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masya89 [10]
3 years ago
13

Mary has some trading cards. Julie has 3 times as many trading cards as Mary. They have 36 trading cards in all. Which of these

equations represents their trading card collection? A) 3x=36 B)x+3=36. C)X+3x=36 D)3x+36=x
Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
3 0

Answer:

C. X+3x=36

Step-by-step explanation:

1. If you add the x's to get: 4x=36

2. Do division to get 9.

3. if you plug in 9 in the original,and multiply: 9+27=36

4. There's your answer..... and i ran out of steps.

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$16 for 4 pounds $1 for 4 ounces are the rates equivalent
Kazeer [188]
So given the values above, if 4 pounds costs $16, this would mean that per dollar or $1 is 0.25 pounds. And the equivalent of 0.25 pounds to ounces is 4. Therefore, the given rates above are equivalent. Hope this answers your question. Have a great day!
7 0
4 years ago
A rope is cut into three pieces of different lengths. The first piece is of length x meters, The length of the second piece is 2
Iteru [2.4K]

Answer:

first piece = 5 m

second piece = 2(5) + 2 = 12 m

third piece = 3(2x + 2) = 6(5) + 6 = 36 m

Step-by-step explanation:

The question is incomplete, the length of the actual rope is unknown but it should be given . Let us assume the length of the rope is 53 meters.

The rope is cut into 3 pieces of different length.

first piece = x

second piece = 2x + 2

third piece = 3(2x + 2) = 6x + 6

Since the length of the actual rope is assumed to be 53 meters .The length of the first piece, second piece and third piece can be calculated as follows.

we add the length of the pieces to get the actual length of each piece. Therefore,

x + 2x + 2 + 6x + 6 = 53

collect like terms

9x + 8 = 53

9x = 53 - 8

9x = 45

x = 45/9

x = 5 meters

first piece = 5 m

second piece = 2(5) + 2 = 12 m

third piece = 3(2x + 2) = 6(5) + 6 = 36 m

5 0
4 years ago
The perimeter of a rectangle is 80 inches. The length is 4 inches longer than twice the width. What are the dimensions of the re
Ganezh [65]

Answer:

<h3>length = 28 cm</h3><h3>width = 12 cm</h3>

Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

where

l is the length

w is the width

From the question

Perimeter = 80cm

The length is 4 inches longer than twice the width is written as

l = 4 + 2w

Substitute this into the formula and solve for the width

That's

80 = 2( 4 + 2w) + 2w

80 = 8 + 4w + 2w

6w = 80 - 8

6w = 72

Divide both sides by 6

w = 12 cm

Substitute w = 12 cm into l = 4 + 2w

That's

l = 4 + 2(12)

l = 4 + 24

l = 28cm

Therefore

length = 28 cm

width = 12 cm

Hope this helps you

7 0
3 years ago
Doug paid a maturity value of ​$5015.52 on a​ 2-year note with annual interest of 8​% ​(or 0.08​). Use the formula Upper M equal
Gnesinka [82]

Answer: Give me an example

Step-by-step explanation:

6 0
4 years ago
Image P is shown in the coordinate grid Image P is translated 2.5 units to the right and 3.5 units up to create image P'.
Ksju [112]

Answer:

Here we do not have the image P, but let's solve this in a general way.

Suppose that we have a point A (x,y)

If we translate the point A n units horizontally (where n can be positive, translation to the right, or negative translation to the left.)

The new point will be (x + n, y)

if we translate the point m units vertically (if m is positive the translation is upwards, if m is negative the translation is downwards), the new point will be (x + n, y + m)

Then if our figure was p (x, y)

The new figure is p(x + 2.5, y + 3.5)

So for every point in the figure, we need to add 2.5 to the x component, and 3.5 to the y-component.

6 0
3 years ago
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