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Molodets [167]
3 years ago
8

The function f(x) varies inversely with x and f(x) 0.2 when x= 0.4.

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
7 0
I hope this helps you

chubhunter [2.5K]3 years ago
6 0

Answer:

The answer is B. 0.05.

Step-by-step explanation:

To solve this problem we have that the equation varies inversely with x, so we can suppose that the equation have this form (because when x is higher f(x) will be lower):

f(x)=\frac{a}{x}

Having this and using the initial values we can find the a value:

f(x)=0.2\\x=0.4\\

Replacing this values in the initial equation and clearing it, we have:

a=0.2*0.4=0.08

knowing that a is 0.08 we can use the new x value to find the new f(x), this is:

f(x)=\frac{0.08}{x}=\frac{0.08}{1.6}=0.05

Based on this the answer is B. 0.05.

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AysviL [449]
B. 200.96 in. The area of the pizza with a 16" diameter (8" radius) is 201.06.
8 0
3 years ago
Do not multiply by pi. Just use the whole number and do not try to include pi in the
IrinaK [193]

Answer:

Surface area = 1808.64in² and volume is 7234.56in³

Step-by-step explanation:

The figure above is a sphere, and it has a diameter of 24in

Radius = ?

Radius = diameter / 2

R = 24 / 2

R = 12in

Surface area of of sphere = 4πr²

Volume of a sphere = 4/3 πr³

π = 3.14

1. Surface area = 4 * 3.14 * 12²

Surface area = 4 * 3.14 * 144

Surface area = 1808.64in²

2. Volume of the sphere = 4/3πr³

Volume = 4/3 * 3.14 * 12³

Volume = 4/3 * 3.14 * 1728

Volume = 7234.56in³

The surface area of the sphere is 1808.64in² and the volume is 7234

56in³

4 0
3 years ago
(Find the distance between the points A(4, 3) and B(7,-1).​
lana66690 [7]

Answer:

5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the angles in this quadilateral
ch4aika [34]

Answer:

Therefore a= 90°,b=54°, x=54°, y= 162°

Step-by-step explanation:

a=90°

a:b=5:3

5+3= 8

5/8 x A = 90

A is the sum of the angles of a and b divided in the ratio 5:3

5A/8 = 90

cross multiply

5A= 90 X8 = 720

5A=720

A= 720/5= 144°

b= 3/8 x 144 = 3x144/8 = 432/8 = 54

a= 90

b= 54

x:y is in the ratio of 1:3

the Sum of angles in a Quadrilateral is 360°

if the sum of a and b is 144°

then the reamining angles is 360-144= 216°

then x:y=1:3

1+3=4

x= 1/4 x 216= 54°

y= 3/4 x 216= 162°

Therefore a= 90°,b=54°, x=54°, y= 162°

we can see that b = x = 54°

7 0
3 years ago
Plz help me with these math questions
Akimi4 [234]
For b on the first paper you will start with the distribution property and multiply both x and 2 by 3 because they are in the ()
now you have 3x+ 6=x-18
from here you can subtract x from both sides
2x+6=-18
next subtract 6 from both sides
2x=-24
divide both sides by 2...
x=-12
hope this helped
8 0
3 years ago
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