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oee [108]
3 years ago
8

Solve by substitution 3x+4y=10y=-2x+10​

Mathematics
1 answer:
mixer [17]3 years ago
6 0

Answer:

Plug in and solve

Step-by-step explanation:

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Rewrite the quadratic y=3(x-2)^2-7 in standard form​
DochEvi [55]

Answer:

The answer is

y=3/(x-2)^5

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2 years ago
Which of these expressions can be used to calculate the monthly payment for
Mandarinka [93]

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1326632.865

Step-by-step explanation:

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3 years ago
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What is the area of the 50ft by 100ft yard?
mario62 [17]

Answer: 4410 ft^2

Step-by-step explanation:

To find the area of a square or rectangle, all you need to do is multiply the length times the width:

L × W = A

The lengh is 100, and the width is 50

100 × 50 = 5000

However, in this problem, we also have other shapes in the rectangle. To find the area of JUST the green, we need to subtract the areas of the two circles and small blue rectangle.

First, let's get the two circles over with. To find the area of a circle, use this formula:

A = πr^2      r is the radius, which in this case, is 6

A = π6^2

A = 113       This isn't the exact answer, the exact answer would be 113.0973...

Now let's multiply the area of one of those circles by 2, since we have 2 circles:

113 × 2 = 226

Finally, we have to find the area of the blue rectangle. This is simple, just use the formula from the very beginning:

26 × 14 = 364

The last thing to do is to subtract the areas of the two circles and blue rectangle from the area of the entire thing:

5000 - (226 + 364) = 4410 ft^2

4 0
3 years ago
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Area of the living room is 180 square feet and the perimeter is 54 feet. What are the dimensions in feet?
dolphi86 [110]

Answer.....15ft by 12ft

Explanation:

Area = Length × Width

180 = LW....make W the subject of formula

;W = 180/L

Perimeter = 2L + 2W

54 = 2L + 2(180/L)...sub W with the formula above...

then simplify the equation and obtain...

2L^2 - 27L + 180 = 0....then solve using the quadratic formula....then obtain..

;L = 15ft....after obtaining L = 15...then substitute into the W = 180/L equation...

where W = 180/15 = 12ft

there you have...Length = 15ft and Width = 12ft

5 0
3 years ago
Figures are similar. Find x.
katrin [286]

Answer:

24.3

Step-by-step explanation:

18/20 = x/20 (similar triangles)

8 0
3 years ago
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