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barxatty [35]
3 years ago
6

40 points!

Mathematics
2 answers:
Georgia [21]3 years ago
8 0

Hello...

What creates the convection current inside Earth?

A. Rising and sinking of material

Dennis_Churaev [7]3 years ago
7 0

Answer: <u>A. Rising and sinking of material.</u>


Step-by-step explanation:

Convection currents are caused by the cooling of material as it rises up, which leads to the same material to sink. This material then warms as it sinks to rise again. This is why we call them convection <em>currents.</em> Because they both rise, and sink, in a circular motion we call the <u>convection current.</u>

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Find the volume of the composite space figure to the nearest whole number.
Romashka [77]

Answer:

  d.  944 mm^3

Step-by-step explanation:

The area of a circle is given by ...

  A = πr² . . . . . where r is the radius, half the diameter

The area of a circle with diameter 9 mm is ...

  A = π(4.5 mm)² = 20.25π mm²

The area of the semi-circular end of the prism is half this value, or ...

  semicircle area = (1/2)(20.25π mm²) = 10.125π mm² ≈ 31.809 mm²

__

The area of the rectangular portion of the end of the prism is the product of its width and height:

  A = wh = (9 mm)(6 mm) = 54 mm²

Then the base area of the prism is ...

  base area = rectangle area + semicircle area

  = (54 mm²) +(31.809 mm²) = 85.809 mm²

__

This base area multiplied by the 11 mm length of the prism gives its volume:

  V = Bh = (85.809 mm²)(11 mm) ≈ 944 mm³

The volume of the composite figure is about 944 mm³.

7 0
3 years ago
mrs. roberts makes 'regular' and 'low sugar' jam. she sells both kinds of jam in 340-grams jar.A Jar Of her Low sugar Jam Contai
Vinvika [58]

Answer:

Percentage of sugar in low sugar jam is

340÷100= 3.4

Divide 3.4 from 102.

102/3.4 =30

Therefore there is 30% of sugar in her low sugar jam

3 0
3 years ago
Which of these equations have no solution? Check all that apply.
german

Answer:

2(x + 2) + 2 = 2(x + 3) + 1

Step-by-step explanation:

8 0
3 years ago
How many feet long is the shadow of a 15-foot flagpole if a 5-foot woman standing at the base of the flagpole has a shadow that
Vikentia [17]

The height of flagpole is 12.5 feet.

Step-by-step explanation:

Given,

Height of woman = 5 foot

Shadow of woman = 6 feet

Ratio of height to shadow = 5:6

Shadow of flagpole = 15 foot

Height of flagpole = x

Ratio of height to shadow = x:15

Using proportion;

Ratio of height to shadow :: Ratio of height to shadow

5:6::x:15\\

Product of mean = Product of extreme

6*x=15*5\\6x=75

Dividing both sides by 6

\frac{6x}{6}=\frac{75}{6}\\x=12.5

The height of flagpole is 12.5 feet.

Keywords: ratio, proportion

Learn more about proportion at:

  • brainly.com/question/9527422
  • brainly.com/question/9381523

#LearnwithBrainly

8 0
3 years ago
write and solve two word problems: one that involves converting units of liquid volume and one that involves converting unit of
nataly862011 [7]
Convert 1 gallon to quarts = 4 quarts
convert 10 pounds (lbs) to grams
3 0
3 years ago
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