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4 years ago

I’m confused on this one

Mathematics

1 answer:

Nadya [2.5K]4 years ago

5 0

CD and ED are both radii of the circle, meaning they are equal to each other and equal x.

We can use the Pythagorean Theorem:

8^2 + x^2 = (4 + x)^2

64 + x^2 = 16 + 8x + x^2

Subtract x^2 and 16 from both sides:

8x = 48

x = 6

The answer is (B).

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The circular base of a desk lamp has a diameter of 8 inches.what is the lamp bases circumference

Veseljchak [2.6K]

Answer: 25.12 inches

Step-by-step explanation:

We know that the circumference of a circle is given by -

$C= \pi d$ , where d = diameter of the circle.

Given : The circular base of a desk lamp has a diameter of 8 inches.

Then, the circumference of the lamp base is given by :-

$C= \pi (8)\text{ inches}$

Substitute $\pi=3.14$ , we get

$\Rightarrow\ C=(3.14) (8)\text{ inches}$

$\Rightarrow\ C=25.12\text{ inches}$

Hence, the lamp bases circumference= 25.12 inches

4 0

4 years ago

It takes 4 minutes to fil an empty aquarium to a depth of 2/4 meters. what is the unit rate in minutes per meter ? write your an

Kruka [31]

The unit rate in minutes per meter for filling the given aquarium to a depth of 2/4 meters will be 8 minutes per meter.

We have,

Time taken to fill an aquarium to a depth of $\frac{2}{4}$ m = 4 minutes,

So,

Time = 4 minutes,

And,

Depth = $\frac{2}{4}$ m,

Now,

The unit rate in minutes per meter,

So,

We will Now convert given depth fraction,

i.e.

Depth = $\frac{2}{4}$ = 0.5m,

So,

It takes 4 minutes to fill a half meter,

Then,

To fill a meter it will take = $\frac{4}{\frac{2}{4} }$ = 8 minutes

So,

The unit rate in minutes per meter is 8 minutes per meter.

Hence we can say that the unit rate in minutes per meter for filling the given aquarium to a depth of 2/4 meters will be 8 minutes per meter.

Learn more about unit rate click here

brainly.com/question/26059245

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5 0

2 years ago

H (x) = 2x - 1, find h (9)<br> _<br> 3

Tomtit [17]

Answer:

Step-by-step explanation:

2(9)-1

18-1

Hope that helpa

7 0

3 years ago

Which three-dimensional solid can have a vertical cross section that is a circle with a radius of 7?

Advocard [28]

Answer:

Step-by-step explanation:

I just did that question

7 0

3 years ago

Read 2 more answers

Axel runs 10 kilometers in 85 minutes. At the same rate, how many minutes would he take to run 8 kilometers?

Likurg_2 [28]

Answer:

Step-by-step explanation:

85/10= 8.5 (sp he's running each km in 8.5 mins)

8.5x8= 68

7 0

3 years ago