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Anika [276]
4 years ago
15

PLEASE ANSWER + BRAINLIEST!! Use the quadratic formula to solve. 3x^2 = 5x

Mathematics
1 answer:
ra1l [238]4 years ago
6 0
The quadratic formula is:

\frac{-b \pm  \sqrt{b^2-4ac} }{2a}

To solve the equation using the quadratic formula, we must put it in ax^2+bx+c form.

3x^2 - 5x + 0 = 0

Now plug a, b, and c into the formula and solve:

\frac{5 \pm  \sqrt{25 - 4(3)(0)} }{6}

Simplify:

\frac{5 \pm  \sqrt{25-0} }{6}

\frac{5 \pm 5}{6}

x = \frac{10}{6} or 0

Reduced, the answer is:

x = 5/3 or 0







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Answer:

65°

Step-by-step explanation:

2x= 130° (vertically opposite angles)

x= 130/2

x= 65°

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3 years ago
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3 years ago
Paul has completed 140 laps so far this season. He completes an additional 12 laps during each practice. Jacklyn has completed 5
kakasveta [241]

Paul: 140 + 12x

Jacklyn: 56 + 16x

Where x is how many practice sessions he had this season

"After how many more practices will Paul and Jacklyn have completed the same number of laps?"

This means what will x be if both equations are equal to each other

140 + 12x = 56 + 16x

Isolate x in one side by subtracting both sides by 12x

140 + 12x - 12x = 56 + 16x - 12x

140 = 56 + 4x

Subtract both sides by 56 to shift the 56 from the right side to the left side

140 - 56 = 56 - 56 + 4x

84 = 4x

Divide both sides by 4 to isolate x

84/4 = 4/4x

21 = x

x = 21

They'll have completed the same number of laps after 21 practices

Hope it helps :)

Branliest would be appreciated

6 0
3 years ago
Joshua invested $750 in an account paying an interest rate of
Maslowich
Due to the difference in the interest rate and the quarterly compounding, Joshua will have $212.24 more than Josiah.
Step-by-step explanation:
Giving the following information:
Joshua:
Initial investment (PV)= $750
Interest rate (i)= 0.0341/4= 0.008525
Number of periods (n)= 18*4= 72 quarters
Josiah:
Initial investment (PV)= $750
Interest rate (i)= 0.0285
Number of periods (n)= 18 years
To calculate the future value of each one, we need to use the following formula:
FV= PV*(1 + i)^n
Joshua:
FV= 750*(1.008525^72)
FV= $1,381.98
Josiah:
FV= 750*(1.0285^18)
FV= $1,169.74
Due to the difference in the interest rate and the quarterly compounding, Joshua will have $212.24 more than Josiah.
5 0
2 years ago
A number increased by 6 and the result divided by 3 is 21. what is the number?​
kogti [31]

Answer:

Step-by-step explanation:

let the number be x

(x+6)/3   =21

x+6=21*3

x+6=63

x=57

7 0
3 years ago
Read 2 more answers
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