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musickatia [10]
2 years ago
6

PLZZZ ANSERW CORRECTLY!!!!!!!!!!!!!!!!!!!!! i rilly need this you will get crown and I have 190 points you can have them!!!!!!!!

!!
From midnight to 7:00 am, the temperature rose 3/10 °C each hour. If the temperature at midnight was −1°C, what was the temperature at 7:00 am?
Mathematics
1 answer:
RideAnS [48]2 years ago
8 0

Answer:europa2433

Step-by-step explanation:

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8 less than the product of 5 and -4
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The answer would be:
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3 years ago
What is the value of m, if the equation my2+2y−4=0 has exactly one root?
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Answer:

m=\frac{-1}{4}

Step-by-step explanation:

A quadratic equation has one root if the discriminant is 0.

That is we need b^2-4ac=0 for this particular question.

Compare the following to find a,b, \text{ and } c:

ax^2+bx+c=0

my^2+2y-4=0

The variable x is representative of the variable y here.

a=m

b=2

c=-4

Plug in into b^2-4ac=0:

(2)^2-4(m)(-4)=0

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Subtract 4 on both sides:

16m=-4

Divide both sides by 16:

m=\frac{-4}{16}

Reduce:

m=\frac{-1}{4}

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