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3 years ago

F (4) =5 x - 9 answers?

Mathematics

1 answer:

Levart [38]3 years ago

7 0

Answer:

Step-by-step explanation:

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Roger just ran 5 laps. He is at 20% of his goal.

Vladimir79 [104]

Answer: 20 laps

Step-by-step explanation:

Given

Roger just ran 5 laps and completes 20% of his goal

Suppose his goal is x laps

So, 20% of x must be equal to 5

$\Rightarrow 20\%\times x=5\\\Rightarrow 0.2x=5\\\\\Rightarrow x=\dfrac{5}{0.2}\\\\\Rightarrow x=\dfrac{50}{2}\\\\\Rightarrow x=25\ \text{laps}$

So, he needs 20 more laps to complete his goal.

3 0

3 years ago

If the area of a circle is 121pi square units, what is its diameter

svetlana [45]

The area of a circle is A = r^2pi
Since the area is equal to 121pi the equation would be, 121pi = r^2. To find r in terms of pi take the square root of 121, to find the radius. Then multiply that by two to get the diameter.

4 0

3 years ago

Todd begins piano practice at 4:15 P.M. and ends at 5:50 P.M. How long does he practice?

marta [7]

If He began at 4:15 and ended at 5:50 then that would be 95 minutes

7 0

4 years ago

Read 2 more answers

Mrs. martina wants to put a wire fence around her garden which is 15 feet long and 8 feet wide. how much fencing does she need?

dlinn [17]

The answer is D 46 ft ( 15+15+8+8)

6 0

3 years ago

Read 2 more answers

Jean loves to go bird watching. One day, she saw 7 birds.The next day, she

Ludmilka [50]

Answer:

Jaw saw an average of 6 birds each day

Step-by-step explanation:

Given: One day, Jean saw 7 birds. The next day, she saw 11 birds. The next day, she saw no birds.

To find: average number of birds Jean saw each day

Solution:

Average is a central value of a set of terms.

Average of terms $x_1,x_2,x_3,...,x_n$ is given by $\frac{x_1+x_2+x_3+...+x_n}{n}$

Number of birds, Jean saw on day one $(x_1)$ = 7

Number of birds, Jean saw on the second one $(x_2)$ = 7

Number of birds, Jean saw on the third one $(x_3)$ = 7

So,

average number of birds Jean saw each day = $\frac{x_1+x_2+x_3}{3} =\frac{7+11+0}{3}=\frac{18}{3}=6$

Therefore,

Jaw saw an average of 6 birds each day

6 0

3 years ago