3 years ago

Please help me evaluate the expression 10a + 7 if a =1/5

Mathematics

1 answer:

sattari [20]3 years ago

6 0

Answer:

Step-by-step explanation:

10a+7

<u>10(1/5)</u> + 7

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Complete the statement with equal to greater than or less than 5/5 * 2 3/4

Westkost [7]

5/5*2 3/4 > 2 3/4

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3 years ago

The area of the surface of a sphere is described by the formula S=4(3.14)r^2. The earth has a radius of 3960 miles and dry land

Stella [2.4K]

Answer: $57,512,581.63miles^2$

Step-by-step explanation:

Substitute the value of the radius of the Earth into the formula given in the problem, where r is the radius, to obtain the surface area of the Earth:

$S=4(3.14)r^2\\S=4(3.14)(3,960miles)^2\\S=196,960,896miles^2$

The problem says that the dry land forms 29.2% of the Earth’s surface, therefore, multiply the surface area by $\frac{29.2}{100}=0.292$

Threfore, the area of dry land is the following:

$S_{land}=(0.292)(196,960,896miles^2)=57,512,581.63miles^2$

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3 years ago

What is the solution to the system of equations?

gizmo_the_mogwai [7]

The solution to the system of equation is
(- 3,5,6)

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3 years ago

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-3 + 5 is _ units from -3, in the _ direction.

Vilka [71]

Not sure!!!!!;( next time put a pic

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3 years ago

Hi I need help on one questions it is Cora has two links of ribbon one ribbon is 2 feet long. The other ribbon is 30 inches long

Assoli18 [71]

Answer:

The ribbon that is 30 inches is longer.

Step-by-step explanation:

1 foot = 12 inches

2 feet = 24 inches

30 inches > 24 inches

4 0

3 years ago