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2 years ago

At noon, a tank contained 10 in. of water. After several hours, it contained 7 in. of water. What is the

Mathematics

1 answer:

Olin [163]2 years ago

5 0

-30% answer is right because it lost 3 inches and 30 percent of 10 is 3.

Answer: -30%

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Pls help will give brainliest and 5star plss

guajiro [1.7K]

For 3. It is the fourth choice. This is because angle DGF is vertical angle and thus equal to angle EGB. Then angle BGF is supplementary to this angle.
So your answer is EGB+BGF=180

For 4. It is the first choice of 62 ft. It is the midpoint so is half the total line segment.

6 0

3 years ago

If there were 80 points scored overall, how many of them were scored by Bridgette? she scored 5% of the points

Simora [160]

Answer: she scored 4 points

Step-by-step explanation: 5% of 80=4

;-----------;

6 0

3 years ago

Read 2 more answers

Find the value of x such that the area of a triangle whose vertices have coordinates (6, 5), (8, 2) and (x, 11) is 15 square uni

Serjik [45]

Answer:

$x =12\ or\ -8$

Step-by-step explanation:

Given

$(x_1,y_1) = (6,5)$

$(x_2,y_2) = (8,2)$

$(x_3,y_3) = (x,11)$

$Area = 15$

Required

Find x

The area is calculated as thus:

$Area = \frac{1}{2}|x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2)|$

Substitute values

$15 = \frac{1}{2}|6*(2 - 11) + 8*(11 - 5) + x(5 - 2)|$

$15 = \frac{1}{2}|6*(-9) + 8*(6) + x(3)|$

$15 = \frac{1}{2}|-54 + 48 + 3x|$

$15 = \frac{1}{2}|-6 + 3x|$

Multiply through by 2

$2 * 15 = \frac{1}{2}|-6 + 3x| * 2$

$30 = |-6 + 3x|$

Remove absolute sign

$30 = -6 + 3x\ or\ -30 = -6 + 3x$

Add 6 to both sides

$36 = 3x\ or\ -24 = 3x$

Divide by 3

$12 = x\ or\ -8 = x$

$x =12\ or\ -8$

<em>So, the coordinates are (-8, 11) or (12,11)</em>

3 0

2 years ago

Item 3

Zina [86]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

How to find the averge

sasho [114]

If you mean average, then it's quite simple.
Usually when you want to find the average of something, you add them up all together and divide by how many there are.

For example, the numbers:
12, 69, 35, 67, and 2.

Steps:
1.) Add them. 12 + 69 + 35 + 67 + 2 = 185
2.) 185 divided by 5.
3.) Answer: 37

5 0

3 years ago