A cone has a slant height of 8 cm and a radius of 2 cm. Estimate the surface area using π =3, and then calculate a more accurate surface area using π =3.14.

Answer:

Step-by-step explanation:

3×70° 45' 10''-2×40°25'10''

=210° 135'30''-80° 50'20''

=130°85'10''

=131°25'10''

Answer:

d.-6

Step-by-step explanation:

sana makatulong

Answer:

A

Step-by-step explanation:

This is the same as ((2^3)/(4^2))*((2^3)/(4^2))*((2^3)/(4^2))*((2^3)/(4^2))*((2^3)/(4^2)) which is equal to (2^(3+3+3+3+3)/4^(2+2+2+2+2)), so its (2^15/4^10)

Answer:

You could say 10/15-12/15.

Step-by-step explanation:

Answer: 36 3/32 so the answer is B.

Step-by-step explanation:

Answer:

1 Cards = 36%

2 Cards = 28%  

3 Cards = 24%

4 Cards = 12.5%

Step-by-step explanation:

Answer:

V=πr2h

you could've searched this up but i hope this helps anyway

Answer:

1 < x < 12

Step-by-step explanation:

The triangles satisfy the Converse Hi nge Theorem Condition the two triangles have two corresponding equal sides. Thus, the included angle of the triangle that has the largest length of the third side is greater than the included angle of the other triangle with a lesser third side length.

Thus,

33 > 3x - 3

Solve for x

33 + 3 > 3x - 3 + 3

36 > 3x

36/3 > 3x/3

12 > x

To ensure the angle is not 0 or negative, thus:

3x - 3 > 0

Solve for x

3x - 3 + 3 > 0 + 3

3x > 3

3x/3 > 3/3

x > 1

Possible range of values of x would be:

1 < x < 12

Answer:

6.1

Step-by-step explanation:

tan 27° = x/12

x = 12 · tan 27°

x = 6.1

Answer: A and C!

yw :DD\

Answer: 720

Step-by-step explanation:

Given

A club has 10 members and needs one president, a vice president, and a secretary

There are 10 positions for president i.e. 10 ways to select a member for it

Similarly, there 9 persons left to choose a position for vice president

likewise 8 persons for secretary

Total no of ways to do it are

[tex]\Rightarrow 10\times 9\times 8\\\Rightarrow 720\ \text{ways}[/tex]

Answer:

y-9=4/5(x+7)

Step-by-step explanation:

Point slope for is y-y1=m(x-x1). In this case, y1 is 9, x1 is -7, and m is 4/5. Therefore, we can fill in this equation. The equation will be y-9=4/5(x--7) This is equal to y-9=4/5(x+7).

If this helps please mark as brainliest

Answer:

100 is going to be the denominator or whole.

Step-by-step explanation:

A percent is basically equally to a number x/100

1. 4

2. -4

3. -5

4. 8

Answer:

do 11.5x7.2 that will get you your answer then after that when you get that answer you will divide that by 4

Step-by-step explanation:

Answer:

174

Step-by-step explanation:

72+72+10+20+ 174

Answer:

6

Step-by-step explanation:

0.9 + ( 1. 7 * 3 )

= 6

mark brainliest

Answer:

Step-by-step explanation:

value is decreasing so rate should be <1

f(x)=Pr^x

=1250 (0.8)^x

if x=1

f(1)=1250(0.8)^1=1000 $

if x=2

f(2)=1250(0.8)^2=800 $

if x=3

f(3)=1250(0.8)^3=640  $

so D is the correct answer.

Answer:

x ≈ 17.32, y = 20

Step-by-step explanation:

sin (30°) = 10/y

=> y = 10/sin (30°)

=> y = 20

x = [tex]\sqrt{20^{2} - 10^{2}}[/tex]

=> x ≈ 17.32

Answer:

Step-by-step explanation:

=========================================================

Explanation:

Multiply the fractions 9/10 and 2/5 to get

(9/10)*(2/5)

(9*2)/(10*5)

18/50

9/25

---------------------

Here's a visual way to see what's going on. Start by drawing a rectangle of any size or shape. Cut the rectangle vertically into 10 equal slices. Then shade 9 of those slices to represent the fraction 9/10, which is how far (in miles) Lewis walked. See the diagram below. Specifically, refer to figure 1.

The friend walked 2/5 of this shaded amount. Draw 4 horizontal lines to split each vertical bar into 5 equal pieces. So we'll be forming a grid of smaller rectangles. For any given column, you'll shade exactly 2 smaller rectangles out of the 5 total. Hence the 2/5. This is shown in yellow in figure 2. The yellow region is 2 units tall by 9 units across, so we have 2*9 = 18 yellow rectangles in all. This is out of 5*10 = 50 smaller rectangles overall.

That's how we get to the fraction 18/50 which reduces to 9/25 when you divide both parts by the GCF 2.

Answer:

This is telling me that plan B is the better choice

for a certain number of minutes, but after that,

plan A is better.

Let +n+ = number of minutes of calls

with plan B

-----------------------------------------

Set up an equation that makes the 2 plans equal

and then add 1 more minutes to +n+

-----------------------------------------

plan A = plan B

+18.5+=+6.5+%2B+.1%2A%28+n+-+40+%29+

Step-by-step explanation:

Answer:

Plan A is better if you talk at least 121 minutes per month

Step-by-step explanation:

1. Plan B is $6.50 plus 10 cents for each minute

2. Plan A is $18.50

3. For plan A to be better, one need to spend over $12 extra

4. Each minute cost 10 cents, so $12 would be 120 minutes of talk

5. Plan A is better if you talk at least 121 minutes

Answer:

18

Step-by-step explanation:

[tex]3 \times 2 \times 3[/tex]

That will give you 18 which is the answer

Answer:

.4635.30967741

Step-by-step explanation:

hope this helps

Answer:

assuming the shape is a square

1. 90 degrees

2. 45 degrees

3. 45 degrees

4. 90 degrees

Step-by-step explanation:

maths and angles

Answer:

1440

Step-by-step explanation:

you have to do length x width x height

Answer:

B. C which is the answer.

Answer:

Step-by-step explanation:

c=388

Answer:

-1.5 L/h

Step-by-step explanation:

The volume of water in a reservoir decreased from 24.000L to 18.000L between 06.00 and 10.00.

We need to find the average rate of decrease in volume of water. It can be solved as follows :

[tex]Rate=\dfrac{18-24}{10-6}\\\\=-1.5\ L/h[/tex]

The negative sign shows the decrease in volume. Hence, the rate of decrease in volume of water is 1.5 L/h.