Ask question

Ask question

All categories

3 years ago

15

The distance, d, in kilometres, travelled by a plane after t hours can be represented by d(t)=-4t³=40t²+500t, where t is greater

than or equal to 0 and less than or equal to 10. How long does the plane take to fly 4088 km?

1 answer:

Ede4ka [16]3 years ago

8 0

D(t) = -4t^3 + 40t^2 + 500t = 4088
4t^3 - 40t^2 - 500t + 4088 = 0
t = 7

Therefore, the plane has flown 4088 km 7 hours after it took off.

You might be interested in

1)2{18-(5+3^2)÷7] <br>2) 1+(-2-5)^2+-3*4<br>PEMDAS<br>

stira [4]

Answer:

I think these are the right answers. The answer to one is 32. The answer to two is 38.

1: 2[18-(5+3^2)/7]

2[18-(5+9)/7]

2[18-14/7]

2[18-2]

2 times 16 = 32

2: I used a calculator for this one.

3 0

3 years ago

Pls, help me it has been a missing assignment for too long :/

Natasha2012 [34]

Answer:

Snail A: 0, 5, 10, 15, 20, 25, 30

Snail A travels at a rate of 30 inches in 1 hour or 30 inches per hour.

Snail B: 0, 3, 6, 9, 12, 15, 18

Snail B travels at a rate of 18 inches in 1 hour or 18 inches per hour.

Snail C: 0, 6, 12, 18, 24, 30, 36

Snail C travels at a rate of 36 inches in 1 hour or 36 inches per hour.

Snail D: 0, 4, 8, 12, 16, 20, 24

Snail D travels at a rate of 24 inches in 1 hour or 24 inches per hour.

3 0

3 years ago

Number has more than two factors

VMariaS [17]

I'm going to assume that you are asking how a number can have two factors.
So, a factor is an integer (non-fractional/decimal number) you multiply by another integer to get the actual number.

Well, let's look at the number 4. The number four has the following factors:
1, 2, 4
In a 'rainbow' style, you match the two outer numbers, then the two next inner numbers, and so on.
Because the number '2' is the one in the center and there is no other number to multiply it by, it must multiply by itself to reach the number 4.
Well, you must have two numbers to actually multiply together, so every number has two factors: 1, and itself (except for 0).
I hope this helps, and good luck :)

7 0

3 years ago

Read 2 more answers

Find the function values

babymother [125]

Step-by-step explanation:

f(x)=3x−2 so when the variable x is replace with an actual value ( − 1 ) we get f(−1)=3(−1)−2

=−3−2

=−5

4 0

2 years ago

2x + 10x find equivalent expression

snow_tiger [21]

It's 12x. you just combine both numbers

8 0

4 years ago

Read 2 more answers