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tamaranim1 [39]
3 years ago
6

How do you solve this? please explain

Mathematics
1 answer:
Serggg [28]3 years ago
7 0
Quick steps to solve this.

1. Lets square both. (X +Y)*2 = 7*7 
2. Then, X*2 + 2XY + Y*2 = 49
3. Since XY is given to 4, X*2 + 8 + Y*2 = 49
4. Move 8
5. X*2 + Y*2 = 49 - 8
6. X*2 + Y*2 = 41

The answer is "41"  Boom!
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Answer:

The line passes through (4, -7) and (5, -10).

Step-by-step explanation:

When x = 4, y = 5 - 3(4), or 5 - 12, or -7.  Thus the point (4, -7) lies on the graph.  Similarly y = 5 - 3(5) = -10 when x  = 5.  Thus, the line also goes through (5, -10).  Plot these two points and draw a line through them.  Doing this will result in the desired graph.

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Step-by-step explanation:

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-7x .........................
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3 years ago
Which of the following values are solutions to the inequality 6&lt;x+2<br><br>1, -4 2,4 3,0​
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Step-by-step explanation:

3 0
3 years ago
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Emma Punch with 3/4 gallons of pineapple juice 1 1/2 gallons of orange juice and 7/8 gallons of apple juice how much gallons of
Grace [21]

Answer:

<h2>7/8 gallons of Ginger ale </h2>

Step-by-step explanation:

Total gallons of punch mixture =  gallons of pineapple juice + orange juice + gallons of apple juice + gallons of Ginger ale

Given gallons of pineapple juice = 3/4 gallons

Orange juice = 1 1/2 gallons

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On substituting into the formula above:

4 = \frac{3}{4} +\frac{3}{2}+\frac{7}{8}+Gallons\ of\ ginger\ ale

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She needs 7/8 gallons of Ginger ale to make the total of 4 gallons of punch

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3 years ago
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