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ser-zykov [4K]
3 years ago
10

BRAINLIEST BRAINLIEST!!! EASY MATH! Do with explanation!!

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
3 0

Answer:

<em>Answer is </em><em>given below with explanations</em><em>.</em><em>,</em>

Step-by-step explanation:

1)formula \: for \: linear \: equation \: is \:  \\ ax + by + c = 0 \\ 2) \: solution \: of \: the \: equation \: y = 9x - 3 \\ (2,15) \: is \: the \: solution \:  \\ on \: substitutuing \: the \: points \\ 15 = 9(2) - 3 \\ 15 = 18 - 3 \\ 15 = 15 \\ hence \: proved\\ 3) \: given \:( k,7) \: is \: a \: solution\\ \: of \: y =  - 4x + 1 \\ on \: substitutuing \: the \: points  \\ 7 =  - 4k + 1 \\ 4k =  - 7 + 1 \\ 4k =  - 6 \\ k = \frac{ - 6}{4}  \\ k = \frac{ - 2}{3}

<em>HAVE A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>.</em>

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Which factorization is equivalent to this expression?
grigory [225]

Answer:

10(3x+7)

Step-by-step explanation:

we have the expression:

30x + 70

To factor this expression we need to indentify the components that are common in both terms.

At first glance there is nothing in common, but we can notice that 30 and 70 are multiples of 10, that is:

10*3=30\\10*7=70

so we can substitute this into the expression:

10*3x+10*7

and now that we have the common term (the number 10) we can factorize it, that is, take out the common term and include a parentheses:

10(3x+7)

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3 years ago
If one of the roots of the equation x²- 4x + k=0exceeds the other by 2, then find the roots and determine the value of k
BaLLatris [955]

Answer:

roots: 1 and 3

k = 3

Step-by-step explanation:

2 roots: p and p+2

(x-p) (x-p-2) = x² - 4x + k

x² -2px -2x + p² + 2p = x² - 2 (p+1)x + (p² + 2p) = x² -4x + k

-2 (p+1) = -4

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p = 1   ... root 1

p' = 1+2 = 3   ... root 2

k = p² + 2p = 3

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3 years ago
Find the missing value so that the two points have a slope of -2.(1,y) and (6,-5)
Aloiza [94]

Answer:

(-5-y)/(6-1)= -2

(-5-y)/(5)= -2

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-y = -5

y = 5

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Answer:

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Read 2 more answers
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