Mathematics Middle School

Sasha wants to know her average grade on her math tests. She earned a score of 70 on two tests, an 80 on one test, and a 90 on two tests. What is Sasha’s mean score?
A.70
B.75
C.80
D.90

Sasha Wants To Know Her Average Grade On Her Math Tests. She Earned A Score Of 70 On Two Tests, An 80

Answers

Answer 1

Answer: c. 80

Step-by-step explanation:

Answer 2

Answer:

80

Step-by-step explanation:

First add all of the the test results 70+70+80+90+90=400 then you divided by how many test their were so 400/5=80

Related Questions

Omg please help I cannot rn
I did 26 in class, the rest I just can’t
Will reward brainliest for best and complete answer PLEASE!!!!

Answers

I think 24 is 2 I hope this helps

Answer:

17) 1/2b^4

18) x^4/y^2

19) y^3/2x^4

20) 1/9m^2

21) 1/2r

22) 1/4x^5

23) n

24) ½

25) 3/m^7

27) z^3/xy^2

28) 2h^3 k^3/3j^4

29) 4m^2 n/3p

30) 3x^7/yz

Step-by-step explanation:

Sue earns $1,200 per week as a computer operator. Her husband Jim earns $2,000 per week working as a teacher. What are Sue’s monthly earnings?

Answers

Answer:

4800

Step-by-step explanation:

Her monthly earnings are $4,800

[tex]1200 \times 4 = 4800[/tex]

Since she earns $1,200 per week, and there are 4 weeks in a month, you multiply both of the numbers and get the answer.

Hope that helped:)

Which graph represents a proportional relationship?

Answers

the only one that has a straight line and is at 0
The one that has a straight line at zero

Select the slope-intercept form of an equation for a line with y-intercept =−5and slope =2.

Answers

Answer:

Y= -5x+2

I plugged all of the equations in to a coordinate plane

The answer is the second one y=2x-5 because of the straight line equation y=mx+c

Someone please help. I will give brainliest.

Answers

2. -56

1. 35x

3. 60mph

5. 10.33

4. 13.05$

6.5

7. 34

8.14.09

9.1200

10.53

12. 67.0

13. 6.21

14. 32

Hope it helps you!!! :D

Answer:

Step-by-step explanation:

Answer 3-12 please, thank you!

Answers

The answer is nine, 9 + 3 = ( equals ) 12 so weather subtract, or adding, you will get the same answer <3

PLEASE HELP ILL GIVE BRAINLY THIS IS TIMED!

Answers

Answer:

For the first one 6x+7=6x+7 there are infinte solutions while 3(2x+10)=6x−2

there are none

Step-by-step explanation:

Hope i helped ;)

Answer:

#1: infinite

#2: none

Step-by-step explanation:

Select the locations on the number line to plot the points 2, 1, and −4 .

Answers

Answer:

-5-4-3-2-1 0 1 2 3 4 5

Step-by-step explanation:

Step-by-step explanation:

look at the picture

hope it helps you.

Using subsitution, which value of x makes this equation true? x+1/6=1

x=13


x=23


x=56


x=76

Answers

Answer:

5/6

Step-by-step explanation:

ive had this question

5/6
Had same question

PLEASE PLEASE HELP PLEASE LOOK AT THE QUESTION PLZZZZZZZZ

Answers

Answer:

212 °C

Step-by-step explanation:

divide 9 by 5, then multiply that by 100, then add 32 to that.

9 divided by 5 is 1.8 x 10 = 180 + 32 = 212

Hope this helped!!

Michelle's cookie recipe calls for 3/4 cup of brown sugar to make 3 dozen cookies. Which of the following shows an amount of brown sugar that would make the corresponding amount of cookies? Choose all that apply.

Answers

Answer:1/2 cup of sugar makes 1 dozen cookies

1 cup if sugar makes 4 dozen cookies

Step-by-step explanation:

Answer:

1/2 cup of sugar makes 1 dozen cookies so, 1 cup of sugar makes 4 dozen cookies

evaluate 13+ab,when a= 2.5 and b=3.

Answers

13
+
a
b
=
a
b
+
13
13
+
a
b
=
a
b
+
13
a
=
2.5
=
=
2.5
a
=
2.5
=
=
2.5
b
=
3
=
=
3
b
=
3
=
=
3

Answer= 20.5

Please help I need thiss done right noww

Answers

Answer:

-14 is one

sorry i don't have anything eles

Answer:

-14 or [tex]\frac{140}{-10}[/tex] or [tex]\frac{70}{5-10} }[/tex]

Step-by-step explanation:

I hope this helps!!!

I need help ill give brainliest (Only if answer is correct)
8,121 ÷ 8 =
R

Answers

Answer:

1015.125

............................

Answer: 1015.125

Step-by-step explanation:

I NEED HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ I WILL MARK BRAINLEST

Answers

Answer:

EQUAL TO

Step-by-step explanation:

Equal to would be the answer

Explanation: When plugging in numbers and matching the graph with an equation you get that answer therefor the equation is equal to it

Hope I helped! (Would appreciate Brainliest) :)

i need some help again

Answers

A = small box of oranges

B = large box of oranges

3A + 14B = 203

11A + 11B = 220

Take the second equation and divide it by 11 as both A and B have the same coefficient, which will equal:

[tex]\frac{11A+11B}{11}[/tex] = A + B

220 will also have to be divided by 11, giving you 20

A + B = 20

You can cancel out 3A in the first equation by subtracting 3A + 3B = 60 from it.

11B = 143

143/11 = 13

B (large box of oranges) costs $13.

Substitute 13 for B back into one of our equations, in this case 3A + 3B = 60

3A + 3*13 = 60

3A + 39 = 60

3A = 21

A = 7

Thus:

A small box of oranges costs $7, and a large box of oranges costs $13.

Hope this helped! (please brainliest)

Hellppp meeeeeee PLEASEEEEE can y’all help

Answers

Answer:

90

Step-by-step explanation:

11 + 34=45

45+45=90 your welcome

90 is going to be your answer

Max needs to subtract 75.8 – 12.431. He notices that the larger number does not have any digits in the hundredths or thousandths places. How can Max solve this problem? Use what you know about subtracting decimals to tell Max the steps he should take to solve this problem, and help him solve it.

Answers

Answer:

63.369

Step-by-step explanation:

Answer:

63.369

Step-by-step explanation:

you just add two zero's to 75.8 which is 75.800 and then 12.431 stays the same. so therefore, it'll be 75.800 - 12.431 = 63.369. YOU'RE WELCOME :) HOPE I HELPED !!!!

What is the value of 3x + 2y – x when x = -1 and y = 5?

Answers

Answer:

8

Step-by-step explanation:

3x + 2y -x

3*-1 + 2*5

-3+10-(-1)

7 +1 = 8

Hello! (:

3(-1)+2(5)-(-1)

-3+10+1

-3+11

8

Hope it helps!

[tex]SparklingFlower[/tex]

The sum of the interior angles of any triangle is equal to:
A. 90°
B.120°
C. 180°
D.240°
E. 360°
PLEASE give me the answer im really stuck and tried so many times this is for a grade!! Thanks :)

Answers

The answer is c. 180

C sinc eeach angle is 60 degrees so 60x3=180

Anthony is building a cube-shaped box to store some of his smaller crafting supplies. The formula for the surface area of a cube is SA=6s2, where s is the side length of the cube. If he has a total of 200 in.2 of cardboard, can Anthony build a box where s=6 in.?

No, he needs 16 in.2 more cardboard.

No, he needs 232 in.2 more cardboard.

Yes, he will have 56 in.2 of cardboard left over.

Yes, he will have 128 in.2 of cardboard left over

Answers

Answer:

No, he needs 16 inches^2 more cardboard.

Step-by-step explanation:

Take the formula and substitute values into it. 6 * 6^2

Do the exponent first to get 6 * 36, and then complete that to get 216. Since he has 200 inches of cardboard and he would need 216, that means he would need 16 more square inches to make his cube.

No he needs 16 in 2 more cardboard

Answer 2,4,6 please!!!

Answers

EEEEEEEEEEEEEEEEEEEEEEEEEEEEE

HELP PLS ASAPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:- 11/32

Step-by-step explanation:

4 /18 divided by 12 is 0.34375. If you make that a fraction it's -11/32.

Answer:

-33/8

Step-by-step explanation:

You make 4 1/8 a mixed number and it becomes 33/8 and you add a negative.

25 points for this please help with step by step

Answers

a) 20.9

    The mean is calculated by adding up the scores and dividing the total by the number of scores, it is also called the average.

    First, we can count and see there are 11 players (makes sense for a football team). Adding up the ages gives us 19 + 19 + 20 + 20 + 20 + 21 + 22 + 22 + 22 + 22 + 23 = 230. Divide by 11 and we get a mean of of about 20.9!

b) 30

To figure this out, we will set up an equation that looks like this:

[tex]\frac{19 + 19 + 20 + 20 + 20 + 21 + 22 + 22 + 22 + 22 + 23+x}{12} =22[/tex]

And now we will solve:

[multiply both sides by 12] 230 + x = 264

[subtract 130 from both sides] x = 30

So the age of the new player should be 30!

Have a nice day!

    I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

For A its 21

Step-by-step explanation:

add all the numbers which is 105, then divide it by 5 because thats how many numbers we have. the answer is 21

how do I do 6,413-764 show your work, I will give brainliest
(I'm in middle school but i have long term memory and I forget how to do subtraction please help me)

Answers

First you multiply 6 times 413 which is 2478. Then you add -764.

The answer is 1714

Answer:

the answer is 5649

Step-by-step explanation:

Which equation has a solution of s = 3/4?

Answers

Answer:

the answer is that you have to follow these rules.

Step-by-step explanation:

1. Simplify each side of the equation by removing parentheses and combining like terms.

2. Use addition or subtraction to isolate the variable term on one side of the equation.

last but not least

3. Use multiplication or division to solve for the variable.

(4,-3) hope it helps

HELP PLEASE I CAN'T UNDERSTAND I WILL GIVE YOU BRAINLIEST PLEASE HELP

Answers

Answer:

a. 1/27 b.3 1/2

Step-by-step explanation:

a.1/3*1/3*1/3=1/(3^3)=1/27

b.2 1/3*1 1/2*1= 3 1/2

Answer:

a.1/3*1/3*1/3=1/(3^3)=1/27b.2 1/3*1 1/2*1= 3 1/2

Step-by-step explanation:

Brandon buys a radio for $48.81 in a state where the sales tax is 7%.
can someone pls help?

Answers

Answer:

$48.81 x 0.07 = 3.4167

$48.81 + $3.4167 = $52.2267

$52.23

Step-by-step explanation:

The shirt cost $48.81, and the sales tax is 7%. First convert the 7% into a decimal and you get 0.07, and then multiply that to the $48.81. You get left with $3.4167 and then add that to the $48.81 to get $52.2267. But, you have to shorten the numbers to make it look like money by simplifing. So the total is $52.23.

Answer:52.17

Step-by-step explanation: You go to your calculator and type 7% × 48.81

What is the slope of the line, y=5−4x?

Answers

Answer:

(m) =  

ΔY

ΔX

= 0

Step-by-step explanation:

Answer:

the slope is -4

Step-by-step explanation:

You are given the equation y=5-4x. You can put that into slope intercept form.  Slope intercept form is y=mx+b where b is the y intercept and m is the slope. In this equation the slope is -4 and the y intercept is 5. You can  rearrange this equation into slope intercept form. If you do this you will get y=-4x+5.

Hope this helps :)

Please give brainiest

HELP PLEASE WILL BE MARKED BRAINLIEST

Invent a new term for "dwarf planets" and explain why the term is appropriate.

Answers

Answer:

Eris

Step-by-step explanation:

The new term for dwarf planets will be called Eris, after the Greek goddess of discord. Eris's moon is named Dysnomia, the demon goddess of lawlessness and the daughter of Eris.  It is appropriate because the object had been an planet for so long, it deserved a name from Greek or Roman mythology, like other planets.

Answer:

Mini Planets

Step-by-step explanation:

If dwarf planets are small so are mini stuff thats why the term is appropriate.

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