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s344n2d4d5 [400]
3 years ago
6

Calculate the density of a rock that has a mass of 454 g and a volume of 100.0 cm3.

Mathematics
1 answer:
Katena32 [7]3 years ago
6 0

Answer:

4.54 g/cm^3

Step-by-step explanation:

d = m/v

d = 454 g ÷ 100.0 cm^3

d = 4.54 g/cm^3

3 sig figs so this answer is complete

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Find the mean of the following numbers 7 21 2 17 3 13 7 4 9 7 9
Hitman42 [59]

Answer:

9

Step-by-step explanation:

sum of the terms

mean=------------------------------

number of the terms

6 0
3 years ago
The table below shows values for a function.
Evgen [1.6K]

Answer:

d

Step-by-step explanation:

1+1^2=4

2+1=3^2=9

3+1=4^2=16

    ^(times by self)

6 0
3 years ago
Every floor of a 20 storey building is 5m in high. If a lift moves 2m every second, how long will it take to move from 3rd floor
kramer

Answer:

30 seconds

Step-by-step explanation:

→ Work out how many floors it's going to travel

15 - 3 = 12 floors

→ Work out how many meters 12 floors is

12 × 5 = 60 meters

→ Work out how long that will take

60 ÷ 2 = 30 seconds

3 0
3 years ago
Simplify the Expression. [4 + (-8)] x (-7)<br><br> A.) -84 <br> B.) -28<br> C.) 28<br> D.) 84
Helen [10]
C. 28 is the answer
Staring from the brackets we have 4+(-8) we can open the parentheses and get 4-8 and get -4. Now we can open the -7 up and now we have
-4 * -7 = 28
Hope this helps!
6 0
3 years ago
Given that f(x) = -6x and g(x) = x + 4, multiply the functions (f •g)(x).
Westkost [7]

Answer:

(f • g)(x) = -6x² - 24x

Step-by-step explanation:

The expression (f • g)(x) can be written in an expanded form, f(x) • g(x).

(f • g)(x)                         <----- Original expression

f(x) • g(x)                       <----- Rewritten expression

(- 6 x) • (x + 4)               <----- Insert functions

-6x² - 24x                    <----- Multiply -6x and x, and multiply -6x and 4

8 0
2 years ago
Read 2 more answers
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