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3 years ago

Anyones good in gr5 science pls

Mathematics

2 answers:

yawa3891 [41]3 years ago

7 0

Answer:

The answers are in order..

Energy

Vibrates

Air

Wave

Step-by-step explanation:

Q.2

1. B volume

2.C decibel

3. A wave

klio [65]3 years ago

3 0

Answer:

Q 1: the answer is A

Q 2: energy, vibrates, air, and waves

Q 3: #1 and B; #2 and C; #3 and A

Step-by-step explanation:

Explanation for Q 1:

Below the surface, sound waves pass directly through the water and into your head. You're witnessing evidence that water is a good conductor of sound. For starters, sound travels through water five times faster than it travels through air.

Explanation for Q 2:

Sound is a type of energy made by vibrations. When any object vibrates it causes movement in the air. These particles bump into the particles close to them, which makes them vibrate too causing them to bump into more air particles. This movement, called waves, keeps going until they run out of energy. If your ear is within range of the vibrations, you here sound.

Explanation for Q 3:

#1 is a match with B

#2 is a match with C

#3 is a match with A

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In a random sample of 500 people, 160 had blue eyes. In a group of 2500 people, how many would you expect to have blue eyes?

Rzqust [24]

If I'm right, then the answer would be B. 800. Hope I helped!

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3 years ago

Suppose the expression a(b)n models the approximate number of people who registered for a dance program every day since the regi

kodGreya [7K]

There were 2.07 times as much people that applied in the fourth month than in the first month.

<h3>What is an exponential function?</h3>

An exponential function is one that grows or decreases in an exponential manner. Thus, for any exponential function we can write; f(x) = ax^±n. The term a is the initial value x is the rate of change while n is the time elapsed. The positive sign is used for an exponential increase while the negative sign is used for an exponential decrease.

Thus we have;

f(x) = 27(1.2)^4

This shows us that the time elapsed is four months and f(x) = 2.07.

Therefore, there were 2.07 times as much people that applied in the fourth month than in the first month.

Learn more about exponential function:brainly.com/question/11487261?

#SPJ1

4 0

2 years ago

Find the inverse. <br> f(x)= 5x-15

Nikitich [7]

Answer:

y= $\frac{x}{5}$ +3

Step-by-step explanation:

1. Replace f(x) to x and replace x with y.

x=5y-15

2. Then, add 15 to both sides

x+15=5y-15+15

5y=x+15

3. Divide both sides by 5

$\frac{5y}{5}$ = $\frac{x}{5}$ + $\frac{15}{5}$

y= $\frac{x}{5}$ +3

4. Enjoy your answer.

7 0

3 years ago

What are the domain and range of each relation?

ANEK [815]

Answer:

C for the graph:

Domain:{-3,-1,0,3}

Range:{-1,0,1,2,3}

A for the table:

Domain:{-2,0,2,4}

Range:{-3,-1,0}

Step-by-step explanation:

For the graph:

The Domain is moving across the graph horizontally, the Range is moving up the graph vertically.

It has to be C because when moving across it starts with -3 and ends with 3, and no other answer choice says that. Also when moving up, it starts with -1 and ends with 3, and no other choice but C does that.

Now for the table:

The range is the y values and the domain is the x values.

A is the only choice where the y values match the range and the x values match the domain.

Hope this helps

3 0

4 years ago

Will mark brainliest. Which expression is equivalent to -1/4x + 1/2 ?

Monica [59]

C.

If you properly distribute C it will give you the above equation.

1/4 * -x = -1/4x

AND

1/4 * 2 = 1/2

3 0

3 years ago