What is the percent correct for a quiz score of 14 points out of 20.A.43%B. 53%C.70%D.75%

Answers

Answer 1

Answer: 14 divided by 20 is 0.7
Multiply that by 100
The answer is 70%

Answer 2

Answer: C. 70% because 14/20=x/100 so all u have to do is cross multiple and find x.. which is 20x=1400 then divide 20 by 1400 which will be 70%

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How many solutions can be found for the equation 4x − 8 − 4x = 9?ZeroOneTwoInfinitely manycan you maybe answer quickly. I need help asap

Six plus four fifths A equals nine tenths A

Answers

6+4/5a=9/10a
make bottom numbers same
into 10
60/10+8/10a=9/10a
minus 8/10a from both sides
60/10=1/10a
multiply both sides by 10
60=a

Find the inverse of the function d(x) = 2x - 4

Answers

Answer:

d(x) = 1/2x + 2

Step-by-step explanation:

Swap x and y:

x = 2y - 4

Add 4 to the other side:

x + 4 = 2y

Divide by 2:

y = 1/2x +2

Answer:

see explanation

Step-by-step explanation:

let y = 2x - 4

Rearrange making x the subject, add 4 to both sides

2x = y + 4 ( divide both sides by 2 )

x = $(y+4)/(2)$

Change y back into terms of x, hence

$f^(-1)$ (x) = $(x+4)/(2)$

On Monday Jordan biked 2 3/4 miles on Wednesday he biked twice as many miles then he did on Monday on Friday Jordan biked 8 1/4 miles how many times more miles did it he bike on Friday then he did on Wednesday

Answers

58. Jordan biked 2 ¾ miles ON monday=> Then on Wednesday he biked twice as many miles as he did on Monday=> 2 x 2 and ¾=> 2 ¾ convert to decimals = 2.75=> twice as 2.75 = 2(2.75)On Friday he biked 8 ¼ miles.=> 8 ¼ = 8.25=> he biked 5.5 miles miles on Wednesday=> 8.25 – 5.5 = 2.75Therefore, he biked more than 2.75 miles on Friday compare to Wednesday.

Last Saturday, Jay spent 6 hours playing games, studying and talking with his friends. he spent 2/5 of the time playing games and 1/2 of the time studying. How many minutes did he spend talking with his friends?

Answers

(1 - (2/5 + 1/2)) x (6 x 60)
(1 - (4/10 + 5/10)) x 360
(10/10 - 9/10) x 360
1/10 x 360 = 36
so he spend 36 minutes talking with his friend

Final answer:

Jay spent 36 minutes talking with his friends on Saturday after spending 2/5 of his time playing games and 1/2 of his time studying.

Explanation:

The total time Jay spent on all activities is 6 hours. He spent 2/5 of his time gaming, so that would be 0.4 * 6 hours = 2.4 hours, and he spent half of his time studying, that's 0.5 * 6 hours = 3 hours. To figure out how much time he spent talking with friends, we subtract the time spent gaming and studying from the total time. So, 6 hours – 2.4 hours – 3 hours = 0.6 hour. As there are 60 minutes in an hour, Jay spent 0.6 * 60 = 36 minutes talking with his friends.

Learn more about Time calculation here:

brainly.com/question/33260049

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X^2 +105x-1050=1550

please help

Answers

-x^2+105x-1050=1550
We move all terms to the left:
-x^2+105x-1050-(1550)=0
We add all the numbers together, and all the variables
-1x^2+105x-2600=0
a = -1; b = 105; c = -2600;
Δ = b2-4ac
Δ = 1052-4·(-1)·(-2600)
Δ = 625
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
x1=−b−Δ√2ax2=−b+Δ√2a
Δ−−√=625−−−√=25x1=−b−Δ√2a=−(105)−252∗−1=−130−2=+65x2=−b+Δ√2a=−(105)+252∗−1=−80−2=+40

x equals 2588 over 105 which simplifies to 24.6

What number is 100 times as great as 0.3

Answers

100 times as great as 0.3 =
100 x 0.3 which equals 30
answer = 30

You do 100 times .3 and that equals 30.

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