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3 years ago

PLEASE HELP! this is the 3rd time I've posted this : Writes in Y=mx+b from.

Mathematics

2 answers:

meriva3 years ago

5 0

Answer:

y=-5x+50

Step-by-step explanation:

easy use y=mx+b

m is slope

b is y-intercept

slope is rise over run

this line is negative

down 10 over 2

-10/2=-5

5 feet per hour negative

the point touching y-axis is y-intercept where x=0

(0,50)

y=-5x+50

You're welcome if you have more questions feel free to ask me

kifflom [539]3 years ago

4 0

Answer:

The slope of this line in y = mx + b format is y = -x + 50

Step-by-step explanation:

This line is negative, which means the slope (m) will be negative. B is the y-intercept, or where the line hits the y-axis. In this case, we can see that it's 50. Slope is rise over run, so -1/1. This can be simplified to -1. We don't write 1 in front of variables because it's unecessary, so the final answer is

y = -x + 50

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Ju-yi just got back from A 10 mile bicycle ride and she had ridden three miles per hour faster. The ride would have taken her 30

Gnom [1K]

Answer:

$6.39\ miles/hr$

Step-by-step explanation:

$Let\ her\ speed=x\ mile/hr\\\\Let\ time\ taken=t\ hr\\\\distance=speed\times time\\\\10=x\times t\ .........................(1)$

When speed is 3 mi/hr faster.

$Her\ speed=x+3\ mile/hr\\\\Time\ taken=t-\frac{1}{2}\ hr\ \ \ as\ it\ takes 30\ minutes\ fewer\ and\ 30\ min=\frac{1}{2}\ hr\\\\distance=speed\times time\\\\10=(x+3)\times (t-\frac{1}{2})\\\\10=xt+3t-\frac{x}{2}-\frac{3}{2}\......................eq(2)\\\\eq(2)-eq(1)\\\\10-10=xt+3t-\frac{x}{2}-\frac{3}{2}-xt\\\\3t=\frac{x}{2}+\frac{3}{2}\\\\t=\frac{x+3}{6}\\\\from\ equation\ 1\ t=\frac{10}{x}\\\\\frac{10}{x}=\frac{x+3}{6}\\\\60=x^2+3x\ \ \ \ \ \ \ \ \ cross\ multiplication\\\\x^2+3x-60=0$

$Solution\ of\ ax^2+bx+c=0\ is\ given\ by\ x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\Here\ a=1,b=3\ and c=-60\\\\x=\frac{-3\pm\sqrt{3^2-4\times 1\times (-60)}}{2}\\\\x=\frac{-3\pm\sqrt{9+240}}{2}\\\\Only\ positive\ value\ will\ be\ taken\\\\x=\frac{-3+\sqrt{9+240}}{2}=6.39\ miles/hr$

7 0

3 years ago

Clyde’s age is 8 years more than thrice bonnie’s age. If the product of their ages is 80, how old is Clyde

Law Incorporation [45]

Answer:

Step-by-step explanation:

Let Bonnie's age = b.

Clyde's age is 8 year more than Bonnie's age, so Clyde's age is

3b + 8

The product of the ages is 80, so

b(3b + 8) = 80

3b^2 + 8b = 80

3b^2 + 8b - 80 = 0

(3b + 20)(b - 4) = 0

3b + 20 = 0 or b - 4 = 0

3b = -20 or b = 4

b = -20/3 or b = 4

Discard the negative answer since an age is not a negative number.

Bonnie's age is 4.

Clyde's age is 3 * 4 + 8 = 12 + 8 = 20.

Answer: Clyde's age is 20.

6 0

3 years ago

I NEED HELP ASAP!!! PLEASE I BEG YOUU :(

lawyer [7]

Answer:

Step-by-step explanation:

As the graph approaches positive infinity along y-axis, it goes both negative and positive directions along the x-axis.

7 0

3 years ago

2(x-y) the same as 2x-2y<br><br> 4(x+y) the same as 4y+4x

Levart [38]

Distribution of properties

7 0

4 years ago

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Y_Kistochka [10]

We rewrite the expresion:
((t+3)/(t+4))*(1/(t^2+7t+12))
We have then
((t+3)/(t+4))*(1/((t+4)*(t+3)))
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(1/(t+4)^2)
Answer:
(1/(t+4)^2)
opcion 3

3 0

4 years ago