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Sonbull [250]
3 years ago
6

Solve for x in the equation 2x^2 + 3x - 7 = x^2 + 5x + 39

Mathematics
1 answer:
Nataliya [291]3 years ago
7 0
Sorry I can't explain this one much but it is x = 1+- square root of 47
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Answer:

(k): 65k=c   is true  per kilometer he runs,

Step-by-step explanation:

(k): 65k=c   is true     if Yutaka was to walk and burn only 48 calories then k then is x= walk  and y = run   8x+7y>= c      8x+7y>=  8(48) + 7(65) >= 839

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If three sides are given :side,side,side(S,S,andS):​
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Answer:

(sss) condition

Step-by-step explanation:

hope the ans helped you

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shusha [124]
3/4 + 1/2
multiply 1/2 denominator and numerator by 2 to match 3/4
= 3/4 + 2/4 = 5/4 (copy same denominator add numerator)

2/6 + 1/3
divide 2/6 denominator and numerator by 2 to match 1/3
= 1/3 + 1/3 = 2/3 (copy same denominator add numerator)

5/9 + 2/3
multiply 2/3 denominator and numerator by 3 to match 5/9
= 5/9 + 6/9 = 11/9 (copy same denominator add numerator)



6/9 -1/5
cross multiply 6x5 - 1x9 for numerator
for denominator multiply 9x5
=30/45 - 9/45= 21/45
divide num and den by 3
=7/15


5/8-1/3
cross multiply 5x3-1x8 for numerator
multiply 8x3 for denominator
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7 0
2 years ago
Which graph shows a proportional relationship?
kherson [118]

Answer:

The second option

Step-by-step explanation:

The rate of change needs to stay constant.

The rate of change can be explained by looking at the "rise" (y) over the "run"(x)

The rate of change for the second option is 2.  We know this because...

Rise(2)

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Run(1)

Try looking at one of the points, now go up 2 and over 1, you should now be at the second point, do it again but twice, you should now be at the third point. A proportional relationship must also go through the origin (0,0)

3 0
3 years ago
Write a variable expression for 9 more than a number s.
Vladimir [108]
S+9

More than suggests addition.
7 0
3 years ago
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