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navik [9.2K]
3 years ago
14

Write an algebraic equation for each question below and then solve the equation.

Mathematics
1 answer:
irina [24]3 years ago
8 0

Let the original number of rara coins that Jerry had back then be x.

now if he sold 50 rare coins, the coins left will be x - 50

  • x - 50 = 225

  • x = 225 + 50

  • x = 275
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What is value of the x-coordinate is nine units to the left of (5 -8)
8_murik_8 [283]
(-4,-8)

Hope this helped!

3 0
4 years ago
Simplify the expression:<br> 2(5 + 5q) =<br> What’s the answer
Serggg [28]

Answer:

10 + 10q

Step-by-step explanation:

2(5 + 5q) =

Distribute

2*5 + 2*5q

10 + 10q

7 0
4 years ago
Read 2 more answers
Pool #1 is a rectangle that is 14 feet wide. The length is (14– 8)2ft.
kap26 [50]

Answer: the length is 6 feet. The width is 2 feet

Step-by-step explanation:

The garden pool is rectangular in shape.

Let L represent the length of the rectangular garden.

Let W represent the width of the rectangular garden.

The area of a rectangle is expressed as L× W. The area of the rectangular garden pond is 12ft^2. It means that

L× W = 12 - - - - - - - - - - 1

The length of the pool needs to be 2ft more than twice that width. This means that

L = 2W + 2 - - - - - - - - - - - 2

Substituting equation 2 into equation 1, it becomes

W(2W + 2) = 12

2W^2 + 2W = 12

2W^2 + 2W - 12 = 0

W^2 + W - 6 = 0

W^2 + 3W - 2W - 6 = 0

W(W + 3) - 2(W + 3) = 0

W - 2 = 0 or W + 3 = 0

W = 2 or W = - 3

Since the Width cannot be negative, then the width is 2 feet

Substituting W = 2 into equation 2. It becomes

L = 2×2 + 2 = 6 feet

8 0
3 years ago
Mrs. Martinez had $150.55 in her checking account. She wrote checks for the following amounts: $45.76, $35.00, and $79.82. What
musickatia [10]

Answer:

160.58

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
Y is inversely proportional to the cube of x if y = 7 when x=4 what is y when x is 5
Black_prince [1.1K]

Answer:

y = 3.584

Step-by-step explanation:

Given

Variation = Inverse Proportional

When y = 7, x = 4

Required

Find y when x = 5

First, we need to represent the variation.

y varies inversely proportional to x³

This implies that

y ~ 1/x³

Convert variation to equation

y = k/x³

Make k the subject

k = x³y

When y = 7, x = 4

This gives:

k = 4³ * 7

k = 64 * 7

k = 448

To determine the value of y when x = 5;

We make use of y = k/x³

Substitute 5 for x and 448 for k

y = 448/5³

y = 448/125

y = 3.584

6 0
3 years ago
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