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2 years ago

12

An ice cream cone has a diameter of 12.8 cm and a slant height of 9 cm. Find the lateral surface area of the cone. Use 3.14 for

π. Round your answer to the nearest tenth.

1 answer:

Makovka662 [10]2 years ago

7 0

Answer:

about 181 or 180.96

Step-by-step explanation:

π·6.4·6.332+6.42≈180.9555

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An expecting mother wants to convert a corner of the nursery in her house into a rectangular playpen by enclosing the corner of

Elena-2011 [213]

10=1+9 1x9=9
=2+8 2x8=16
=3+7 3x7=21
=4+6 4x6=24
=5+5 5x5=25
↑ Left: the possible measurements of the two fences, Right: the possible areas

out of the areas calculated, 25 sq feet is the maximum. :)

Ans: 25 square feet

5 0

3 years ago

Find the average rate of change of f(x) = 4x² – 3 from 3 to 9.

Lina20 [59]

Answer:

44

Step-by-step explanation:

Given:

$f(x) = 4x^2 - 3$

Required:

Average range of change from 3 to 9

SOLUTION:

Step 1:

Find f(3) and f(9):

To find f(3), replace x with 3 in the given function

$f(3) = 4(3)^2 - 3$

$f(3) = 4(9) - 3$

$f(3) = 36 - 3$

$f(3) = 33$

To find f(9), replace x with 9 in the given function

$f(9) = 4(9)^2 - 3$

$f(9) = 4(81) - 3$

$f(9) = 324 - 3$

$f(9) = 321$

Average rate of change = $\frac{f(b) - f(a)}{b - a}$

Where,

$a = 3, f(a) = 33$

$b = 9, f(b) = 321$

Plug in the values into the formula for average rate of change.

$= \frac{321 - 33}{9 - 3}$

$= \frac{288}{6}$

$= 44$

Average rate of change = 44

3 0

3 years ago

Pls help!!! Which steps would you use to solve this equation? Check all that apply.

hram777 [196]

Answer:

you subtract 7 from both sides

Step-by-step explanation:

3 0

3 years ago

What number id 0.4% is 20

d1i1m1o1n [39]

0.4% x 20 = 0.08

Hope helps!-Aparri

6 0

3 years ago

John's field is 345 acres. He planted 3/5 of it with corn. How many acres are planted with corn. if u answer u are big brain

Phantasy [73]

Answer:

<h2>207 acres are planted with corn</h2>

Step-by-step explanation:

<h2>First you have to figure out how much 1/5 of 345 is, basically 345 divided by 5, which is 69 then do 69*3 high is 207 and boom 207 acres are planted with corn!!!</h2>

8 0

4 years ago