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Alexandra [31]
3 years ago
7

Which number is a solution of the inequality? 3x – 15 ≥ 3

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
8 0

Answer:

A. 6

Step-by-step explanation:

3x – 15 ≥ 3

Add 15 to both sides

3x  ≥ 18

Divide both sides by 3

x ≥ 6

So solutions are any numbers greater than or equal 6

Answer:

A. 6

Varvara68 [4.7K]3 years ago
3 0
The answer is A. 6 because you add 15 to 3. Then do 18 dived by 3 .
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Martina is 3 inches less than twice as tall as her little brother. Write an expression for Martina's height. How tall is Martian
Lyrx [107]

Answer:

Martina is 53 inches tall.

Step-by-step explanation:

In order to write an expression that relates the siblings heights we need to attribute variables to each brother. First we will call Martina's height as "m", then we can call her little brother's height as "b". The problem states that Martina's height is 3 inches less than twice the height of her brother so we have:

m = 2*b - 3

Then the problem gives us the height of her brother that is 28 inches tall, so b = 28. We can now compute Martina's height:

m = 2*28 - 3 = 56 - 3 = 53 inches.

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3 years ago
A school has 1,200 students. If 65% are girls, how many girls attend the school?
sergij07 [2.7K]
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What is a parallel slope for the line y = 2x + 2?
ArbitrLikvidat [17]

Answer: 2

Step-by-step explanation:

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5 0
3 years ago
Help due in 45 minutes!!
Nat2105 [25]

Answer:

(14,-1)

Step-by-step explanation:

okay so first you need to use the "x=4y+10" in the first equation.

Rewrite as

3(4y+10) +11y=7

Distribute the 3(4y+10)

Rewrite as

12y+30

You'll have the equation

12y +30 +11y= 7

Subtract the 7 from both sides

12y+30+11y-7= 0

Combine like terms

23y+23=0

the best thing to do here is divide the equation by 23.

23/23 = 1

you'll have

y + 1 = 0

this simplifies to

y= -1

use this y value to solve for x

the easiest way to do this is start with the equation

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Substitute the y for -1

x = -4(-1) +10

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the solution point is

(14,-1)

3 0
3 years ago
How many variables are in the following expression 3x+4y+z
arsen [322]

Answer:

3

Step-by-step explanation:

8 0
3 years ago
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