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alekssr [168]
3 years ago
8

Can anyone help me on #7 and #8

Mathematics
2 answers:
Leno4ka [110]3 years ago
8 0
This is all you have to do.

nika2105 [10]3 years ago
8 0
See my picture reply.

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Plzzzzz answer this question about density mass and volume!!!!!!!!!
nataly862011 [7]

Answer:

13.896 kg

Step-by-step explanation:

You can find the mass of the bar by first finding the volume.

V = BH

where B = area of the base (the trapezium), and

H = height (distance trapezium between bases)

The area of a trapezium is

A = (b1 + b2)h/2

where b1 and b2 are the lengths of the bases of the trapezium (the parallel sides), and

h = the altitude of the trapezium (distance between the bases of the trapezium)

V = (b1 + b2)h/2 * H

V = (12 cm + 6 cm)(5 cm)/2 * 16 cm

V = 720 cm^3

The volume of the bar is 720 cm^3.

Now we use the density and the volume to find the mass.

density = mass/volume

mass = density * volume

mass = 19.3 g/cm^3 * 720 cm^3

mass = 13,896 g

Now we convert grams into kilograms.

1 kg = 1000 g

mass = 13,896 g * (1 kg)/(1000 g)

mass = 13.896 kg

Answer: 1.3896 kg

6 0
3 years ago
The price of gasoline has increased from $2.00 per gallon to $3.00 per gallon. how would this price change be represented on the
vladimir2022 [97]

If the price of gasoline has increased from $2.00 per gallon to $3.00 per gallon. how would this price change be represented on the demand curve is: a movement from one point on the line to a higher point on the line.

<h3>What is demand curve?</h3>

Demand curve can be defined as the curve that show price of goods and services produced as well as the quantity demanded for the goods produce at a particular period of time.

The  price change can be represented on the demand curve when price increase and this happen when the price of goods move from one point on a line to a higher point on the line

Therefore  how would this price change be represented on the demand curve is: a movement from one point on the line to a higher point on the line.

Learn more about demand curve here:
brainly.com/question/1139186

brainly.com/question/16790743

#SPJ4

5 0
1 year ago
Kiko baked a batch of cookies. She ate 3 cookies and then gave half of the remaining cookies to her friends. If c represents the
tatiyna

Answer: (c - 3) / 2 = x

Step-by-step explanation:

If c represents the cookies, then you remove 3 because she ate 3 of the cookies. Since half of the remainder of the cookies were given to her friend, you must divide the product of c - 3, by 2. The reason for the parenthesis is so that it overrules PEMDAS, as parenthesis goes before division.

7 0
3 years ago
Divide 170 in the ratio 6:5:6
Leto [7]

Answer:

A dilation has center (0,0). Find the image of the point L (-5,0) for the scale factor 4.

Step-by-step explanation:

A dilation has center (0,0). Find the image of the point L (-5,0) for the scale factor 4.

5 0
2 years ago
Pick your answer is it <br> A <br> B <br> C or <br> D
aleksley [76]

Answer:

I belive its B,C

sorry if i'm wrong but hope it helps

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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