Mathematics Middle School

help me please!! i will give brainliest

Answers

Answer 1

Answer: -7x 4=

Step-by-step explanation:

Answer 2

Answer:

wtffffffffffffffffffffffffffffffffffffffff this looks hard

Step-by-step explanation:

Related Questions

On a round trip over the same roads, Sophia averaged 24 mi/hr going and 30 mi/hr coming back. If the whole trip took 13.5 hours, what is the distance one way? (Hint: Find the time for each part of the round trip)

Answers

Answer:

d = rt. In this problem we are looking for the distance, but we will have to go about it indirectly. If she's traveling the same exact road going and returning, then the distance traveled both ways is exactly the same. Since d = rt, and d is the same, by the substitution property, if and , then , and . So we need to rt for the trip going, rt for the trip returning and set them equal to each other and solve for t. Going is a rate of 24, and the time is t (since we don't know t), and returning is a rate of 30, and the time is 13 1/3-t. (If the whole trip takes 13 1/3 hours, and t is the time going, then the time returning is the difference between the total time and the going time. That concept is one that baffles most algebra students!). So our r1t1 is 24t, and our r2t2 is 30(13 1/3 - t). Set them equal to each other and that will look like this: That fraction of 40/3 is 13 1/3 made into an improper fraction. Distributing that we will have and 54t = 400. That means that t = 7.407. We have time, and that's great, but we need distance! Go back to one of your equations for distance and sub in t and solve for d. d = 24t, and d = 24(7.407), so d = 177.768 miles.

182.25 because if you multiply 13.5 by 24 and add that by 13.5 times 30 and divide that by two that’s the average of the entire way and then you divide by 2 again to get the average distance one way the units would be mi (miles)

A scrapyard had 200 tons of recycled steel. They sold 15 tons per day for several days. If there are 80 tons left at the scrapyard, how many days have passed?

a) Write and solve an equation to answer the question.

b) What does the solution of your equation mean in terms of the answer to the question?

Answers

Answer:

200 - 80 = 120

120 / 15 = 8

8 days passed

What is the volume of BOTH of the rectangular prisms?

Answers

Volume of both the rectangular prisms:

3) 33
4) 91.125

Answer:

The first one is 33 units.

The second is 91.125 units.

Step-by-step explanation:

find the area of the figure above, help me plissss

Answers

Answer:

Step-by-step explanation:

hope it helps:)

Isaac is on the 4th floor of a building. If he rides an elevator up 7 floors, what floor will he be on?

A. What integer represents the floor Isaac is starting on?
________

B. What integer represents how many floors the elevator will rise?
________

C. What floor will the elevator stop at?
________

Answers

If he’s on the 4th floor and he’s going up to the 7th floor you would add 7+4= 11. He would land on the 11th floor. So (C.)

A =4 B = 7 C=11
4+7=11

Tell whether the graph represents a linear nonproportional or proportional relationship

Answers

Answer:

nonproportional.

Step-by-step explanation:

Answer:

Nonproportional

Step-by-step explanation:

Can someone please answer this i have been struggling this for about 20 minutes all you have to do is copy and paste the link and you will see

Answers

I don’t see any link? try copy and pasting on what you need help on, if you have a computer press Ctrl + C then to paste press Ctrl + V and if your on a mobile double tap the writing and press copy then when you want to paste double tap again and press paste I hope this help

Referring to the Fig. in Question #47, find the cosine of
∠A. Give answer in simplest form.

Answers

Answer:

it equals to 84

Step-by-step explanation:

21+28=49+35=84

the correct answer is 84

now they know I don't know math

Answers

I think that it is the one

Find the value of b if the graph of the equation y = -5x + b goes through the G(4,3) point.

Answers

Answer:

The Value of b is 23

Step-by-step explanation:

substitute 4 for x, and 3 for y. Then move combine like terms.

3 = -5(4) + b

3 = -20 + b

23 = b

We know that x = 4 and y = 3, so plug those in into the equation
3 = -5(4) + b
3 = -20 + b
add 20 on both sides
23 = b

Tank A has a capacity of 20 L. It is half
filled with maple syrup. The ratio of
the volume of maple syrup in Tank A
compared to the volume of maple syrup
in Tank B is 2 : 5. How much maple syrup
is in Tank B?

Answers

Answer:

25 liters in Tank B

Step-by-step explanation:

There is 100 L of maple syrup in Tank B.

pick two sports. Explain how knowing about momentum could help you predict what will happen in the game when you watch these sports on TV.

Answers

Answer:

whats your favourite sports?

Step-by-step explanation:

In football, you have to build momentum in order to throw the football far enough.

In baseball, using a heavier bat or racket and increasing running speed or hand speed.

Triangle PQR has coon instes (2.4), 0(-2,4), R(0,-6). Write the coordinates of the vertices of the image of a triangle afte aanslation 3 units left and 1 unit up.

Answers

P’= (-1,5)
Q’=(-5,5)
R’=(-3,-5)

(0,3) and (1,-3) cuz since it moves 4 units to the left it makes it negative 3 and 1 unit up

Express the scale of 1 inch to 20 feet as a scale without units. PLEASE EXPLAIN

Answers

Answer:

1 to 240

Step-by-step explanation:

It's a ratio that can also be answered as 1:240. 20ft=240in,so express it like that. Hope this helps!

BTW: If your still confused go to

I don't quite understand these sorry if its a lot to u guys but I need each question done

Answers

Answer:

For question 5 the answer is A

Step-by-step explanation:

Question 1: A, a triangular prism

You can tell that it’s a triangle prism because a pyramid would have a square in the middle, not a triangle

Question 2: 20ft

Horse a travels 32 feet per second and horse b travels 28 ft per second. To find how far they Travis’s after 5 seconds you multiply by 5 because 1 (second) x 5 is 5 seconds

Horse a: 32 x 5 = 160

Horse b: 28 x 5 = 140

To fin how much further horse a tracked subtract.

160 - 140 = 20

So horse a traveled 20 more ft

Question 3: 80 nickels, 120 dimes, and 300 quarters

For every 2 nickels there are 3 dimes and for every 2 dimes there are 5 quarters
Let the number of nickels be n. Then the number of dimes is 3/2 n. There are 5/2 as many quarters as dimes, so there are 5/2 * 3/2 = 15/4 as many quarters as nickels = 15/4 n thus the number of nickels, dimes and quarters is

n + 3/2 n + 15/4 = 4/4 n + 15/4 n = 25/4 n

25/4 n = 500

n = 500 * 4/25 = 80

d = 3/2 n = 3/2* 80 = 120

q = 15/4 n = 15/4 * 80 = 300

So

80 nickels, 120 dimes, and 300 quarters

How much are the coins in the piggy bank worth?

Nickel = 5 cents

Dime = 10 cents

Quarter = 25 cents

4 quarter make a dollar so divide the # of quarter by 4

300 divided by 4= $75

20 nickels make a dollar so divide the # of nickels by 20

80 divided by 20 = $4

10 dimes make a dollar so divide the # of dimes by 10

120 divided by 10= $12

Add

75 + 4 + 12 = $91

Do the answer to part be is $91

Question 4: $51.96

If 3 books is 12.99 we need to find out how much one is. So we divide 12/89 by 3

12.99 divided by 3 = 4.33

So one book is $4.33. Now we need to find out how much 12 books cost. So multiply 4.33 by 12.

4.33 x 12 = $51.96

(Hope this helps)

0.3 divied by 39.06 where in the quotient should the decimal go?

Answers

We then have the equations:
390.6 ÷ 3 = 130.2
and therefore:
39.06 ÷ 0.3 = 130.2
Both calculated to 1 decimal places.

1 3 0. 2
3 3 9 0. 6
− 3
0 9
− 9
0 0
− 0
0 6
− 6
0

130.2 will be your final answer

To avoid a storm, a passenger-jet pilot descended 0.38 mile in 0.4 minute. What was the plane's average change of altitude per minute?

Answers

Answer:

0.55 mile / minute

Step-by-step explanation:

The average change of altitude per minute would simply be the ratio of distance descended over time. That is:

average change of altitude = distance / time

average change of altitude = 0.44 mile / 0.8 minutes

average change of altitude = 0.55 mile / minute

please finish the work part for NO.10, I have the answer just need the work part. Please and thank you!! PS. PLEASE SHOW. WORK ON PAPER!!

Answers

Where is it? The problem I don’t see it.

Solve the inequality:
x + 10 + 4x ≤ 45
x ≤ ____?

Answers

Answer:

Inequality Form:

x≤7

Answer:
The inequality would be
x < 7

i keep getting confused on this one

Answers

Answer:

he made the mistake on step one, he didn't distribute correctly

Step-by-step explanation:

-5(x-1) = -5x +5

not -5x - 1

does anyone know slope?

Answers

Answer:

C. y = 10x + 10

Step-by-step explanation:

[tex]\frac{rise}{run\\}[/tex] = [tex]\frac{10}{1}[/tex] = 10

y = 10x + 10

if k = 7 then find the value of 2k²

Answers

Answer:

Step-by-step explanation:

k = 7

2k^2

do the exponent

7 x 7 = 49

49 x 2 = 98

Answer:

boy

Step-by-step explanation:

Kasper made 3 gallons of fruit punch for a party

Answers

Answer:

C) - the one with 3 squares and 8 parts inside it

Step-by-step explanation:

It would be this because there are 8 servings in one gallon so 24 servings in all between the 3 gallons

1/4 + 2/3 what does it equal?

Answers

your answer is 0.916

Answer:

.91

Step-by-step explanation:

In complete sentences, explain an advantage and disadvantage for paying by cash.

Answers

Answer:

Step-by-step explanation:The advantag of paying with cash is you don’t have to get a card and swap it sometimes not know the balance on the card rather with money u know exactly how much you have .a problem with cash is that u can drop and not get it back.As if u drop a the card u can lock it and change money to a different account or card.yea so that’s the advantage and disadvantage to paying by cash

hopes this helps

Ok with cash, the advantage is that it’s easier to do and quicker, the disadvantage is that it can be lost very easily and it can be stolen and there would be nothing to do about it. With credit card, if it gets stolen, it can be canceled and you could get a new one. Same if you lose it.

Hope I helped! And a little advice, pls don’t copy and past. Instead change the order, and the words of my answer to help.

What is 81/50 as a mixed number?

Answers

Answer:

1 31/50

Step-by-step explanation:

there is one set of 50 and the remaining it 31 :)

1 31/50 1 set of 50 81-50= 31

HELP ME PLSSSSSSSSSSSSSSS THIS STUFF IS HARD

Answers

Answer:

v=58

Step-by-step explanation:

All we have to do here is plug in the numbers for the corresponding letters. That means we are left with v=13+9*5. So then all we have to do is put it in the calculator and we get 58.

Answer:

v=58

Step-by-step explanation:

Bob ate 12 cookies over the past two days. Assume he ate the same amount of cookies each day. How many cookies did Jonathan eat per day?

Answers

Answer:

Its 6 cookies per day

Step-by-step explanation:

12/2=6 6 cookies per day

12 cookies within 2 days..
12/6=2

However, Bob-Jonathan?
This is a confusing question because jonathan is not mentioned..

I hope this helps! Let me know if you have any questions! Good luck on the rest of your assessment!

Mark this as Brainliest if you get a chance:)

which number is not in scientific notation? HELP WORTH 5 POINTS!!

Answers

Answer:

Step-by-step explanation:

Represent the following in rule method C = {0,1,2,3, ......,19}

Answers

Answer:

[tex]C={x\:l\:x \: are \: whole \: numbers \: less \: than \: 20}[/tex]

Answer:

it would probably be C but you should check it

Other Questions

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