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3 years ago

An equation ___ has one solution A. Always B. Sometimes C. Never

Mathematics

1 answer:

Doss [256]3 years ago

4 0

im am pretty sure it is b.sometimes because an equation can have more then one answer

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How many meters away is a cliff if an echo is heard 0.500 s after the original sound? Assume that sound traveled at 343 m/s on t

yaroslaw [1]

I believe the answer would be 171.5 because the 343m/s is the speed but it only lasted for half a second so divide 343 by 2 and you get 171.5. hope this helps

7 0

3 years ago

A 30° 60° 90° triangle is shown below. Find the length of the side labeled y.

bulgar [2K]

Answer:

Part 1) $y=3\ units$

Part 2) The length of the hypotenuse is 6 units

Step-by-step explanation:

Part 1) we know that

In the right triangle of the figure

$sin(60^o)=\frac{y}{2\sqrt{3}}$ ----> by SOH (opposite side divided by the hypotenuse)

solve for y

$y=sin(60^o)2\sqrt{3}$

Remember that

$sin(60^o)=\frac{\sqrt{3}}{2}$

substitute

$y=(\frac{\sqrt{3}}{2})2\sqrt{3}$

$y=3\ units$

Part 2)

Let

h ----> the length of the hypotenuse

we know that

In the right triangle of the figure

$sin(45^o)=\frac{3\sqrt{2}}{h}$ ----> by SOH (opposite side divided by the hypotenuse)

$h=\frac{3\sqrt{2}}{sin(45^o)}$

Remember that

$sin(45^o)=\frac{\sqrt{2}}{2}$

substitute

$h=3\sqrt{2}:\frac{\sqrt{2}}{2}$

$h=6\ units$

7 0

3 years ago

A sample of n = 8 scores has ss = 50. if these same scores were a population, then the ss value for the population would be ____

katen-ka-za [31]

<span>A sample of n=8 has an ss=50 if these were a population the ss value of the population would be (50/8) of the sample = 6.25 of sample. Usually, ss value of the population i s calculated by dividing ss by the sample values. This is the way to calculate ss value of the population.</span>

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4 years ago

Read 2 more answers

How do I simplify 10q-2q+3-9?

Viktor [21]

Answer:

The answer should be 8q-6 i think i tried

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Find the length of the radius C