All categories

3 years ago

The diameter of a circle is 14m. use 3.14 for π. round to the nearest tenth.

Mathematics

1 answer:

lakkis [162]3 years ago

5 0

Area: 153.9m

formula: 3.14(r^2)

7^2= 49
3.14•49=153.86
153.86 rounded is 153.9

You might be interested in

In a week, 15 hens laid 75 eggs. what is the unit rate for eggs per hen?

yarga [219]

75 divided by 15 is 5. 5 eggs per hen

8 0

3 years ago

For the equation, complete the solution. 7x + y = −18

Alex777 [14]

Answer:

x= - 18/7 - 1/7y, y

or if you are solving for y= -18-7x, x

( SEE OTHER IMAGE)

Step-by-step explanation:

See image below:)

8 0

3 years ago

Read 2 more answers

Alexia runs a dog walking business. She charges a $3.75 base fee for

aliina [53]

Well 10.30 x 5 = $51.50 and then half an hour would be $5.15 so that’s $56.65 for the hours. then plus the 3.75 that’s $60.40. and then minus the 4.50 that’s $55.90

8 0

3 years ago

Read 2 more answers

The points with coordinates (x, -1), (2,2), and (4,3) lie on the same line. What is the value of x?

borishaifa [10]

Find the slope of the line passing throught the points (2, 2) and (4, 3).

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Substitute:

$m=\dfrac{3-2}{4-2}=\dfrac{1}{2}$

If the point (x, -1) lie on the same line, then the slope of line passing through the points (2, 2) and (x, -1) the same:

Substitute:

$m=\dfrac{-1-2}{x-2}=\dfrac{-3}{x-2}$

We have the equation:

$\dfrac{-3}{x-2}=\dfrac{1}{2}$ <em>cross multiply</em>

$(1)(x-2)=(-3)(2)$

$x-2=-6$ <em>add 2 to both sides</em>

$x=-4$

<h3>Answer: x = -4.</h3>

7 0

3 years ago

The Quinn family drove 228 miles in 4 hours at a constant rate. Which equation can be used to determine how far they traveled ea

anyanavicka [17]

What can be used on this is the distance over time formula, so what you,do is divide 228 by 4 to get the distance traveled in one hour. And 288/4=57. So they traveled 57 mi in one hour. Hope this helped.

6 0

3 years ago

Read 2 more answers