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3 years ago

If f(x) = -x + 5 and g(x) = 3x + 2, Find f(2)*g(2).

Mathematics

1 answer:

Romashka [77]3 years ago

6 0

Answer:

Step-by-step explanation:

To find f(#) or g(#), plug the number into each x of the equation.

f(x) = -x + 5

f(2) = -(2) + 5

Simplify the parentheses by multiplying.

f(2) = -2 + 5

Add.

f(2) = 3

g(x) = 3x + 2

g(2) = 3(2) + 2

Simplify the parentheses by multiplying.

g(2) = 6 + 2

Add.

g(2) = 8

Now they are asking you to multiply

f(2) • g(2)

3 • 8

= 24

Hope this helps!

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Full working out for this question please

kvv77 [185]

Answer: B. t = 9.6tan(29°)

Step-by-step explanation:

<u>Based on the fact:</u>

$tan(x)=\frac{opposite}{adjacent}$

<u>Set x = 29 and solve:</u>

$\\\\tan(29)=\frac{t}{9.6} \\\\t=9.6*tan(29)$

3 0

3 years ago

Just some simple fraction problems, I am stuck on this though.

Zina [86]

Answer:

5 1/6 ÷ 4 2/3 = 31/28

3 3/4 ÷ 1 2/8 = 3

4 2/4 ÷ 2 1/4 = 2

5 2/5 ÷ 1 4/5 = 3

4 2/8 ÷ 3 2/4 = 17/4

3 3/9 ÷ 2 4/12 = 10/7

7 1/2 ÷ 3 3/5 = 25/12

6 2/8 ÷ 3 1/3 = 15/8

Explanation:

5 1/6 ÷ 4 2/3 = 31/6 ÷ 14/3 = (31/14) / (6/3) = (31/14) / 2 [when you divide by a certain number you multiply that number by the denominator] = 31/28

5 1/6 ÷ 4 2/3 = 31/6 ÷ 14/3 = 31/6 × 3/14

7 0

3 years ago

A swimming pool has to be drained for maintenance. The pool is shaped like a cylinder with a diameter of 5 m and a depth of 1.4

Korolek [52]

Answer:

8 hours

Step-by-step explanation:

basic equation

Q (flow rate) = V (volume)/ t (time)

so to find the time we just rearrange the equation and become

t = V/Q

V of cylinder

V = πr²T

and r (radius) = ½ diameter

V = 3.14 x 5² x 1.4

V = 109.9 m³

if the Q is 13 m³/hour then

t = 109.9/13 = 8.453 hours

round to nearest hour = 8 hours

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3 years ago

Yes i give brainliest

satela [25.4K]

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It can give some balls more chance to be picked, making it unfair

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3 years ago

The water level in a plastic pool changed by -8 gallons each hour due to small hole in the bottom after 6 hours the pool contain

oee [108]

Answer:

180

Step-by-step explanation:

When you multiply the about lost per hour by the amount of time, you get the amount lost total.

6*8=48

then you add that to the amount in the pool now, and you have the original amount.

7 0

3 years ago