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3 years ago

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Which inequality is true when the value of s is 14?

1 answer:

maria [59]3 years ago

7 0

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Help pls :)<br> .<br> .<br> .<br> If 3x-4y=4 & x+2y=18, then evaculate x^2 +y^2 +xy=

DanielleElmas [232]

Answer:

<h2>129</h2>

Step-by-step explanation:

$\left\{\begin{array}{ccc}3x-4y=4\\x+2y=18&\text{multiply both sides by 2}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}3x-4y=4\\2x+4y=36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad5x=40\qquad\text{divide both sides by 5}\\.\qquad\boxed{x=8}\\\\\text{Put the value of x to the second equation:}\\\\8+2y=18\qquad\text{subtract 8 from both sides}\\2y=10\qquad\text{divide both sides by 2}\\\boxed{y=5}$

$\text{Put the values of x and y to the expression}\ x^2+y^2+xy:\\\\8^2+5^2+(8)(5)=64+25+40=129$

6 0

3 years ago

If 6:2=8:x, then<br> a. 6x=16<br> b. 6x=10<br> c.2x=48<br> d. 2x=14

otez555 [7]

Answer:

a)6x = 16

Step-by-step explanation:

<h2><u>Finding the value</u></h2>

the ratio can be solved by <u>cross multiplication :</u>

6 : 2

8 : x

6*x = 8*2

6x = 16

answer is : <u>a) 6x = 16</u>

4 0

3 years ago

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Spike eats 6 hotdogs in 4 minutes. How many hotdogs can he eat in 1 hour.

Angelina_Jolie [31]

Answer:

90

Step-by-step explanation:

YW

4 0

4 years ago

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Can y’all find the area for me please and thank you

nordsb [41]

867 ft. hope this helps!

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4 years ago

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Kendra has 2 yards 3 inches of ribbon. She needs 5 feet 9 inches for a craft ribbon. Does Kendra have enough ribbon? If yes, how

Fittoniya [83]

She has enough she will have enough there will be 1 foot and 6 inches left.
Hope this helps.

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3 years ago