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r-ruslan [8.4K]
3 years ago
12

If X > 0 and y > 0 , then which quadrant holds the solutions ?

Mathematics
1 answer:
pantera1 [17]3 years ago
8 0

Answer:

First Quadrant

Step-by-step explanation:

The quadrant in which both x and y are greater than 0 is the First Quadrant.

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Calculate the amount of paint needed to cover the following door:
love history [14]

Answer:

Step-by-step explanation:

The door is shape is a combination of a rectangle and a semicircle with a square window.

Area of the door = Area of rectangle + area of a semi circle

Area of a rectangle = Length * Width (LW)

area of a semicircle = πr²/2 where r is the radius of the semi circle.

Given the length of the rectangle = 2m and its width = 1m

Area of rectangle = 2*1 = 2m²

Given the radius of the semicircle = 1/2 m

Area of the semi circle = π(0.5)²/2

= 0.25π/2

= 0.785/2

Area of the semicircle= 0.3925m²

Area of the door = 2+0.3925

Area of the door = 2.3925m²

Since we are not to paint the window, we will subtract the area of the window from the total area.

Area of the window = area of a square = 0.2*0.2

= 0.04m²

Area to be painted = Area of door - Area of the square

Area to be painted = 2.3925m² - 0.04m²

Area to be painted  = 2.3535m²

Note that there was no enough information for us to calculate the amount of paint needed but knowing the area of the part to be painted can guide us.

4 0
3 years ago
Write the following as a mathematical expression with one variable.
balu736 [363]

Answer:

Step-by-step explanation:

2l-3w

4 0
3 years ago
Match each drawing on the left with its geometric notation on the right. Some of the answer choices on the right may not be used
devlian [24]

Answer:

I linked an image!

4 0
2 years ago
Which answer is the approximate standard deviation of the data set?
Ierofanga [76]

Answer:  A. 6.5

Step-by-step explanation:

Here, the given set = { 15, 19 3, 12, 17, 2, 2, 8}

Mean, \overline{ x} = \frac{15+19+3+12+17+2+2+8}{8} = \frac{78}{8} = 9.75

Number of elements, n = 8

\frac{\sum (|x-\overline{x}|)^2}{n}=42.4375

Thus, the standard deviation, \sigma =\frac{\sqrt{\sum(|x-\overline{x}|)^2} }{n}=\sqrt{\frac{339.5}{8}}=\sqrt{42.4375} = 6.51440711\approx 6.5

⇒ Option A is correct.

4 0
3 years ago
Read 2 more answers
A savings account with $500 now has $120.​
Zepler [3.9K]

Answer:

They spent 380.

$500-$120=$380.

4 0
3 years ago
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