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ella [17]
3 years ago
6

I need help (please show your work)

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
6 0

Answer:

the solution is (-4, 3)

Step-by-step explanation:

if you were to graph y = -7/4x - 4 you could plot your first point at (0, -4) and get your second point by going up 7 units (from (0, -4) and to the left by 4

if you were to graph y = -1/4x + 2 you could plot your first point at (0, 2) and get your second point by going up 1 unit (from (0, 2) and to the left by 4

the second point plotted for each equation will be the point of intersection, (-4, 3)

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Help me ASAP!!!!!
Advocard [28]

Step-by-step explanation:

a ) given,

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Ben have money = twice the money bill have so,

in term of x it is = 2x

b ) given,

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hope this answer helps you dear...take care and may u have a great day ahead!

6 0
2 years ago
When the solution of x2 + 9x - 9 is expressed as
natita [175]

answer

r = b²-4ac

= 81 + 36

= 117

5 0
3 years ago
NEED HELP ASAP!!!!!!
melamori03 [73]
Okay so you can add up all the marbles to find a rate and divide.
Total: 20 marbles
Blue: 25% chance
Red: 40% chance
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8 0
3 years ago
Read 2 more answers
What is the solution to this inequality?
algol13
  1. B hus5hoegu9r47jssnkiroohdd
7 0
3 years ago
Find the discriminant and the number of real roots for this equation.
Margaret [11]

Our discriminant is 0 so, 4x^2 + 12x + 9 = 0 has one real root.

Option C is correct.

Step-by-step explanation:

we need to find the discriminant and the number of real roots for the following equation:

4x^2 + 12x + 9 = 0

The discriminant is found by using square root part of quadratic formula:

b^2-4ac

where b =12, a=4 and c=9

Putting values:

=b^2-4ac\\=(12)^2-4(4)(9)\\=144-144\\=0

To find out the number of real roots using discriminant we have following rules:

  • if discriminant b^2-4ac >0 then 2 real roots
  • if discriminant b^2-4ac =0 then 1 real root
  • if discriminant b^2-4ac <0 then no real roots

Since our discriminant b^2-4ac is 0 so, 4x^2 + 12x + 9 = 0 has one real root.

Option C is correct.

Keywords: discriminant

Learn more about discriminant at:

  • brainly.com/question/8196933
  • brainly.com/question/9328925
  • brainly.com/question/4853862

#learnwithBrainly

6 0
3 years ago
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