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2 years ago

Please help me, If you do not know do not answer

Mathematics

1 answer:

Tpy6a [65]2 years ago

6 0

1 & 2 are functions

3 & 4 are not a functions

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Multiplying rational expresssions solve t^2-t-12/t+1 * t+1/t+3 Show answer with working

Andreyy89

First simplify t^2-t-12, which becomes (t-4)(t+3)
now you can rewrite the expression as one term; (t-4)(t+3)(t+1)/(t+1)(t+3)
cancel out (t+3) and (t+1) which leaves the answer as (t-4)

4 0

3 years ago

The delivery ramp at the corner cafe id a right triangle. The hypotenuse is 4 meters long. One leg is 3 meters long. What is the

disa [49]

Answer:

f. sqrt 7 meters

Step-by-step explanation:

we use Pythagoras' theorem here,

let the unknown side be x,

therefore,

=> 3² + x² = 4²

=> x² = 16 - 9

=> x = √7 m

7 0

3 years ago

Read 2 more answers

What is the slope of the line with the equation of y = 3/4 x that passes through the point (2, 1)?

Nadusha1986 [10]

Answer:

slope is 3/4

Step-by-step explanation:

the slope is just what is attached to the x

3 0

3 years ago

What is the answer to 701km-523km445m

mixas84 [53]

You convert it to meters first. So you get 701000m and 523445mYou subtract the values and get this: 177555

So your answer is 177555

Hope this helps :)

8 0

3 years ago

A plane is descending into the airport. After 5 minutes it is at a height of 6500 feet. After 7 minutes it is at a height of 590

Jet001 [13]

Let's assume

height of plane in feet =h

time in minutes =t

we are given

A plane is descending into the airport. After 5 minutes it is at a height of 6500 feet

so, we get one point as (5,6500)

After 7 minutes it is at a height of 5900 feet

so, we get another point as (7,5900)

we can use point slope form of line

$y-y_1=m(x-x_1)$

points as

(5,6500)

x1=5, y1=6500

(7,5900)

x2=7 , y2=5900

Calculation of slope(m):

$m=\frac{y_2-y_1}{x_2-x_1}$

now, we can plug values

$m=\frac{5900-6500}{7-5}$

$m=-300$

Equation of line:

we can use formula

$y-y_1=m(x-x_1)$

we can plug values

$h-6500=-300(t-5)$

$h=-300t+8000$

Time of landing:

we can set h=0

and then we can solve for t

$h=-300t+8000=0$

$t=\frac{80}{3}min$ ..............Answer

5 0

3 years ago