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2 years ago

100 points

Mathematics

2 answers:

labwork [276]2 years ago

8 0

Answer:

C. (f • g)(2) = 44, the distance in miles the boat traveled

Step-by-step explanation:

<u>Given functions:</u>

f(x) = 2x² + 3
g(x) = x + 2

<u>Find the value of (f · g)(2):</u>

(f · g)(2) = f(2) · g(2) = (2(2²) + 3) · (2 + 2) = 11 · 4 = 44

Since this is a product of the speed and the time, this represents the distance travelled in 2 hours

Correct choice is C

STatiana [176]2 years ago

7 0

Answer:

The distance traveled by the B737-400 aircraft in 5 hours is 2,000 miles

Step-by-step explanation:

Average speed = 400 miles per hour

Distance = 400t

t= 5

Total distance = 400t at t hours

Total distance when t = 5 hours

Total distance traveled = 400t

= 400 × 5

= 2,000 miles

Total distance travelled = 2,000 miles

The distance traveled by the B737-400 aircraft in 5 hours is 2,000 miles

hope this helps

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Is this expression a perfect square trinomial?

Katyanochek1 [597]

Yes it is (10x-y)^2 is the answer of it

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3 years ago

Louisa ran at an average speed of five miles per hour along an entire circular park path. Calvin ran along the same path in the

docker41 [41]

Answer:

15 miles

Step-by-step explanation:

Let $x$ be the miles in the circular park path, $t_{L}$ the time Louisa takes to finish and $t_{C}$ the time Calvin takes to finish both in hours.

Then $x$ , the longitude is equal to the velocity times the time used to finish. So

$x=5t_{L}$

$x=6t_{C}$

And the difference between Louisa's time and Calvin' time is 30 minutes, half an hour. So:

$t_{C}=t_{L}-0.5$

Three equations, three unknowns, the system can be solved.

Equalizing the equation with x :

$5t_{L}=6t_{C}$

In this last equation replace $t_{C}$ with the other equation and solve:

$5t_{L}=6(t_{L}-0.5)\\ 5t_{L}=6t_{L}-3\\ 3=6t_{L}-5t_{L}\\ 3=t_{L}\\ t_{L}=3$

With Louisa's time find x:

$x=5t_{L}\\ x=5(3)\\ x=15$

7 0

2 years ago

ILL MARK U BRAINLIEST!

V125BC [204]

B is the answer i hope it helps i

4 0

2 years ago

Read 2 more answers

GURRY FOR BRAINLEIST PLS HURRY

pashok25 [27]

Answer:

C= 10.6

Step-by-step explanation:

AB^2=AC^2+CB^2

C^2=7^2+8^2

C^2= 113

√113=10.630

5 0

3 years ago

A toy company spends $20 for every doll it makes. Promotion of the dolls costs $400 and the company sells each doll for $30. How

Romashka-Z-Leto [24]

Answer:

$20d+400< 30d$

Step-by-step explanation:

we know that

The profit is equal to the number of dolls multiplied by the selling price minus the number of dolls multiplied by the cost of each doll minus the cost of the promotion of the dolls

To make a profit, the number of dolls multiplied by the selling price minus the number of dolls multiplied by the cost of each doll must be greater than the cost of the promotion of the dolls

Let

d -----> the number of dolls

The linear inequality that represent this problem is

$30d-20d > 400$

Adds 20d both sides

$30d > 20d+400$

Rewrite

$20d+400< 30d$

4 0

2 years ago