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MakcuM [25]
3 years ago
10

Please help me fast I still nee to finish 2 more ixl's by monday!!!!

Mathematics
1 answer:
sleet_krkn [62]3 years ago
3 0

Answer:No

Step-by-step explanation:

Given system of equation is:

2x + 3 = y

2x + y = 15

To check whether (2,7) is solution to this system or not, we will put x=2 and y=7 in both equations.

Putting x=2 and y=7 in Eqn 1

2(2) + 3 = 7

4 + 3 = 7

7 = 7

Thus the ordered pair satisfies the equation

Putting x=2 and y=7 in Eqn 2

2(2) + 7 = 15

4 + 7 = 15

11 ≠ 15

The ordered pair do not satisfy the second equation.

Hence,

(2,7) is not a solution to the given system of equations.

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motikmotik

Answer:

a.) 20 kilometers

b.)1.67 hours

Step-by-step explanation:

a.) formula= speed =distance/time

Speed= 10km/hr

Distance=unknown

Time=2hrs

Therefore from formula, distance=speed x time

10 x 2

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b.) If average speed is increased by 2km/hr then

total speed= 2+10=12km/hr

Distance remains constant therefore distance= 20km

Therefore time =distance/speed

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= 1.67 hours

7 0
3 years ago
F(x) = 2x-(x+6) for f(-3)
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Plug in -3 for x
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4 0
3 years ago
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Answer:

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Step-by-step explanation:

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hope this helped =3

4 0
4 years ago
1000 student and 0.825 participants in sports how many students participate
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