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Arada [10]
3 years ago
9

Write an inequality for the statement. The sum of a number and nine is less than thirty.

Mathematics
1 answer:
givi [52]3 years ago
5 0

Answer:

x + 9 < 30

"a number" is x and it's the sum (addition) of that and 9 which is less (<) than 30

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What is 6(x+3)=2(2x+5)
koban [17]

Answer:

x = -4 ;

Step-by-step explanation:

6(x+3)=2(2x+5)

Distribution

6x+18 = 4x + 10

Subtract 4x on both sides

2x+18 = 10

Subtract 18 on both sides

2x = -8

Divided by 2

x = -4

Now if we have to substitute the value of X

6(-4+3)=2(-8+5)

Parenthesis first

6(-1) = 2(-3)

-6 = -6

7 0
3 years ago
A square piece of land is to be divided into 4 square quadrants of equal size. On a map, the entire piece of land measures 6 inc
Oksana_A [137]

Answer:

The scale of the map is inch = 20 feet.

This statement must be incorrect or the fraction of the inch is missing.

Because 6" long, at a scale of one inch = 20 feet, would only be 120 feet x 120 feet.

120 x 120 = 14,000 ft^2 and each of the four quadrants wouls only be 3600 ft^2.

5 0
3 years ago
I don’t understand the concept of this problem
maxonik [38]

Answer:

This uses the method of elimination/addition.

Step-by-step explanation:

1 (9x + 7y = 15)

-7 (5x + y = -9) <— let’s eliminate y for both equations

9x + 7y = 15

+ -35x - 7y = 63 <— add both of the equations

—————————————————

- 26x + 0y = 6

(Please let me know if the answer is correct or not)

5 0
3 years ago
Which inequalities are true? Check all that apply. Three-fifths &lt; 0 Four-sixths greater-than one-half Nine-elevenths &lt; 1 T
Kipish [7]

\frac{3}{5} < 0

\frac{8}{16} > \frac{1}{2}\\\\

<em><u>Solution:</u></em>

<em><u>We have to find the inequalities that are true</u></em>

<em><u>Option 1</u></em>

\frac{3}{5} < 0\\\\0.6 < 0

0.6 is not less than 0

Thus this inequality is not true

<em><u>Option 2</u></em>

\frac{4}{6} > \frac{1}{2}\\\\0.667 > 0.5

0.667 is greater than 0.5

Thus this inequality is true

<em><u>Option 3</u></em>

\frac{9}{11} < 1\\\\0.818 < 1

0.818 is less than 1

Thus this inequality is true

<em><u>Option 4</u></em>

\frac{8}{16} > \frac{1}{2}\\\\

0.5 = 0.5

Thus the above inequality is not true

6 0
3 years ago
In a Black Friday sale, if you buy 5 video games for $ 39.99 each, you get 1 free. After the offer, how much does each video gam
Kruka [31]

Answer:

$200.00

Step-by-step explanation:

Round the $39.00 to $40.00 then add it all together because you can't forget the taxes.

8 0
2 years ago
Read 2 more answers
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