Khan-academy help please
khan-academy help please - 1

Answers

Answer 1
Answer:

Answer:

Solve for x^2/2 - 10x = 0

<=> x^2 - 20x = 0

<=> x(x - 20) =0

<=> x = 0(invalid), x = 20

=> After 20s, Rui reaches his lowest altitude

Answer 2
Answer:

Answer:

Hello,

x = 10

Step-by-step explanation:

-(-10)/(2(1)/(2) )  = (10)/(1)  = 10

or :

d(0) = 0

and

d(20) = 0

(0 + 20)/(2)  = 10


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Marisol graphed a scatter plot of the number of hours she rode herbicycle (x) and the distance traveled (y). She drew the trend line and
calculated its equation to be y= 10x+4. What is the predicted distance
Marisolrode her bicycle if she rode for 2.5 hours? *

20
25
29
30

Answers

Answer:

lolololololololoolololo

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

The price of a dress is reduced by 6,5% in a sale. The original price of the dress was $56.Work out the sale price of the dress.

Answers

Answer:

$52.36

Step-by-step explanation:

We know

The price of a dress is reduced by 6.5% in a sale.

The original price of the dress was $56.

What is the sale price of the dress?

6.5% = 0.065

We take

56 - (56 · 0.065) = $52.36

So, the sale price of the dress is $52.36

Name a segment that is perpendicular to segment AB.G
E
A
D
H
F
B
С

Answers

Answer:

BC

Step-by-step explanation:

Simplify (2x + 3)(x – 4) = ?

Answers

Use the FOIL method (first, outside, inside, last) to multiply:

2x^2-8x+3x-12

This can be simplified even more into:

2x^2-5x-12.

Hope this helped!

Write the equation in standard form. 0.5x = y - 4

Answers

Answer:

y=0.5x+4

Step-by-step explanation:

0.5x= y-4

add 4 on both sides

and then you get:

y=0.5x+4

Answer:

y = 0.5x + 4, or y = 1/2x + 4 (if you prefer fractions)

Step-by-step explanation:

y = mx + b (slope intercept form / standard form) ; m = 0.5 or 1/2, b = 4.

m = linear coefficient/slope(denoted by a in a 1 degree binomial)

b = constant coefficient / y-intercept (denoted by b in a 1 degree binomial)

to convert this equation into a standard form equation. You need to isolate y and leave the coefficients on the other side.

0.5x = y - 4

0.5x (+4) = y - 4 (+4)

0.5x + 4 = y

y = 0.5x + 4

A MAN walked for 1/3 hour and then got an automobile ride for 1/2 hour. what part of time consumed he ride on automobile ????(a) 1/3
(b) 3/5
(c) 5/6

Answers

Walk - (1)/(3) h
Ride - (1)/(2)h
Journey took (1)/(3)+(1)/(2) = (2+3)/(6) = (5)/(6) h = 50 minutes
and (1)/(2) it's a (3)/(5) of time

answer B

Final answer:

To find the part of time consumed riding the automobile, subtract the time spent walking from the total time. The correct answer is 5/9 hour.

Explanation:

To find the part of time consumed riding the automobile, we need to compare the time spent walking to the total time. The total time is 1/3 hour + 1/2 hour, which is equal to 5/6 hour. To find the part of time consumed riding, we subtract the time spent walking from the total time. So, the part of time consumed riding the automobile is 5/6 hour - 1/3 hour, which is equal to 10/18 hour. Simplifying this fraction, we get 5/9 hour. Therefore, the correct answer is (c) 5/9.

Learn more about Time Consumption here:

brainly.com/question/36766609

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