Mathematics Middle School

TRY beating an answer expert! If 20 articles cost ? 90, then the cost of 9 articles is ?
? 45
? 4.50
? 40.50
? 42

Answers

Answer 1

Answer:

C) $40.50

Step-by-step explanation:

It is given to you that 20 articles cost $90. Find the unit cost of the articles. Divide the total cost of the articles with the amount of articles there are:

$90/(20 articles) = $4.50/article.

Each article costs $4.50 each.

Next, find the cost of 9 articles. Multiply the total amount of articles with the unit cost:

4.50 x 9 = 40.50

C) $40.50 is your answer.

~

Answer 2
i believe the answer is
C

Related Questions

no links or i'll report

Answers

Answer:

D

Step-by-step explanation:

you need to ask as many people as possible you cant just choose one grade. you need to sample multiple grades

Please answer correctly both questions and no links please and thank you! :)

Answers

Answer: 2 and then 1 Step-by-step explanation:

the answer is 2 :)))))))))

:(((( plz helpppp i dont get it

Answers

We could solve problems like these by plugging in values

Let’s start with A

y = 94x

Let’s use 5, 15, 25 from the table

94(5) = 470
94(15) = 1410
94(25) = 2350

Next, B

y = 5x

5(5) = 25

This is wrong

Next, C

y = x + 470

Let’s try 5

475 = 5 + 470

Close, but wrong

Next, D

10 = 5 + 5

This is wrong, so the answer is A.
the answer is y=94x. pls give brainliest

Need help with these 2 problems

What is the verbal expression for q≠3?

What is the verbal expression for n≥6?

Answers

q does not equal to 3
n is greater than or equal to 6
N is greater than it equal to 6

what is the volume of this prism
56.3 cubic units
31.5 cubic units
63.0 cubic units
11.75 cubic units

Answers

Answer:

56.3 cubic units

Which two expressions are equivalent? A. 4(2 + x) and 4•2+2•x, B. 4+2 + x and (4 + 2)+x, C. 4•X + 2 and 4•(x+2), D. 4 / (2 - x) and 4- 2 / X?

Answers

Answer:

B

Step-by-step explanation:

Answer is B

To something it up you can basically replace the x with any number and they will all come out as different sums except for b

4=32b
solve for b WILL GIVE BRAINLIEST

Answers

Answer:

1/8

Step-by-step explanation:

[tex]32b \div 32 = 4 \div 32 \\ [/tex]

need help
Which is the verbal expression for k≤10?

Answers

Answer:

A number k is less than or equal to 10

Step-by-step explanation:

Answer:

The number k is less than or equal to ten

Step-by-step explanation:

prime factoring
78 (please show ur factor tree i need it)

Answers

Answer:

---

Step-by-step explanation:

     78

1     |     78

2    |     39

3    |     26

6    |     13

So the factors are 1, 2, 3, 6, 13, 26, 39, and 78

---

hope it helps

pls help no links pls

Answers

The answer for that question is D I hoped it helped!
The sweet to this question is D

You work on a problem calculating either area or volume. Your answer is 210 ft3. Did you work on an area or volume problem?

Answers

Answer:

Volume

Step-by-step explanation:

ft^3 is cubic foot. Cubic foot is used for volume of a cube

What are the coordinates of the vertices of a rectangle with an perimeter of 12 units and an area of 5 sq. units.

Answers

Answer: The perimeter of the rectangle is: P = 2( w + L) = 2 ( 8+5) = 26 units

The area of the rectangle is A = L w, A = 8 x 5 = 40 units to the 2nd power

Step-by-step explanation:

In order to solve this problem you need to find the distances between the vertices. By inspection the points (5,3) and (5,-2) form one the of the rectangle w = √ ( 5-5)2 + ( -2-3)2 = 5

The length can be obtained by finding distance between the points (5,3) and ( -3,3),

L = √(3-3)2+(-3-5)2 = 8

= 26 units

The perimeter of the rectangle is: P = 2( w + L) = 2 ( 8+5) = 26 units

The rectangle is the quadrilateral with 4 right angles. It could also be defined as, an equiangular quadrilateral, since equiangular means that the all of this angles are = (360°/4 = 90°); and the parallelogram containing a right angle. A rectangle with 4 sides of equal length is a square. The term oblong is occasionally used to refer to a non square rectangle.

The area of rectangle is A = L w, A = 8 x 5 = 40 units to the 2nd power

In order to solve this question you want to find the distances between the vertices. By inspection the points (5,3) and (5,-2) form 1 the of the rectangle w = √ ( 5-5)2 + ( -2-3)2 = 5

The length can be obtained by finding distance between the points (5,3) and ( -3,3),

L = √(3-3)2+(-3-5)2 = 8

The perimeter of rectangle is: P = 2( w + L) = 2 ( 8+5) = 26 units

Learn more about rectangle here https://brainly.com/question/15019502

#SPJ2

I got 240 so I just need to double-check that. I also need to explain why it's 240 mins? Maybe an expression? Help

Answers

Let’s find the slope of this equation

Slope formula:

(y2-y1/x2-x1)

Plug things in

(-3000-0/20-0)

(-3000/20)

Condense the fraction

Slope = -150 or lowering 150 feet per minute.

Let’s get point slope form, add in some points.

Point slope form:

y - y1 = -150(x - x1)

Plug things in

y - (-3000) = -150(x - 20)

y + 3000 = -150x + 3000

Subtract 3009

y = -150x

Plug in -36000 for y

(-36000) = -150x

Divide by -150

x = 240

You are correct, it took 240 minutes.

answer the 4 simple questions ( will give thanks, 5 stars, and brainliest )

Answers

1. x<10
2.x>5
3.x> or equal to 3
4.x

Please help me I will give brainliest

Answers

Answer:

1st one

Step-by-step explanation:

The length of the spring is 7.98 cm with a weight of 34 grams attached to it.

Jeff bought a bottle of water for $2. He also bought some hot dogs for $3 each. Jeff did not spend more than $14 on the hot dogs and the bottle of water. Witch inequality can be used to find h, the number of hot dogs that jeff could have bought. (If you answer I'll give you a brainilst;))

F. 3h-2<≤4
G. 3h+2≤14
H. 3H-2≥14
J. 3h+2≥14

Answers

Answer:

3H - 2 ≤ 14 I believe.

If i'm wrong forgive me

Answer:

G: 3h+2[tex]\leq \\[/tex]14

Step-by-step explanation:

He could've spent 14 dollars, or less, so the sign is the less than, equal to sign. The 3h represents the cost of hot dogs times the number of hot dogs. The represents the cost of the water bottle. It is addition because he purchased both the water bottle and hot dogs.

The graph shows a line of best fit because the points are plotted evenly above and below the line.
The graph shows a line of best fit because there is a straight line.
The graph shows a line of best fit because the association is zero.
The graph shows a line of best fit because the points fit around the line.

Answers

it should be A: the points are plotted evenly above and below

Find the total area of the composite shape below.

A. 180.48 sq ft
B. 280.96 sq ft
C. 130.24 sq ft
D. 105.12 sq ft

Answers

Answer:

A 180.48sqft

Step-by-step explanation

Answer is A, to find the area you obviously have to multiply

PLEASE HELP ME QUICK DUDES!!

Answers

Answer:

See graph attached

Step-by-step explanation:

HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPP ME!!!!!!!!!!!!!

Answers

Answer:

i think that is 4

Step-by-step explanation:

fydxudugxxfjg

V = l • h • w

V = 4 • 1 • 1 = 4

The graph shows the fisrt four pattern oredered pairs foremed by the corresponding terms of two paterrens

Answers

Answer:

Gaf

Step-by-step explanation:

Can you please explain how you got the answer? Thank you.

Answers

Answer:

The answer is 3386880

Step-by-step explanation:

Volume = 1/3a²h

Volume = 1/3*252²*160

Volume = 1/3*63504*160

Volume = 21168*160

Volume = 3386880 yards³

Please answer correct with an explanation thanks!

Answers

Answer:

17/50

Step-by-step explanation:

P(red or purple) = number of red or purple / total

There are 7 red rings and 10 purple rings

                          = (7+10) / 50

                          = 17/50

17/50
There are 7 red rings, and there are 10 purple rings, If you add all the rings together, it is out of 50, therefore it is 17/50

Help plz .......................

Answers

Step-by-step explanation:

hope this helps ..........

Answer:

Look at the image.

Step-by-step explanation:

0.25(4x - 24) + x = 14

x - 6 + x = 14

2x - 6 = 14

2x - 6 + 6 = 14 + 6

2x = 20

2x ÷ 2 = 20 ÷ 2

x = 10

Help me pleaseeeeeee

Answers

everything except the last two, I think.

Solve for brainliest
3x + 2y = -13
3x + 4y = 1

Answers

Answer:

x=-4

y=3

Step-by-step explanation:

3x=-1

x=-4

-4y=-1

y=3

Hope helps you :3

Answer:

Point form: (-9,7)

Equation form: x=-9, y=7

Step-by-step explanation:

8) find the volume of a prism

Answers

Answer:

I may be wrong but A

Step-by-step explanation:

Sara purchased a porcelain sculpture that is in the shape of a square pyramid. The slant height is 6.1 inches and the base 6.4 inches. Find the surface area. Round to the nearest tenth.
I need help asap

Answers

Answer:

119.04

Step-by-step explanation:

Help question is in the pic PLEASE EXPLAIN HOW YOU GOT THE ANSWER!

Answers

Answer:

Correct me if im wrong but i believe you just multiply all the sides by each other :)

Step-by-step explanation:

Answer:

i think you just multiply all the sides by each other in the order of length*width*height

Step-by-step explanation:

** means times (multiplication)

PLEASEE ANSWER ALL THESE I NEED IT LIKE RIGHT NOW NO LINKS!!!

1) 5^0 =1
2) (-4)^0 = 1
3) (1/3)^0 = 1
4) 3^-3 = 1/3^3 = 1/(3 x 3 x 3) =1/27
5) (-2) ^-5 1/2^5 = 1/32
6) (10^5)(10^6) = 10^11
7) (1/4)^8 (1/4)^-5
8) (-6)^2 (-6)^0 = -6^2
9) 0^0 = undefined, cannot evaluate
10) 0^-1 = 1/0^1 = undefined
11) 4^2/4^3
12) 5^3/5^6
13) (2/3)^-4
14) 9^-8 9^-2

Answers

Answer:

7) (1/4)^8 (1/4)^-5 = 1/4^3

11) 4^2/4^3 = 1/4

12) 1/5^3

13) 2^-4/3^-4

14) 9^-10

Step-by-step explanation:

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