3 years ago

1. Mary got the following scores: 83, 88, 78, 80, and 90 in her examination in English. What is the mean score of Mary?

Mathematics

1 answer:

ohaa [14]3 years ago

4 0

Answer:

1=83.08

Step-by-step explanation:

mean=summation of number divided by number

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Martha has saved 2,700 to share with her family . She divides one -third of her saving equally between her two children , lola a

VikaD [51]

Answer:

150

Step-by-step explanation:

one third of 2700 = 900

900/2 = 450

450/3 = 150

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What are the approximate values of the non-integral roots of the polynomial equation?

irga5000 [103]

Answer:

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Step-by-step explanation:

The of the polynomial equation are those values of x, for which f(x)=0.

Consider equation

$f(x)=0\\ \\(x^2+6x+8)(x^2+6x+13)=0$

By zero product property,

$x^2+6x+8=0\ \text{or}\ x^2+6x+13=0$

Solve each equation:

1. $x^2+6x+8=0$

$D=6^2-4\cdot 8=36-32=4\\ \\x_{1,2}=\dfrac{-6\pm \sqrt{4}}{2}=\dfrac{-6\pm 2}{2}=-4,\ -2$

2. $x^2+6x+13=0$

$D=6^2-4\cdot 13=36-52=-16=16i^2\\ \\x_{1,2}=\dfrac{-6\pm \sqrt{16i^2}}{2}=\dfrac{-6\pm 4i}{2}=-3-2i,\ -3+2i$

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Please help I will reward brainly!!!!

matrenka [14]

The second one is correct
It's multiplying by 2

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3 years ago

Every female bear has 3 baby cubs. What is the constant of proportionality for the ratio of cubs to female bears?

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B. 1/3 because for every 1 female bear, there are 3 cubs. It 1 to 3 which is 1/3.

I hope that helps!

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Which explains whether or not the graph represents a direct variation?

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The answer is A. I think

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