of the pipes were turned off, and the rest of the pool was filled in 32 hours. How many pipes were turned off?
Please show your work

Answers

Answer:

4 pipes (im pretty sure)

-but i hope this was correct and if not i hope it at least helped have a good rest of your day :)

Step-by-step explanation:

because 36 - 32= 34

6 or 7 i would think. hope that helps.

BRAINLIEST PLZ HELP!!!! Which inequality is represented by this graph?

Answers

Answer:

I think its the last one????

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

If the circle is filled in that means that it is equal to (the line under the inequality). And the inequality sign is facing the same direction as the graph (which in this case is right) so that means that the inequality sign in facing right!

Hope this helps!

1. At a temperature of 22oC, a liquid that has a volume of 5 mL. The liquid also has a mass of 3 grams. What is the density of this liquid?

.6 g/mL
1.67 g/mL
15 g/mL

Answers

Answer:

The first option.

Step-by-step explanation:

Use the density formula: p = m/v

M = mass(3); B = volume(5)

3/5 = .6

Hope this helps! Have a nice day!

The first option. You can figure this out by using the formula of density=mass\volume

Identify the pattern rule for this sequence: 2, 8, 7, 13, 12, 18, 17…
multiply by 4, divide by 1
add 6, subtract 1
add 5, subtract 1
multiply by 4, subtract 1

Answers

I may be wrong but I think add 6 subtract one

Uhhh pls help. I know that A is not it.

Answers

The answer is B, because those ones are similar
I would say the answer is B.

solve the proportion. where necessary, round to the nearest hundredth. 8/2 = x+3/4

Answers

Answer:

x = 13

Step-by-step explanation:

8/2 = (x + 3)/4

~Simplify

4 = (x + 3)/4

~Multiply 4 to both sides

16 = x + 3

~Subtract 3 to both sides

13 = x

Best of Luck!

Karen earns $5 by delivering newspapers each week. She saves $3 and she spends the rest. How many weeks will it take her to save enough money to buy a $35 gift card? (Use the table to help you solve the problem; you will need to copy it onto a piece of paper

Answers

It will take her 12 weeks overall

Answer:

i got 2.5 weeks

Step-by-step explanation:

you subtract 5-3=2 so she saves 2$ every day.So divide 35 to 2 and get 17.5.

then divide 17.5 from 7 days and get 2.5weeks

I THINK!

Nicholas has some cans at home to donate to the soup kitchen, but decides to start a can drive at his school to see if others will help. The equation representing this is y = 235x + 15, where x is the number of days, and y is the number of cans collected. Which statements are true based on the equation given. Select all that apply.


A Nicholas had 235 cans at home.
B The school collected 235 cans a day.
C Nicholas had 15 cans at home.
D The school collected 15 cans daily.

Answers

Answer:

It is A and D Right?

Step-by-step explanation:

C) Nicholas had 15 cans at home

I NEED IT ASAP PLZ AND I NEED THEM ALL ANSWER PLZ

Use the table to answer the questions.

X Y Point
-8 8 L
0 4 M
4 2 N
8 0 P

Calculate the slope between point L and point M using the change in y and the change in x. Show all work in the formula. slope =m =

2) Calculate the slope between point N and point P using the change in y and the change in x. Show all work in the formula. slope =m =

3) Write the letter and ordered pair of the y-intercept.

Answers

Answer:

See below for answers

Step-by-step explanation:

1) Slope is Rise/Run=(y2-y1)/(x2-x1)=(4-8)/(0-(-8))=(-4/8)=-1/2, therefore m=-1/2

2) Slope is Rise/Run=(y2-y1)/(x2-x1)=(0-2)/(8-4)=-2/4=-1/2, therefore m=-1/2

3) The y-intercept is point M because the y-intercept of a function is where the graph will cross the y-axis which also means the y-value when x=0. Therefore, the y-intercept is point M which is (0,4)

1. M=-1/2

2. M=-1/2

3. The y-intercept is point M which is (0,4)

Which is the best estimate for 6,193 ÷ 48 using compatible numbers.
A. 100
B. 120
C. 150
D. 160

Answers

It would be B. 120 you would usually round up but the closest one to 129.02083 is 130 and since there is no 130 it would be 120

The best estimate for 6,193 ÷ 48 using compatible numbers is 120. Therefore, option B is the correct answer.

Given that, 6,193 ÷ 48.

What is the division?

The division is one of the basic arithmetic operations in math in which a larger number is broken down into smaller groups having the same number of items.

Here, the number 6,193 can be rounded off to 6000 and the number 48 can be rounded off to 50.

So, 6,193 ÷ 48

= 6000 ÷ 50

= 120

The best estimate for 6,193 ÷ 48 using compatible numbers is 120. Therefore, option B is the correct answer.

To learn more about the division visit:

https://brainly.com/question/1575906.

#SPJ2

Pls help me! Show your work!

Answers

Scale factor-6 because 4x6=24 5x6=30

The product of a number and -3, increased by 8 is 20. I need help. >:

Answers

Answer:

-4

Step-by-step explanation:

-3(x)+8=20

-3x=12

x=-4

The dog knows it should not be traveling at this time, but follows his owner. Would this be an example of an internal or external conflict? Why?

Answers

Answer:

internal conflict

Step-by-step explanation:

bc the dog cares about his owner but he also knows he shouldn't b traveling rn so its a problem within him. Hope this helps

Internal conflict because the dog wants to be with his owner there for follows him

what is 11/15 +[-7/12 = ?

Answers

Answer: 3/20

Step-by-step explanation:

11/15+(-7/12)=3/20 hope it helped

Michael decided to make French toast. He finds a recipe that calls for the following ingredients:

FRENCH TOAST
12 slices of bread
4 eggs
1 cup of milk
1 teaspoon of cinnamon

Michael makes a single recipe and shares the food equally among himself AND his four family members. How many slices of French toast does each person receive?

A.Each person gets 2 2/5 slices of French toast.
B.Each person gets 1/2 slice of French toast.
C.Each person gets 2 slices of French toast.
D.Each person gets 12 slices of French toast.
E.Each person gets 5 slices of French toast.
F.Each person gets 5/2 slices of French toast.

Answers

Answer:

The answer is "A" because you would have everyone get 2 pieces and you would give everyone 2/5 which would evenly divide 12 pieces

Im pretty sure it is A! But I still could be wrong. PLease forgive me if im wrong but I tried my hardest. If Im wrong pls correct.

(if correct could I maybe have brainliest? Tysm!)

Thats all. LOL cya

btw don't cheat anymore

                  WINK WINK WINK

lol

pls help i only have 2 minutes!!!!!!!!!!!!!!

Answers

Answer:

40 + ( -63) is less

Step-by-step explanation:

.... .....

Answer:

(-25)+12

=13

40+(-63)

=23

ILL MARK BRAINLIST please answer asap

Answers

Answer:

what's the question????

Step-by-step explanation:

Answer:

what do you need help with

Step-by-step explanation:

PLEASE ANSWER! I WILL GIVE 80+ POINTS, BRAINLIEST, A THANKS, 5 STARS, AND A FOLLOW IF YOU ANSWER ALL OF THESE (P.S they all have to do with direct variation):

#1) If y varies directly with x, write an equation for the direct variation. Then find each value. If y = –4 when x = 10, find y when x = 5

#2) If y varies directly with x, write an equation for the direct variation. Then find each value. If y = 12 when x = –15, find y when x = 2

#3) If y varies directly with x, write an equation for the direct variation. Then find each value. Find x when y = 18, if y = 9 when x = 8.

Answers

Answer:

Step-by-step explanation:

1: -2?

2: 17?

3: 16?

Which group of numbers is listed from least to greatest?

A. 5, 3, 2, -6, -8
B. -7, -4, -2, 1, 5
C. -2, 3, -4, 5, -7
D. -2, -3, -5, 0, 4

Answers

Answer:

The answer should be B

Step-by-step explanation:

The answer is B. Since it starts in the greater negative number than the others.

HELP ME I DONT UNDERSTAND

Answers

Its A because the ratio from females to males ls 5:3

Answer:

B. He should focus on females because the ratio of females to males is 5:2.

Step-by-step explanation:

By looking at the graph, you can see that there are 25 females and 10 males. The ratio for this is 25:10, but we can simplify by dividing both sides by 5! 25/5=5, and 10/5=2, so the simplified ratio of 25:10 is 5:2. If you look at all of the answer choices, you really don't have to look at the words a lot; there's only one choice that includes the ratio 5:2. That choice is B, so B is the answer!

Hope this helps you out!! Have an amazing day o(*^▽^*)o

Suppose that y is directly proportional to x, and y = −16 when x = −2. What is the constant of proportionality?

A) −8
B) −
1
8
C) 1
8
D) 8

Answers

Answer:

In the given expression the constant of proportionality is  k = 8.

Step-by-step explanation:

The quantity P is said to be directly proportional to Q if they vary in proportion to each other.


Here, P ∝ Q ⇔  P = kQ : k = Proportionality Constant


Now, here given y ∝ x   and x =  -2, y = -16

Now, y ∝ x ⇒  y =  kxor, (-16)   = k (-2) or, k = 16/2  = 8 ⇒ k = 8So, for k = 8, y ∝ x 

Hence, in the given expression the constant of proportionality is  k = 8.

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