3 years ago

Hi I hope you can help me im struggling with this. ((: I'll give you a brainy thing if your right

Mathematics

1 answer:

Serggg [28]3 years ago

6 0

It’s d because 15 more than 6 times a number would be 15+6x if that makes sense

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V125BC [204]

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3 years ago

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Ten coins weigh 25 grams how much does 1 coin weigh

kykrilka [37]

You need to divide here! Ok so if ten coins weigh twenty five grams, we need to do:
10÷25=?
Its easy if its ten you just shift the places. !0 divided by 25 is 2.5

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3 years ago

Whats the asnwer for this question?

sergij07 [2.7K]

Answer:

Step-by-step explanation:

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3 years ago

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The value of y varies directly with x. If x = 2, then y = 10. What is the value of x when y = 100? *

Fynjy0 [20]

Answer:

Step-by-step explanation:

y=kx

X=2 & y= 10

10=2k

k=5

when y=100

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3 years ago

For the given polynomials find the sum of the squares of the roots. P(x)=x^3-x^2-18x+k

slega [8]

$\text{Given that,}\\\\P(x) = x^3 -x^2 -18x+k\\\\\text{If the roots are}~ \alpha, ~ \beta,~\text{and}~ \gamma, ~ \text{then},\\\\\alpha +\beta+\gamma= -\dfrac{(-1)}1 = 1\\\\\alpha \beta +\beta \gamma + \gamma \alpha= -\dfrac{18}1 = -18\\ \\\text{Now, sum of the squares of the roots,}\\\\\alpha^2 + \beta^2 + \gamma^2 = ( \alpha + \beta + \gamma)^2 -2(\alpha \beta + \gamma \beta + \gamma \alpha)\\ \\~~~~~~~~~~~~~~~~~~=1^2 - 2(-18)\\\\~~~~~~~~~~~~~~~~~~=1+36\\\\~~~~~~~~~~~~~~~~~~=37$

6 0

2 years ago

Hi I hope you can help me im struggling with this. ((: I'll give you a brainy thing if your right​

Hi I hope you can help me im struggling with this. ((: I'll give you a brainy thing if your right