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worty [1.4K]
3 years ago
10

Which two numbers multiply to 60 and add to -2?

Mathematics
1 answer:
USPshnik [31]3 years ago
8 0
xy=60\\
x+y=-2\\\\
xy=60\\
x=-y-2\\\\
(-y-2)y=60\\
-y^2-2y-60=0\\
y^2+2y+60=0\\
y^2+2y+1+59=0\\
(y+1)^2=-59


There are no such numbers in real numbers.
Do you perhaps want a solution in complex numbers?
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vlabodo [156]

Answer:

I think it is C

Step-by-step explanation:

If I'm wrong try B

4 0
3 years ago
At the first meeting of the Tennis Club, the 7 members decided to have a tournament in which every player will play a match agai
mariarad [96]

Answer:

21 matches

Step-by-step explanation:

This is a combination problem where we have to select two member out of 7 members

 

So we want calculation of  7C2

 

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5 0
3 years ago
There are 90 million pet dogs in the US. The number of dogs is 1000% the number of reptiles. How many reptiles are there?
Marina86 [1]

Answer:

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Step-by-step explanation:

Percentages and ratio:

The double of a measure, for example, is 200% of the measure.

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There are 90 million pet dogs in the US. The number of dogs is 1000% the number of reptiles.

The number of pet dogs is 10 times the number of reptiles, which means that:

10x = 90 000 000

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3 0
3 years ago
Which expressions are solutions to the equation 3/4 x = 15?
algol [13]
I think so C is correct
Because is true.
7 0
3 years ago
-36=-0.8k what does K equal?
masya89 [10]
K=45


Hope that helped you!
6 0
3 years ago
Read 2 more answers
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