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vagabundo [1.1K]
3 years ago
14

Brainlist thingy and 20

Mathematics
2 answers:
Flauer [41]3 years ago
7 0

Answer:

Nolan takes 100s

Step-by-step explanation:

x = x - 15x/100

x = 0.85x

x = 85/0.85

x = 100s

vitfil [10]3 years ago
5 0
X=100 is the correct answer
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Use a quadratic equation to find two real numbers with a sum of -43 and a product of 306.
vlabodo [156]

Answer:

Real numbers = 39 and 9

Step-by-step explanation:

The standard form of a quadratic equation is ax² + bx + c = 0

Given the following data;

a = 1

b = -43

c = 306

Quadratic equation formula is;

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

Substituting into the equation, we have;

x = \frac {-(-43) \; \pm \sqrt {43^{2} - 4*1*306}}{2*1}

x = \frac {43 \pm \sqrt {1849 - 1224}}{2}

x = \frac {43 \pm \sqrt {625}}{2}

x = \frac {43 \pm 25}{2}

x_{1} = \frac {43 + 25}{2}

x_{1} = \frac {68}{2}

x_{1} = 39

x_{2} = \frac {43 - 25}{2}

x_{2} = \frac {18}{2}

x_{2} = 9

Therefore, the two real numbers are 39 and 9.

The quadratic equation now becomes;

x² - 43x + 306 = (x - 39)(x - 9) = 0

4 0
3 years ago
The running trail in the local park is 3.416 miles long. If the park board were planning to extend the trail by 1.34 miles, what
morpeh [17]

Answer:

4.756 miles

Step-by-step explanation:

It is given that,

The running trail in the local park is 3.416 miles long. If the park board were planning to extend the trail by 1.34 miles.

We need to find the new length of the running trial. It is equal to the sum of length of running trail and the extended length. So,

l = 3.416 +1.34

l = 4.756 miles

So, the new length of the running trail be 4.756 miles

7 0
3 years ago
What is the ratio of the radius of a circle to its circumference
maksim [4K]
ANSWER:

r : 2 ( Pi ) r

Hope this helps! <3
5 0
3 years ago
Carly purchased 9 1/2 pints of ice cream for a party. If each guest will be served exactly 3/5 pints of ice cream, what is the g
Oduvanchick [21]

Answer:

he can only serve 2

Step-by-step explanation: since  3.5 plus 3.5 is 7.0 if you add one more it turns to 7.0 plus 3.5  10.5 so the greatest he can serve is two people

4 0
3 years ago
Divide 5 by 4. is your answer a rational number ? explain
drek231 [11]
The answer is 1.25. yes it is rational because you can write it as a fraction
7 0
3 years ago
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