Mathematics Middle School

please help im timed
Which expressions are equivalent to 7(-3/4x-3)? Select two options.
-5 1/4x-21
-7 3/4x7(3)
6 1/4x-21
6 1/4x-4
7(-3/4x)-7(3)

Answers

Answer 1
-5 1/4x-21
7(-3-4x)-7(3)
Answer 2

Answer:

-7 3/4x7(3) and 6 1/4x-4

Step-by-step explanation:

Related Questions

can some one help me i have no idea what this is

Answers

Answer:

b=-25

Step-by-step explanation:

10= -2/5b

10=      -2/5b

------    -------

-2/5       -2/5b

b=-25

Check:

-2/5(-25)=10

10=10

Answer:

b=-25

Step-by-step explanation:

Help me!!! 7th-grade math

Answers

I solved it and the explanation was horrible. Then I used a proffesional sight and it said there's no equation  (┬┬﹏┬┬)

Welp- sorry kid

Your answer would be 4x - 20 I think

Write the answer as a mixed number fraction (if possible).
8 1
5
÷
7 1
2

Answers

Answer:

7_

3 May be right answer in This question

the answer is 162/355
to divide by a fraction, multiply by the reciprocal of that fraction

Please help I need text evidence so please include that in your response I will give you brainlest if you have. Good detailed answer I’m sorry if this is a lot to ask for the story is freak the mighty btw

Answers

Answer:

cite,evidence,cite,evidence, summary it basically means answer the question give evidence from the story explain do it again and then sum up your writing, i hope this is right.

Step-by-step explanation:

simplify the exponential expression:
(2x^2y^4)^3

Answers

Answer:

8x^6y^12

Step-by-step explanation:

Hope that's right!!

Answer:

8x^6y^12

Step-by-step explanation:

I did this before

Find the area of each shaded region please help i just need help with C and D

Answers

Answer:

78

Step-by-step explanation:

I’m pretty sure that the answer is 78

Stefan sells Jin a bicycle for $163 and a helmet for $17...

Answers

Answer:The answer is Stefan spent originally$110.00 on both originally.

* Hopefully this helps:)

180$ he made by bike and helmet

Find the perimeter.

36 cm
24 cm
33 cm
30 cm

Answers

Answer:

36 cm

Step-by-step explanation:

p = all sides added up

so we do 6+6+3+3+9+9 = 36 cm

I agree36 should be the correct answer it's just adding.

Which number in the following equation represents the coefficient?



7y + 2 = 23

Answers

Answer:

7

Step-by-step explanation:

The coefficient is the number used to multiply a variable.

Y is the variable and 7 is the coefficient.

Answer

y=3

Step-by-step explanation:

21/7=3

7 times 3 = 21

21 +2=3

What is the x-coordinate of point B? Write a decimal coordinate.



On a coordinate plane, point B is 1.5 units to the left and 3.5 units up.

Answers

Answer:

(-1.5,3.5)

Step-by-step explanation:

Starting from the Origin move 1.5 left equals -1.5 and 5 units up is 3.5 so, my answer is (-1.5,3.5).

Answer:0.5

Step-by-step explanation:

Collect like terms to simply the expression

3r + (-3r) =



Blank 1:
Question 8 (1 point)
Collect like terms to simplify the expression

2j + (-9j) =



Blank 1:
Question 9 (1 point)
Collect like terms to simplify the expression

12 + 4b - 3 + 2c =



Blank 1:
Question 10 (1 point)
Collect like terms to simplify the expression

7y + 8 - 2y + 4 =



Blank 1:
Question 11 (1 point)
Collect like terms to simplify the expression

2a + 3b - 3a + 4c - b =





(This is not the same as the question before. Look closely.)

Blank 1:
Question 12 (1 point)
What is the perimeter of this triangle (in simplest form)?

Your answer should not have parentheses or multiplication symbols !





Blank 1:
Question 13 (1 point)
Which TWO expressions below are equivalent? (Make sure to click TWO answers !)

a
2(x - 5) + (-7)
b
2x - 17
c
2x - 12
d
x + (-7) + x + 5
e
x + (-7) + (-10)
Question 14 (1 point)
What shows the proper factoring of this expression?

4d + 24

a
4(d + 6)
b
2(d + 12)
c
4d(4 + 6)
d
6(d + 4)
Question 15 (1 point)
What is the proper factoring for this expression?

50 + 25x + 75y

a
75(x + y)
b
25(2 + x + 3y)
c
25(2 + 2x + 3y)
d
25(x + 3y)
Question 16 (0 points)
How confident do you feel about your ability to master this material by January 19?



(Don't worry--by the time we get to the first quiz, you will have had many chances to practice the ideas from this pre-test.)

a
Very confident
b
Pretty confident
c
A little confident
d
Not very confident

Answers

Answer:

1=0 2

Step-by-step explanation:

1= 0 2 is your answer heheehe

15 points

Which statements are true about the ordered pair (7, 19) and the system of equations?

{2x−y=−5 x+3y=22


Select each correct answer.


The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.

The ordered pair (7, 19) is a solution to the second equation because it makes the second equation true.

The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.

The ordered pair (7, 19) is a solution to the system because it makes both equations true.

Answers

Answer:

3 and 2 i think

Step-by-step explanation:

2,3 need an explaination?

A salesperson at a jewelry store earns 8% commission each week....

Answers

Answer:

heidi earned $56 in commision.

hyou take the amount the jewerly store made, 700 in this case and divide it by 100, to find what 1% is. so 1% is 7$, multiply that  by 8, since she makes 8% and that ur answer

Step-by-step explanation:

Ok so 700x0.8 will give 80% and divided by 10=8% the salesperson will earn $56 the total is out of 100,100-8= the amount the jewelry store gets meaning the remaining of the $700,700-56=644. To conclude the salesperson will get $56 and the jewelry store will get $644. Hope this helps :)

NEED ANSWERS ASAP 10 QUESTIONS IF RIGHT WILL GIVE BRAINLIEST

Answers

Sorry couldn’t do 2 but did the other 3

Deborah has 104 baseball cards. She gave 16 baseball cards to her brother Corey. Then she put the remaining baseball cards in an album with 9 baseball cards on each page. How many pages of the album did Deborah use to store all of the baseball cards? Explain your thinking.

Answers

Answer:

10

Step-by-step explanation:

the answer is 9.77777777778 so round because you are not going to cut a page and you get 10.Hope this helps!

Answer:

it would be 10 page but 9 pages full and 1 page with 7 cards.

Step-by-step explanation:

First you subtract 104 - 16= 88. Then, you keep subtracting 9 from 88 to see how many pages needed to be used or you can divide it, and you have your answer!!

4,902 × 0.001 is the same as 4,902 ÷ 10 to the power of 3
True or False?

Answers

Answer:

False

Step-by-step explanation:

4902x0.001 = 4.902

4902/10 = 490.2

490.2^3 does not equal  4.902

Solve for the “x”

X+ 35= 19

Answers

Answer:

x= -16

hope it helps...

Answer:

x=-16

Step-by-step explanation:

19-35=-16=x

Jada bikes x miles to the park and a quarter of that again. How far does Jada bike

Answers

Answer: is that all the question

Step-by-step explanation:

Answer: 1.25x

Step-by-step explanation: x + 1/4 of x = = 1.25x

can anyone help?! im stuck on this question...

Answers

They have 12 games left

A bag of nuts weighs 3 ounces and costs 50 cents. What is the unit price? Round to the nearest cent.
50 ÷ _____ = _____-
per ounce

Answers

Answer:

50 cents/3 ounces = 16.67 cents/ounce

Step-by-step explanation:

maybe

The answer is 50 by 3 =17

can some one help me

Answers

Answer : x = 15

Explanation :

180-106= 74

74=6x-16

74+16 =6x

90=6x

x=15

Answer:

Step-by-step explanation:

6 x (-(16 degrees)) =

-1.67551608 rad

Mrs. Cerruti uses 7.7 gallons to drive 245 miles. How far could she drive with 10.3 gallons?

Answers

Answer:

about 327.7 miles

Step-by-step explanation:

Proportions :

7.7 gallons / 245 miles = 10.3 gallons / x miles

x is about 327.7 miles

please help ill give brainliest

Answers

Answer:

divide by -3 and reverse it

Step-by-step explanation:

Trust me I got u fam

Answer:

divide by -3 and reverse

(repost) Help Me Please I Will Give Brainliest If Correct!!

Answers

Answer:

the decimal to aproximate is 0.00000000305

Step-by-step explanation:

closest aproximation is 0.000000003

3 x 10-9 the -9 is above the 10

Answer:3.05 x10^9

Step-by-step explanation:

Students in a science class investigated how the speed of sound changes with the air temperature outside. The data are shown in the scatterplot.

Based on the scatterplot, what is the best prediction of the speed of sound when the air temperature is 45°C?

350 m/s

355 m/s

360 m/s

365 m/s

Answers

Answer:360 m/s

Step-by-step explanation:

The best prediction of the speed of sound when the air temperature is 45°C is 360 m/s option third is correct also the graph shows a positive correlation.

What is correlation?

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

As we can see in the graph:

When the air temperature is 10°C the speed of sound is around 337m/s

When the air temperature is 20°C the speed of sound is around 344m/s

When the air temperature is 30°C the speed of sound is around 348m/s

When the air temperature is 40°C the speed of sound is around 355m/s

From the above observation, the air temperature increases the speed of the sound increases.

So when the air temperature reaches 45°C the speed of the sound will be 360 m/s.

Thus, the best prediction of the speed of sound when the air temperature is 45°C is 360 m/s.

Learn more about the correlation here:

brainly.com/question/11705632

#SPJ2

HELP I WILL GIVE BRAINLIEST

Answers

Answer:

u tick the option A then y u r asking??

What type of triangle is this triangle?

acute scalene

obtuse isosceles

obtuse scalene

acute isosceles

Answers

Answer:

Obtuse scalene

Step-by-step explanation:

Answer:

obtuse scalene

Step-by-step explanation:

Scalene means that none of the sides are equal.

Isosceles means that two of the sides are equal.

Obtuse means an angle in the triangle is larger than 90 degrees.

Acute means all angles in the triangle are smaller than 90 degrees.

None of the sides are equal so this triangle has to be scalene and the angle in the bottom right is larger than 90 degrees so this triangle is obtuse.

Hope this helps! :)

Suppose an exponential function, f(x), models the amount of money in a savings account after x years. What is the most appropriate domain of this function?
A. real numbers
B. rational numbers
C. positive integers
D. positive rational numbers

Answers

Answer:

b

Step-by-step explanation:

-ANSWER CORRECTLY

-DO NOT ANSWER IF YOU DO NOT KNOW

-DO NOT COPY AND PASTE YOUR ANSWER

-DO NOT COPY OTHER PEOPLE

Answers

Answer:

the third one, (4,5)

Step-by-step explanation:

4+1 >4

5+1>4

Answer:

it is 4,5

Step-by-step explanation:

when you substitute 4 for n you get this:

n + 1 > 4

4 + 1 = 5

5 > 4

When you substitute 5 for n you get this:

n + 1 > 4

5 + 1 = 6

6 > 4

HOPE THIS HELPS! LEAVE A THANKS AND 5 STAR RATING PLZ

Hello, I would really like some help on this!! Please leave an explanation of how you got your answer! Thank You!

Answers

1a) To find the total area, you must find the area of the triangular part that is missing, then subtract this from the area of the rectangle. For the triangle’s area, you need to know the width (2m) and length (2m). For the rectangle’s area you need to know the width (3m) and length (4m).
1b) the total area is 10m^2 (10 meters squared). This is found by subtracting the triangle (.5x2x2=2) from the rectangle (3x4=12).
I don’t know how to answer this question sorry. I’m just answering so the other person can get brainliest.
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