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3 years ago

5

If the radius of a circle is 31.2 cm, what is the approximate area if you use 3.14 for pi and the area is rounded to the nearest

tenth?

2 answers:

dem82 [27]3 years ago

8 0

Answer:

3056.6 cm^2

Step-by-step explanation:

A = (pi)r^2 = 3.14 * 31.2 cm * 31.2 cm = 3056.6 cm^2

Darina [25.2K]3 years ago

6 0

Answer: 3056.60 sq. cm.

Step-by-step explanation:

Area of a circle = π x r^2

= 3.14 x 31.2^2

= 3056.60

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Find the amount in an account if $1,220 is invested at 9% compounded quarterly, for 17 years.

WINSTONCH [101]

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4 years ago

Describe two different strategies you could use to add l6 + 35 + 24 + 14.

adell [148]

Answer:

(16+35)+(24+14)

(16+14)+(35+24)

Step-by-step explanation:

This equation equals 89, basically what you would do is just add two numbers together and then add the sum of those two numbers, it makes the equation way easier to solve since you are not adding 4 numbers at a time, just 2.

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3 years ago

Read 2 more answers

15. In the coordinate plane, line Li passes through (0, 6) and (-8, 0).1) Determine the measure of the acute angle that L1 forms

Ksivusya [100]

Part 1

we have the points (0,6) and (-8,0)

Find out the slope

m=(0-6)/(-8-0)

m=-6/-8

m=3/4

The equation of L1 is

y=(3/4)x+6

Graph the given line

see the figure below

Find out the measure of angle X

tan(X)=6/8 -----> by TOA

X=tan^-1(3/4)

<h2>X=36.87 degrees</h2>

Part 2

step1

Find out the equation of the perpendicular line to the Line L1 that passes through the origin

Remember that

If two lines are perpendicular

then

their slopes are negative reci[rocal

so

the slope of the perpendicular line to L1 is

m=-4/3

step 2

Find out the equation of the line

y=-(4/3)x

step 3

Find out the intersection point between L1 and the perpendicular line

we have the system

y=(3/4)x+6 ----------> L1

y=-(4/3)x

Solve by graphing

step 4

Find out the distance between points (-2.88,3.84) and (0,0)

Applying the formula of the distance between two points

$\begin{gathered} d=\sqrt{(0-3.84)^2+(0+2.88)^2} \\ d=4.8 \end{gathered}$

therefore

The answer Part 2 is

<h2>The distance is 4.8 units</h2>

part 3

<h2>The point in L1 nearest to the origin is the point (-2.88,3.84)</h2>

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1 year ago

In the New York marathon there were 45 360 runners. 7 /10 of the runners were women. How many of the runners were men?

vodomira [7]

Answer:

13,608

Step-by-step explanation:

If 7/10 of the runners were women, than 3/10 of the runners were men. 3/10 of 45,360 runners is 13,608.

Hope this helps! Pls give brainliest! Also, plz sub to kgirl633 on yt.

7 0

3 years ago

Explain the difference between solving an equation with the variables all on one side compared to equations with variables on bo

kumpel [21]

An equation having variables on both sides can be solved by bringing all variables to one side.

An equation with all variables on one side can be solved by simply keeping the variables on the left and simplifying the value on the right. For example,

5x = 6 + 2x;

3x = 6;

x = 2.

For an equation with variables on both sides, just bring all variables on one side. After that, the same process like above is to be followed. For example,

5y - 3 - 3y = 3y + 5 - 3y;

5y - 3y - 3y + 3y = 5 + 3;

2y = 8;

y = 4;

Thus, methods for solving both kinds of equations is similar.

To learn more about equations, refer to this link:

brainly.com/question/27664510

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2 years ago