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2 years ago

Given the functions f(×)=-×2+9 and g(×)=6-2×

Mathematics

1 answer:

lora16 [44]2 years ago

8 0

Answer:

hehe

Step-by-step explanation:

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A participant in a 21-mile walkathon walks at a steady rate of 3 per hours. He thinks, "the relationship between the number of m

Gnom [1K]

Answer:

Yes. I agree with his claim because the equation relating the miles left to walk and the number of miles left to walk is : $y=-3t+21$

Step-by-step explanation:

Given :

It's a 21 - mile walkathon
The rate at which he is moving is 3 miles per hour.

Let the number of miles walked be $x$ ;

∴,

The number of miles ' $y$ ' left to walk will be : $y=21-x$

Thus the time ' $t$ ' for which he walked :

$t=\frac{distance}{speed} \\t=\frac{x}{3}$ :

∴

From these equations , we get :

$x=21-y\\x=3t\\21-y=3t\\y=21-3t$

Thus , when we compare this with $y=mx+c$ ,

$y=mx+c\\y=-3t+21\\m=-3,c=21$

Thus this is an equation of a Line with slope -3.

3 0

2 years ago

1 4/5 divided by 1 1/5 fraction has to be in its simplest form

____ [38]

Answer:

14/11

Step-by-step explanation:

cause when u divide you have to switch the second fraction; it's called the reciprocal.

do crossed division and you'll get 14/11.

8 0

2 years ago

Read 2 more answers

Anybody good at this? x - ( 9x -10) + 11 = 12x + 3 ( -2 + 1/3)

kenny6666 [7]

X - (9x -10) + 11 = 12x + 3( -2 + 1/3)
x - 9x + 10 + 11 = 12x - 5 ...........................(1/3-2) = -5/3 => x 3 = -5
-8x + 21 = 12x - 5
26 = 20x
x = 13/10

8 0

2 years ago

Solve by elimination: 4x+9y=28 -4x-y=-28

nikdorinn [45]

Step-by-step explanation:

4x+9y=28

-4x-y=-28

8y=0

divide both side by 8

y=0

solve for X in equation 1

4(X)-9(0)=28

4x-0=28

4x =28

divide both side by 4

4x/4=28/4

X= 7

y=0,x=7

4 0

2 years ago

A. 6x^3+18x b.6x^2+3 c.36x^2+18 d. 36x^2+3

zzz [600]

The answer: 6x^3+18x

The Explanation: You need to uses distributive property to 6x to x^2+3 which will be 6x^3+18x

6 0

2 years ago