3x + 14 = 20 - 2x. What is x and how to solve it?

Answers

Answer 1
Answer:

3x + 14 = 20 - 2x

add 2x to each side

5x +14 = 20

subtract 14 from each side

5x = 6

x = 6/5  = 1 1/5

Answer: 1 1/5


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True or False, the following 4 ordered pairs are solutions to the following equation:y = -2x + 11(-1,13), (0,11), (1,9), (2,7)
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20 is decreased to 11

Answers

20 minus 9 is decreased to 11

I hope this helps

A jewelry stand sells 5 different pairs of earrings. The earrings sell for $12, $9, $6, $8, and $10.What is the mean absolute deviation of the prices? Round to the nearest cent, if necessary.

$______

Answers

The answer is $1.6

Step 1. Find the mean of all values (X = ?).
Step 2. Find the distance of all values from the mean (d1, d2, d3, d4, d5).
Step 3. Find the mean of distances (D).

x1 = $12
x2 = $9
x3 = $6
X4 = $8
x5 = $10

Step 1.
X = (x1 + x2 + x3 + x4 + x5)/5
    = (12 + 9 + 6 + 8 + 10)/5
    = 45/5
    = $9

Step 2.
d1 = 12 - 9 = 3
d2 = 9 - 9 = 0
d3 = 9 - 6 = 3
d4 = 9 - 8 = 1
d5 = 10 - 9 = 1

Step 3.
D = (d1 + d2 + d3 + d4 + d5)/5
    = (3 + 0 + 3 + 1 + 1)/5
    = 8/5
    = $1.6

A soccer game is 90 min long.36 min have passed what percentage of the game has passed?

Answers

the answer is 40%
Here is how I got it.
36/90* 100%= 2/5* 100%=2* 20%=40%

What is the quotient of 5.4 and -0.3

Answers

Hey there!

The "quotient" is basically the result of a division equation

Remember: \n -,- = + \n +,+ = + \n-,+ = - \n +,- = -

This pair is: +, - (Positive (+), negative (-)

So, this means your result will be a negative

(5.4)/(-0.3) = -18 \n \n (-0.3)(-18) = 54 \n -18 = -18

Therefore your quotient is -18

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)


Hello!

If you divide or multiply by one negative number, the number will remain negative. Let's just divide 5.4 and 0.3, and add a negative after.

5.4/0.3=18

We add our negative

-18

Therefore, our quotient is -18.

I hope this helps!

Solve the equations using the substitution method:
4x -2y =22
2x + 4y = 6

Answers

we have that
4x -2y =22------> clear variable y
2y=4x-22--------> y=4x/2-22/2---------> y=2x-11-----> equation 1
2x + 4y = 6------> equation 2

substitute equation 1 in equation 2
2x+4*[2x-11]=6-----> 2x+8x-44=6----> 10x=50------> x=5
then 
y=2x-11----> y=2*5-11----> y=-1


A $240 table is on sale for $180. What is the percent decrease in price?

Answers

Answer:

25%

240-180 = 60

240*.25=60 so it is 25% off

Step-by-step explanation:

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