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Vlada [557]
3 years ago
14

Show work , simplifying expression

Mathematics
1 answer:
choli [55]3 years ago
6 0

Answer:

100

Step-by-step explanation:

Order of Operations: BPEMDAS

Step 1: Define

x(x - y)²

x = 4

y = 9

Step 2: Substitute and Evaluate

4(4 - 9)²

4(-5)²

4(25)

100

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A 3-mi cab ride cost $7.90. A 9-mi cab ride cost $18.70​
Sauron [17]

Answer:

first part: y=2.63x

second part: y=2.08x

Step-by-step explanation:

1) 7.90 / 3 = 2.633333 (I rounded to 2.63)

2) 18.70 / 9 = 2.07777 (I rounded to 2.08)

I hope this what you were asking

3 0
3 years ago
In a box of marbles, the ratio of red marbles to total marbles is 2:5. the ratio of green marbles to total marbles is 3:10. if t
STALIN [3.7K]
Ratio:

Red : Total 
  2   :    5
 (x2)    (x2)
  4   :   10

Green : Total
  3   :       10

Total of red and green marbles = 4 + 3 = 7

Blue marbles = 10 - 7 = 3

10 parts = 40 marbles
1 part = 40 ÷ 10 = 4
3 parts = 4 x 3 = 12

Answer: There are 12 blue marbles.
7 0
3 years ago
I NEED HELP ON THIS CONSTRUCTED RESPONSE! :(
Simora [160]

Answer:

<em>x = -10</em>

Step-by-step explanation:

(9/2)(8 - x) + 36 = 102 - (5/2)(3x + 24)

Multiply both sides by 2.

9(8 - x) + 2 * 36 = 2 * 102 - 5(3x + 24)

Distribute on both sides.

72 - 9x + 72 = 204 - 15x - 120

Combine like terms on each side.

144 - 9x = 84 - 15x

Subtract 144 from both sides. Add 15x to both sides.

6x = -60

Divide both sides by 6.

x = -10

7 0
3 years ago
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gayaneshka [121]
How can i help you?
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4 0
3 years ago
The temperature was 10°F. It dropped so that the temperature was 0°F. ​___°F represents the change in temperature. Is it 10 or -
yan [13]

Answer:

Change = - 10^{\circ}F

Step-by-step explanation:

Given

Initial = 10^{\circ}F

New = 0^{\circ}F

Required

Determine the change in temperature

This is calculated by:

Change = New - Initial

Substitute values for New and Initial Temperatures

Change = 0^{\circ}F - 10^{\circ}F

Change = - 10^{\circ}F

Hence, the change in temperature is: - 10^{\circ}F

4 0
3 years ago
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