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Viefleur [7K]
4 years ago
8

1. f(x) = 2x + 6 Evaluate f(2)

Mathematics
2 answers:
fredd [130]4 years ago
7 0
1) f(x)=2x+6
f(2)=2(2)+6
=4+6
=10

2)f(x)=3x
f(a+1)=3(a+1)
=3a+3
3)f(x)=3x-1 and g(x)=5x+3

f(2)=3(2)-1
f(2)=6-1
=5
g(3)=5x+3
=5(3)+32
=15+3
=18


f(2)+f(3)=5+18
=23.
Katen [24]4 years ago
6 0

Answer:8x

Step-by-step explanation:

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The volume of a cube is 36 cm3. What is the surface area of the cube, rounded to the nearest tenth of a cm2
alekssr [168]

Answer:

65.4 cm²

Step-by-step explanation:

The volume of a cuboid is calculated by multiplying the length, base, and height together. Since a cube has equal sides, the formula for the volume of a cuboid can be simplified as shown below.

Volume of cube

= side ×side ×side

= side³

Given that the volume is 36 cm³, let's find the length of each side.

side³= 36

Cube root both sides:

side=\sqrt[3]{36}

Total surface area of a cube is the sum of the surface areas of its 6 identical square faces.

Area of a square

= side ×side

= side²

Surface area of 1 face= (\sqrt[3]{36})^2

Total surface area

= 6(\sqrt[3]{36} )^2

= 65.416 (5 s.f.)

= 65.4 cm² (nearest tenth)

Additional:

To learn more about surface area of cube, do check out the following!

  • brainly.com/question/21600799
3 0
2 years ago
65. If the diameter of the sphere is halved, what will be the difference in volume?
Murrr4er [49]

Answer:

Hi there !

  • A. 1/8 of the original volume
  • 24 is the mode

<h2>Step-by-step explanation:</h2>

<h3>Question 1 :-</h3>

LET RADIUS OF SPHERE= R

VOLUME OF SPHERE= ( \frac{4}{3})\pi \:  {r}^{3}

WHEN RADIUS IS HALVED RADIUS IF SPHERE=R/2

VOLUME= ( \frac{4}{3} )\pi( \frac{r}{2})^{3} = {(4/3)πR^3}/8

THE VOLUME WILL BECOME 1/8 TH OF THE ORIGINAL VOLUME.

<h2>Question 2 :-</h2>

Wehave,

Mode+2×Mean=3×Median

⇒Mode=3×Median−2×Mean

Given : Mean=21 and Median=22

Putting the given values, we get

Mode=3×22−2×21=66−42=24.

Hope it helps u....

Stay safe, stay healthy and blessed

Have a great day !

Thank you

7 0
2 years ago
What is 11 times 5/6
Inga [223]

Answer:

simplified form -

Exact form - 55/6

Decimal form - 9.16..

Mixed number form - 9 1/6

Step-by-step explanation:

7 0
3 years ago
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Step-by-step explanation:

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8 0
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