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4 years ago

Find the length of segment EC

Mathematics

1 answer:

BaLLatris [955]4 years ago

3 0

Step-by-step explanation:

49-30=19, then add 19+16, then you get the answer of 35!

Hope this helps!

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A rectangular swimming Pool measures 50 meters in length and 25 in widths. What are the length and width of the scale drawing

user100 [1]

Answer:

What is the scale

4 0

4 years ago

Read 2 more answers

An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r =

avanturin [10]

Answer:

Step-by-step explanation:

We know that the equation for the depreciation of the car is:

$y=A(1-r)^t$

Where y is the current cost, A is the original cost, r is the rate of depreciation, and t is the time, in years.

We are told that the value of the car now is half of what it originally cost. So:

$y=\frac{1}{2}A$

Substitute this for y:

$\frac{1}{2}A=A(1-r)^t$

We also know that the rate of depreciation is 10% or 0.1. Substitute 0.1 for r:

$\frac{1}{2}A=A(1-0.1)^t$

So, let's solve for t. Divide both sides by A:

$\frac{1}{2}=(1-0.1)^t$

Subtract within the parentheses:

$\frac{1}{2}=(0.9)^t$

Take the natural log of both sides:

$\ln(\frac{1}{2})=\ln((0.9)^t})$

Using the properties of logarithms, we can move the t to the front:

$\ln(\frac{1}{2})=t\ln(0.9)$

Divide both sides by ln(0.9):

$t=\frac{\ln(\frac{1}{2})}{\ln(0.9)}$

Use a calculator. So, the car is approximately:

$t\approx6.6\text{ years old}$

Our answer is D.

And we're done!

7 0

3 years ago

I need help :( on math and I forgot to study!:

irina1246 [14]

Answer:

3 and 4

Step-by-step explanation:

3 0

3 years ago

Aaron can paint a door in 3 hours, and Anna can do the same job in 2 hours. Working together, how many hours will it take them t

Naya [18.7K]

Aaron = 3 hours
Anna = 2 hours

3 divided by 2 = 1.5

It should take 1 hour and 30 minutes for both of them to paint a door

8 0

3 years ago

Find the range & interquartile range of the data set represented by this box plot.

sashaice [31]

Answer:

60 and 25

Step-by-step explanation:

The range is the difference between the maximum value and the minimum value.

maximum value = 125, minimum value = 65

range = 125 - 65 = 60

------------------------------------------

The interquartile range is the difference between the upper quartile Q₃ and the lower quartile Q₁

Q₃ is the value at the right side of the box = 115

Q₁ is the value at the left side of the box = 90

interquartile range = 115 - 90 = 25

4 0

3 years ago