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avanturin [10]
3 years ago
5

Eighty, decreased by three times a

Mathematics
1 answer:
Marina86 [1]3 years ago
6 0

Answer:

The number is 9.

Step-by-step explanation:

Lets write this as an equation first. We'll substitute the number for the variable <em>x</em>.

80 - 3x = 5x + 8

First, let's add 3x to both sides.

80 - 3x + 3x = 5x + 3x + 8

80 = 8x + 8

Next, let's subtract 8 from both sides.

80 - 8 = 8x + 8 - 8

72 = 8x

Finally, let's divide both sides by 8.

72/8 = 8x/8

9 = x

<em>"x" is 9.</em>

<em>So the secret number is 9.</em>

P.S.

This is my first answer to a Brainly question so please don't complain!

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If i walk 9 hours at 5 miles an hour and fare have I walked in 9 hours i will mark brainiest
Neporo4naja [7]

Answer:

45 miles is how far you walked in 9 hours

Step-by-step explanation:

5 miles per hour x 9 hours = 45 miles

4 0
3 years ago
A marine biologist needs to put a GPS device underwater, halfway between two tracking stations to help document great white shar
Akimi4 [234]

The location of the GPS device will be ( 75,-45).

<h3>What is coordinate geometry?</h3>

A coordinate plane is a 2D plane that is formed by the intersection of two perpendicular lines known as the x-axis and y-axis.

The given coordinates of the stations are ( -50,-25) and (200,-65).

The midpoints for the two coordinates will be calculated by the formula given below:-

\rm Mid points= (\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2})

\rm Midpoint= \dfrac{-50+200}{2},\dfrac{-25-65}{2}

\rm Midpoint =\dfrac{150}{2},\dfrac{-90}{2}

Midpoints = 75, -45

Therefore the location of the GPS device will be ( 75,-45).

To know more about Coordinate geometry follow

brainly.com/question/18269861

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3 0
2 years ago
I just completed 12 questions on a test the progress bar shows 20% is complete how many total questions are on the test?
Mademuasel [1]
If 12 is 20%, then 24 is 40%, then 36 is 60%, then 48 is 80%, then 60 is 100%

So there are 60 questions on the test.
7 0
3 years ago
Read 2 more answers
Circles M and K are congruent, QR is congruent to LN and OP is congruent to VW. Find x.
guajiro [1.7K]

QR = LN, so

-2x = -3y + 3

OP = VW, so

-6x =-6y + 18

(-2x = -3y + 3)*(-2) ------> 4x = 6y - 6

-6x = - 6y + 18

4x = 6y - 6

<u>-6x = - 6y + 18</u>

-2x = 12

x= - 6

6 0
4 years ago
55 miles per hour for 10 hours?
barxatty [35]

Answer:

33000

Step-by-step explanation:

you do 60 times 10 cause theres 60 minutes in an hour and then you get that answer and the times 600 by 55

7 0
3 years ago
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