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2 years ago

Select all the correct answers.

Mathematics

1 answer:

dimulka [17.4K]2 years ago

8 0

Answer:

The measure of the Reference angle is 30vdegrees and the second answer should be Tan(0)=1

Step-by-step explanation:

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a village having a population of 4000, requires 150 litres of water per head per day. it has a tank measuring 20m x 15m x 6m. fo

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The water will last for 3 days

Solution:

Given that, village having a population of 4000, requires 150 litres of water per head per day

Let us first find the volume of tank

The tank measuring 20m x 15m x 6m

Length = 20 m

Breadth = 15 m

Height = 6 m

$volume\ of\ tank = length \times breadth \times height$

$Volume\ of\ tank = 20 \times 15 \times 6 = 1800$

Thus volume of tank is 1800 cubic meter

From given,

Water required per person per day = 150 liters

Therefore, water required for 4000 people per day is:

$\rightarrow 4000 \times 150 = 600000 \text{ liters }$

Convert to meters

$600000 \text{ liters } = 600000 \times \frac{1}{1000}\ m^3\\\\600000 \text{ liters } = 600\ m^3$

How many days will the water of this tank last?

$\text{Number of days water will last } = \frac{\text{volume of tank}}{\text{total water required per day}}$

$\text{Number of days water will last } = \frac{1800}{600} = 3$

Thus the water will last for 3 days

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2 years ago

Write 2.4 x 10 to the power of -3 in standard form

fomenos

Answer:

Step-by-step explanation:

$2.4 \times10^{-3}=\frac{24}{10} \times \frac{1}{10^3} =\frac{24}{10^4} =\frac{24}{10000} =0.0024$

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2 years ago

Brian has reduced his cholesterol level by 8% after his last check up. If his original level was 200, what is his cholesterol le

s2008m [1.1K]

Answer:

B. 184

Step-by-step explanation:

A proportion is an easy way to solve this:

$\frac{100\%}{200} = \frac{92\%}{x} \\ 100x = 92(200) \\ x = 92(2) \\ x = 184$

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3 years ago

For what value of x will the line passing through the following pairs of points be

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The answer is g(x)= 5x- 19

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1 year ago

What is the solution to the following equation? 5 + 3 (y - 4) = 4y +10

Umnica [9.8K]

Answer:

5 +3(y-4) = 4y +10

5 + 3y -12= 4y +10

-7 +3y = 4y + 10

3y - 4y = 10 + 7

-y = 17

y= -17

8 0

1 year ago

Read 2 more answers