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pav-90 [236]
3 years ago
8

Which of the following is NOT a method for solving a system of equations?

Mathematics
1 answer:
WITCHER [35]3 years ago
6 0

Answer: b. graphing

Step-by-step explanation:

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Juan plans to put a fence around his rectangular garden. The length of
Lelechka [254]

Answer: the length of fencing that Juan needs to surround the entire garden is 6x - 4

Step-by-step explanation:

The perimeter of a plane shape is the distance round the shape. The garden is rectangular in shape.

The formula for determining the perimeter of a rectangle is expressed as

Perimeter = 2(L + W)

The length of the garden is (2x – 5) feet and the width of the garden is (x + 3) feet. The length of fencing that Juan would need is

2[(2x - 5) + (x + 3)]

= 2(2x + x - 5 + 3)

= 2(3x - 2)

= 6x - 4

3 0
3 years ago
What are the coordinates of the point on the directed line segment from (4, -3)(4,−3) to (9, -8)(9,−8) that partitions the segme
jekas [21]

Answer:

  (7, -6)

Step-by-step explanation:

You want to find point X on the segment from A to B such that ...

  (X -A)/(B -X) = 3/2

  2(X -A) = 3(B -X) . . . . . . cross multiply

  2X -2A = 3B -3X . . . . . eliminate parentheses

  5X = 2A +3B . . . . . . . . add 3X +2A

  X = (2A +3B)/5 . . . . . . . divide by 5

Filling in the given points for A and B, we have ...

  X = (2(4, -3) +3(9, -8))/5 = (8+27, -6-24)/5 = (35, -30)/5

  X = (7, -6)

The point that divides the segment in the proportions 3:2 is (7, -6).

8 0
4 years ago
What is the sum of the areas of circle C and circle D?
Yanka [14]

Answer:

98pi

Step-by-step explanation:

Area of circle: pi(r)^2

A1=pi(7)^2

A2=pi(7)^2

A2+A1=98pi

4 0
3 years ago
Michael spends an average of $120 per month going out to lunch and dinner. If he can cut that
expeople1 [14]

Answer:

If he spends $120 dollars a month, and he cut's that down to $50 a month, we should create a pattern to visualize the months.

Step-by-step explanation:

120- 50= 70 ($70 saved each month)

Month 1- $70 saved total

Month 2- $140 saved total

Month 3- $210 saved total

Month 4- $280 saved total

Month 5- $350 saved total

Month 6- $420 saved total

It takes 6 months to get 400 saved. We could also divide to get

5.714285, but it would takes 6 months before reaching the goal. :)

6 0
4 years ago
Suppose y varies directly as x and y = 20 when x = 8. What is the value ofy whenx = 12?
AnnZ [28]

Answer:

y = 30

Step-by-step explanation:

Use the direct variation equation, y = kx

Plug in 20 as y and 8 as x, then solve for k:

y = kx

20 = k(8)

2.5 = k

So, the equation is y = 2.5x

Plug in 12 as x, and solve for y:

y = 2.5x

y = 2.5(12)

y = 30

So, when x = 12, y = 30

7 0
3 years ago
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