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Dima020 [189]
3 years ago
7

If a solid cube has a density of 6.3 grams per millimeter and a volume of 30 millimeters, how much is it's mass?

Mathematics
1 answer:
agasfer [191]3 years ago
8 0

density= mass/volume

mass= densiy x volume

mass= 6.3 g/mm^3 x 30mm^3= 189 g

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Solve each of these equations.<br><br> 1. 2(x+5)=3x+1<br><br> 2. 3y−4=6−2y<br><br> 3. 3(n+2)=9(6−n)
Anastasy [175]

Answer:

1. x=9

2. y=2

3. n=4

hello just helping out!

6 0
3 years ago
Haruka hiked several kilometers in the morning. She hiked only 666 kilometers in the afternoon, which was 25\%25%25, percent les
katen-ka-za [31]

Answer:

She hiked 1,554 kilometers in all.

Step-by-step explanation:

Let the hiking kilometers for morning be x

Given that:

Hiking kilometers in afternoon = 666

According to given condition that afternoon kilometers are 25% less than morning:

x = 666 + 25% of x

By simplifying:

x = 666 + 0.25x

x - 0.25x = 666

0.75x = 666

Dividing both sides by 0.75 we get:

x = 666/0.75

x = 888 kilometers

She hiked 888 kilometers in morning

And

Total = 888 + 666 =1554 km

i hope it will help you!

3 0
3 years ago
Read 2 more answers
PLEASE HURRY<br> WILL GIVE BRAINLIEST
fiasKO [112]
The answer would be (8pi +12) in^2
This is because to solve for the semicircle the equation is:
1/2*pi*r^2 1/2*pi*16
And the equation for the triangle is:
1/2*hb*h 1/2*8*3
(Plz mark Brainliest have a nice day)
3 0
3 years ago
What is the perimeter of this triangle?
salantis [7]

3w-15 is the answer ,

w + w + w-15

( combime like terms )

= 3w - 15


6 0
3 years ago
PLEASE HELP! i have by the end of the day to turn this in. PLEASE DONT GUESS
SVEN [57.7K]

Answer:

122

Step-by-step explanation:

x = 180-(180-50-72) = 180-(130 - 72) = 180 - 130 + 72 = 50 + 72 = 122

6 0
3 years ago
Read 2 more answers
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