Mathematics Middle School

Write an algebraic expression for the following: twice a number *
4 - 5n
2x
5n - 4
2 + 5 x h

Answers

Answer 1
2x ! the number would be x and 2x is 2 times x!
Answer 2

Answer:

2x

Step-by-step explanation:

1. when a number and a variable are right beside eachother it means that you would multiply them. the equation 2x is the same as 2•x but is simplified to 2x

Related Questions

MODELING REAL LIFE Lightning strikes Earth 1000 times in 10 seconds.

a. How many times does lightning strike in 12 seconds?

Lightning strikes ? times in 12 seconds.

Question 2
b. How many seconds does it take for lightning to strike 7250 times?

It takes ? seconds for lightning to strike 7250 times.

Answers

Answer:

Didn't I answer this for you already?

a) 1200 times

b)72.5 seconds

Step-by-step explanation:

in one second it will strike 1000/10=100 times

so in 12 seconds it will strike 100x12=1200 times

HELP ME PLS!!!

Benjamin rolls two 6-sided number cubes. What is the probability that he rolls a sum equal to 5? Use the diagram of the sample space to help you.

a. 1/11

b. 5/36

c. 4/36 or 1/9

d. 2/36 or 1/18​

Answers

The answer for this would be c. 4/36 or 1/9
C is the answer hope this helps

PLZ HELP ME THE QUESTION IS IN THE PIC

Answers

Answer:

Triangular Pyramid

Step-by-step explanation:

Answer:

the first question on the page

Hey! can you guys please solve all correctly? i need them asap btw, thanks! (I will give brainliest and 15 points)

Answers

The answer should be D because whenever x is bigger than 5 then the left side would be bigger than 2.

what is the expanded form of 4(y+6) ?

Answers

Answer: 4y + 24

Step-by-step explanation: In this problem, the 4 distributes

through the parentheses, multiplying by each of the terms inside.

So we have 4(y) + 4(6) which simplifies to 4y + 24.

please help me!!! It's due in a hour and I have slot on my plate!!
Write the integer that best represents the situations described.

1. A building is 35 stories tall. 1. _______________________

2. Hikers descended about 270 feet. 2. _______________________

3. Bob owes his sister $12. 3. _______________________

4. The temperature rose 19°. 4. _______________________

5. The city is 15 feet below sea level. 5. _______________________

6. You deposit $25 in your bank account. 6. _______________________

Answers

Answer:

1:+35

2:-270

3:-12

4+19

5:-15

6:-25

Step-by-step explanation:

1. 35 , positive

2. -270

3. -$12

4. 19 degrees, positive

5. $25, positive

I think this was what you were asking lol

PLS HELP ME I WILL MARK BRANILEST!!!

Answers

Go ahead and mark him brainliest, he got it first

Answer:

bac

Step-by-step explanation:

got banned lel

what is 5/8 as a decimal please give explanation
WILL GIVE CROWN

Answers

Answer:

One eighth is equal to 0.125.  Four eighths is equal to one half, or 0.5.  So five eighths is 0.5 + 0.125, which equals 0.625.

Answer:

0.625

Step-by-step explanation:

1/8 as a decimal is 0.125

to find 5/8 you multiply .125 times 5 which gives you 0.625. Hope this helps!

please help me i have 1 more after this

Answers

Answer:

11

Step-by-step explanation:

24 -:- 3+3

8+3

11

Answer:

9

Step-by-step explanation:

Please help but only answer if u know it!

Answers

Step-by-step explanation:

[tex] \frac{ {7}^{4} }{ {7}^{ - 3} } = {7}^{4 - - 3} = {7}^{4 + 3} = {7}^{7} [/tex]

Answer:

7 to the power of 4 / 7-3

Step-by-step explanation:

what is the total giving brainlist

Answers

Answer:

5.60

Step-by-step explanation:

The answer: 6.46x

Explanation: You add up all the costs for one pizza. Then x would stand for how many pizzas you want to make.

On a day in the month of February, the temperature in Barrow, Alaska, is -21. At the same time, the temperature in Northway, Alaska is -13.
Write an inequality to compare -21 and -13. Which temperature is warmer

Answers

Answer:

In Barrow it's colder than it is in Northway.

Step-by-step explanation:

-21 is less than < -13

Meg laid 15 tiles in 50 minutes.
Jessica worked for 85 minutes at a faster rate per tile than Meg.
Choose all the rates that could be Jessica’s rate.


20 tiles in 85 minutes


24 tiles in 85 minutes


28 tiles in 85 minutes


1 tile in 3 minutes


1 tile in 4 minutes

Answers

1 tile in 4 minutes

i need help im bad at math

Answers

Answer:

The first box: 1.2 the second box: 20.4

Step-by-step explanation:

Can be simplified to 6 gallons and 5 seconds, then divide those two. After that, 1.2*17

1.2 20.4 hope that helped

15 points!! Will give brainliest for smartest answer!

Answers

Answer:

120

Step-by-step explanation:

since she is trying to keep it under 40 each month and there is a flat fee of 34$ she will have 6$ left then you just have to divide so you will do 6/0.05

120 is awnser ahhahshsbxnndnxnx

pls answer if you know it

Answers

Answer:

v<-20

Step-by-step explanation:

We can treat this as an equation and subtract 25 from both sides:

v<-20

HELP ME ASAP!!!!!!!!

Answers

Answer:

9. 2 1/12     10. 3/14

11. D             12. 7/8

13. 5/8 hours  13. 1/12

15. No he is not correct because 1/2 equals 2/4, 1/4 plus 2/4 equals 3/4

16. No he is not correct because 5/6 is 10/12 and its way greater than 6/12

i know you already have the answer but i hope you’re having a great day!! :)

Can someone pls help me with this I really need it :/

Answers

Step-by-step explanation:

√7 + √7 = 2√7 (irrational)

√7 + (-√7) = 0 (rational)

√7 + 0 = √7 (irrational)

√7 + 7 = 7 + √7 (irrational)

The answer is the 2nd option / -√7.

Answer: The answer is the 2nd option / -√7.

Step-by-step explanation:

......Help plssssssssssss.........

Answers

Answer: 18

Step-by-step explanation:

Answer:

12/100 X 150= 18

18 gallons

Classify this number

-7?

Answers

Answer:

whole number (maybe)............

Answer:

That is a integer, and rational number

Step-by-step explanation:

It has a negative it cannot be a WHOLE NUMBER

Plsssssssss Help!!!!!!
Sabrina is going to rent a bicycle while on vacation. There are two rental companies she can choose from. The first company charges $10 plus a rate of $2 per hour until the bicycle is returned. The second company’s rental charges can be represented by the equation c=3h+6, where c she represents the total cost and h represents the total number of hours the bicycle is rented.

Answers

Answer:

16

Step-by-step explanation:

If shes out for 3 hours, times 2 by 3, 2x3 then they have a fee of 10 at the beginning then you add that on to 6 then you get 16. ( Sorry if I'

m wrong this is just how I was taught )

Answer:

i would say 3. $15 is your answer

hope this helps :)

i'm so sorry if i'm wrong

Consider the following quadratic equation. f(x) = 9x^2
Part A: Write a function, g(x), the shifts f(x) down by 3 units.
Part B: Write a function, h(x), that vertically stretches f(x) by 6 units.
Part C: Write a function, m(x), that reflects f(x) about the x-axis.

Answers

Answer:

[tex]g(x) = 9x^{2} -3[/tex][tex]h(x) = 54x^{2}[/tex][tex]m(x) = -9x^{2}[/tex]

Explanation:

[tex]f(x) = a(x-h)^{2} + k[/tex]

a:

Determines direction.Negative x reflects over x-axis.a < 1 --> vertically shrunk.a > 1 --> vertically streched.

h:

Determines left and right.Sign of h flips...(x + h) goes left.(x - h) goes right.

k:

Determines up and down.

Can you help me with my math

Answers

1.domain={1,3,6} range={2,5,8} yes it is a function
2.domain={3,2} range={7,13} no it’s is not a function
3.domain={0,2,4} range={-1,1,3,5} no it is not a function
4. 0 ride=$0 1ride=$3 2ride=$6 3ride=$9 4ride=$12 5ride=$15
Yes it is a function
(If you want me to explain I can)

Hope this helps

Have a great day/night

the value of the expression is?

Answers

Answer:

24

Step-by-step explanation:

u can do mental math or use a calculator

the answer would be 24

A basketball has a mass of 1 kg and is traveling 12 m/s.

What would happen to the velocity if the momentum of the basketball were cut in half?

Answers

Answer:

[tex]6\:\mathrm{m/s}[/tex] (The velocity would also be halved)

Step-by-step explanation:

The momentum of an object is given as [tex]p=mv[/tex] where [tex]m[/tex] is the mass of the object and [tex]v[/tex] is the velocity of the object.

Because mass is constant, if the momentum ([tex]p[/tex]) was cut in half, the velocity of the basketball would also be halved:

Let [tex]p_1[/tex] be the initial momentum and [tex]p_2[/tex] be the final momentum:

[tex]\frac{1}{2}p_1=p_2,\\\frac{1}{2}mv_1=mv_2, \\\fbox{$\frac{1}{2}v_1=v_2$}[/tex]

Therefore, the basketball's new velocity is [tex]\frac{1}{2}\cdot 12=\fbox{$6\:\mathrm{m/s}$}[/tex].

a basketball has a mass of 1kg and is traveling 12 m/s
6 m/s

The rabbits ate three fifths of the celery crop in each of 8 gardens. What fraction of celery crop did they eat in all?

twenty four fortieths
eleven fifths
eleven fourteenths
twenty four fifths

Answers

The answer is a
Step by step
Multiplication
8×5 = 40
8×3 = 21
21/40

What do the area of this figure?

Answers

Answer:

155

Step-by-step explanation:

just did it

46 :) added them together

On a large baking tray, 40 cookies can be baked together. To bake 40 cookies it takes 14 minutes, for baking 80 cookies it takes 28 minutes, for baking 100 cookies it takes 42 minutes. How much time will it take to bake 140 cookies?

A-49 B-56 C-57 D48

Answers

the answer is B (56) because it states that it takes 14 minutes to bake 40 cookies, and you already have 100 cookies so you would just add the time it took to bake 40 cookies which would be 42+14=56

What fraction is greater than -2/3 and less than -1/2

Answers

-2/3= -0.666 (repeating)-1/2= -0.5
Answer is 8 I searched it up

25 points, please help!!!!!!!!!

Which statement best describes the area of Triangle ABC shown below?



It is twice the area of a square of side length 2 units.
It is one-half the area of a square of side length 2 units.
It is twice the area of a rectangle of length 2 units and width 4 units.
It is one-half the area of a rectangle of length 2 units and width 4 units.

Answers

D, “it is one-half the area of a rectangle of length 2 units and width 4 units.”
HOPE THIS HELPS!!!
It is one-half the area of a rectangle of length 2 units and width 4 units.
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