What is the value of x? 4x - 9 = 27

Answers

Answer 1

Answer: $4x-9=27$
$4x=27+9$
$4x=36:4$
$x=9$
The answer is: 9

Answer 2

Answer: =>4x - 9 = 27=>4x = 27 + 9=>4x = 36=>X = 36/4=>X = 9 ...Hope it helps!!!

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A piano has white keys and black keys in the ratio of 13 : 9. If there are 52 white keys,how many black keys are there?

Answers

✡ Answer: 9/36 ✡

- - Why?

Because if you look at it like this:

$(13)/(52) = (9)/(36)$

- 52 being the white and 36 because the black.

✡Hope this helps✡

Let w = white and b = black.
Using the proportion,
13/w = 9/b
Since w = 52 white keys, therefore
13/52 = 9/b
b = 36 black keys

Katalin drove 210 miles on her vacation. She drove an average of 1.4 times faster on the second 105 miles of her trip than she did on the first 105 miles of her trip. Which expression represents the time she spent driving? Let x = her speed on the first half of the trip.A. 180x

B. 360 divided by x.

C. 252 divided by x.

D. 180 divided by x.

Answers

The answer is D. 180 divided by x. .

HELPPPP PLSS THIS IS URGENT WILL GIVE BRAINLEASTWhat are the slope and y-intercept of the line?

A-The slope is approximately 3 and the y-intercept is 2.
B-The slope is approximately 1.33 and the y-intercept is 2.
C-The slope is approximately 2 and the y-intercept is 3.
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Answers

Answer:

Step-by-step explanation:

How many solutions does the equation -2 + 2y + 3 = 3a) none
b) one
c) infinity
d) three

Answers

Answer:

one

Step-by-step explanation:

y=1

hope this helps

Answer:

one

Step-by-step explanation:

Which list shows the lengths from shortest to longest ? A. 0.2, 1/4, 3/8, 0.8, 7/8

B. 0.2, 1/4, 3/8, 7/8, 0.8

C. 1/4, 0.2, 3/8, 7/8, 0.8

D. 0.8, 1/4, 3/8, 0.2, 7/8

Answers

Answer:

It’s a

Step-by-step explanation:

Tell me if I’m wrong

Frank runs 3 miles in 25 minutes. At the same rate, how many miles would he run in 20 minutes?n milos

Answers

2.4 miles

cross multiple 3/25 x x/20
25x=60
x = 60/25 simplified is 2 2/5 or 2.4 miles

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