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neonofarm [45]
3 years ago
15

What is the value of (f-3)?

Mathematics
1 answer:
almond37 [142]3 years ago
8 0

Simply substitute the value of

3

given. In other words,

f

(

3

)

is the function of

f

(

x

)

, however, in this case,

x

is

3

f

(

3

)

=

3

(

3

)

−

4

Distribute

3

through the parenthesis

f

(

3

)

=

9

−

4

Simplify

f

(

3

)

=

5

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The mean amount of water in 5 containers is 620 ml the total amount of water in 4 q of the containers is 2750 what is the amount
EleoNora [17]
<span>The <u>correct answer</u> is:

350 ml.

Explanation<span>:

Let x be the amount in the fifth container.

The mean is found by adding all of the amounts together and dividing by the number of containers (in this problem, 5). We know that the total from the other 4 containers is 2750; add this to x, our unknown number. Then we divide by 5 to arrive at our answer of 620.

Algebraically,
</span></span>\frac{2750+x}{5}=620<span><span>

To solve, multiply both sides by 5:
</span></span>\frac{2750+x}{5}\times 5=620\times 5&#10;\\&#10;\\2750+x=3100<span><span>

Subtract 2750 from both sides:
 2750+x-2750=3100-2750
x=350.

There are 350 ml in the fifth container.</span></span>
6 0
3 years ago
Read 2 more answers
The Baldwin family walked of a mile in of an hour. What is their unit rate in miles per hour? (5 points)
Lisa [10]
So walked 4/5 mile in a 4/9 h  so just use the rule of 3 simple 

60 minutes ------ 1 hour
x min. ----------- 4/9 h
--------------------------------
x = 4/9 *60/1 = 240/9 =  26,6 min. 

4/5 mile -------in 26,6 min.
1 mile --------   x min.
-----------------------------
x = 1*26,6/(4/5) = 26,6 /(0,8) = 33,25 min. 

1 mile ..... 33,25 min.
x miles ----- 60 min.
---------------------------
 x = 60/33,25 = 1,8 miles 

so their unit rate in miles per hour will be 1,8 miles / hour 

hope this will help you.
3 0
3 years ago
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dangina [55]
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6 0
3 years ago
Determine which postulate or theorem can be used to prove that<br> ΔSEA= ΔΡΕΝ.
Vikentia [17]

Answer:

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Step-by-step explanation:

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3 0
2 years ago
What is 63 over 75 as a decimal?
marissa [1.9K]

Answer:

0.84

Step-by-step explanation:

Use a calculator.  That would be 0.84.

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Note that 63/75 = ---------- = 21/25.  Multiplying top and bottom by 4 results

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