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Flauer [41]
3 years ago
9

X^2-10x+8=0 by completing the square

Mathematics
1 answer:
OverLord2011 [107]3 years ago
4 0
When completing the square <span>x=9.12311 and </span><span>x=<span>0.876894</span></span>
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The high school took two field trips to the Newport Aquarium many many years ago. They used school buses and vans to transport a
il63 [147K]

Answer:

bus = 43

van 12

Step-by-step explanation:

This can be solved using simultaneous equations

Let v represent the number of students that a van carries

Let b represent the number of students that a bus carries

the following equations can be derived from the question

3v + 2b = 122 eqn 1

5v + 3b = 189  eqn 2

Multiply eqn 1 by 5 and eqn 2 by 3

15v + 10b = 610  eqn 3

15v + 9b = 567 eqn 4

Subtract equation 4 from 3

b = 43

Substitute for b in equation 1

3v + 2(43) = 122

solve for v

v = 12

5 0
3 years ago
Find the equation of the line which is parallel to y = 4x + 3 and goes through the point (4, 5)​
skad [1K]

Answer:

  • y = 4x - 11

Step-by-step explanation:

The given line has a slope m = 4.

We know parallel lines have equal slopes.

<u>Use point - slope equation and substitute the coordinates of the given point to get:</u>

  • y - 5 = 4(x - 4)
  • y - 5 = 4x - 16
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7 0
2 years ago
What number am I?
Katyanochek1 [597]

Answer:

The numbers less that 40 which have sum of digits 8 are 17, 26, 35.

Only one of those that has a factor of 7. And that is 35.

So you are 35.

Second way:

The numbers less that 40 which have a factor of 7 are 7,14,21,28,35

Only one of those which has sum of digits as 8. And that is 35.

So you are 35.

Step-by-step explanation:

3 0
3 years ago
Which operation would isolate the variable in this equation?
Blababa [14]

Answer:

D. Divide both sides by - 8

Step-by-step explanation:

-8x = 312

x = 312/(-8)

x = - 39

5 0
3 years ago
5. Luis found a new text messaging plan which will charge him $2.00 for 80 messages. Using this
Pavel [41]
I think that Luis would have to pay $22.50
7 0
2 years ago
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