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denis23 [38]
3 years ago
12

Gary played soccer for 1 hour and tennis for 2 hours. Tanya played tennis for 2 hours and soccer for 1 hour. Who played sports l

onger? Explain.
Mathematics
2 answers:
Alex777 [14]3 years ago
7 0
They play an equal amount of hours
gladu [14]3 years ago
5 0
They played it at an equal amount so there for the answer is a trick

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For the following right triangle, find the side length x. Round your answer to the nearest hundredth.
Aleksandr-060686 [28]

Answer:

\sqrt{113} = x

Step-by-step explanation:

In right triangles the sum of square length of two legs is equal to square length of hypotenuse:

7^2 + 8^2 = x^2

49 + 64 = x^2 add like terms

113 = x^2 find the root for both sides

\sqrt{113} = x

8 0
2 years ago
I have 10 goats, n of which are male. I need to choose 2 of them to make a casserole.
snow_tiger [21]

Answer: There are 4 male goats.

Step-by-step explanation:

We know that n of the 10 goats are male.

The probability that in a random selection, the selected goat is a male, is equal to the quotient between the number of male goats (n) and the total number of goats (10)

The probability is;

p = n/10

Now the total number of goats is 9, and the number of male goats is n -1

then the probability of selecting a male goat again is:

q = (n-1)/9

The joint probability (the probability that the two selected goats are male) is equal to the product of the individual probabilities, this is

P = p*q = (n/10)*((n-1)/9)

And we know that this probability is equal to 2/15

Then we have:

(n/10)*((n-1)/9) = 2/15

(n*(n-1))/90 = 2/15

n*(n-1) = 90*2/15 = 12

n^2 - n = 12

n^2 - n - 12  = 0

This is a quadratic equation, we can find the solutions if we use Bhaskara's formula:

For an equation:

a*x^2  + b*x + c =  0

The two solutions are given by:

x = \frac{-b +- \sqrt{b^2 - 4*a*c} }{2*a}

For our case, the solutions will be:

n = \frac{1 +- \sqrt{(-1)^2 - 4*1*(-12)} }{2*1 } = \frac{1+- 7}{2}

The two solutions are:

n = (1 - 7)/2 = -3    (this solution does not make sense, we can not have a negative number of goats)

The other solution is:

n = (1 + 7)/2 = 4

This solution does make sense, this means that we have 4 male goats.

5 0
2 years ago
What is -4 x 3, 3 x -4, and 5 x -4
DedPeter [7]

Answer:

Each answer is negative

Each equation has a four within it, either negative or positive

Step-by-step explanation:

-4x3=-12

3x-4=-12

5x-4=-20

7 0
2 years ago
What kind of triangle is this?
skad [1K]

Answer:

answer: obtuse

Step-by-step explanation:

Hope that helps!

7 0
2 years ago
Read 2 more answers
A bread recipe calls for 2 teaspoons of yeast to make 1 loaf of bread. Martha wants to make 2 loaves. Should Martha calculate th
Katena32 [7]

Answer:

Martha should calculate the exact amount of yeast she will need to make the bread rise.

Step-by-step explanation:

6 0
3 years ago
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