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anzhelika [568]
3 years ago
7

The sum of a number and its square is 42. Which equation can be used to find the two numbers for which this is true?

Mathematics
1 answer:
tankabanditka [31]3 years ago
6 0

Answer:

x² + x = 42

Step-by-step explanation:

Let the number be x then the square of this number is x²

Sum and equate to 42, that is

x² + x = 42

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ella [17]

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c < 8

Step-by-step explanation:

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ANSWER:
_________

The last choice ( y = 2/5x + 3)

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The line is going up which means the slope is positive

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4 0
3 years ago
1) Use the Euclidean Algorithm to nd the greatest common divisor of 71407 and 2020. (Write down all of the steps, so that you ar
Olenka [21]

Answer:

Step-by-step explanation:

We have

71407 = 2000(35)+1407\\2000 = 1407+1(593)\\1407= 2(593) + 221\\593 = 2(221) = 151\\221=151+70\\151=2(70)+11\\70 = 6(11)+4\\11=2(4)+3\\4 = 3+1\\3 = 3(1)+0\\

So we find GCD = 1

2) By back substitution we get

71407 (543) - 19387(2000) =1

So x = 543 and y = -19387

Because we got 71407 (543) - 19387(2000) =1

y cannot be positive

y can only be negative

8 0
3 years ago
Find the value of c such that the point P(a, b) lies on the graph of the function f.
Alexxandr [17]
f(x)=x\sqrt{16-x^2}+c;\ P(3;\ 6)\to x=3\ and\ y=6\\\\subtitute\\\\6=3\sqrt{16-3^2}+c\\\\3\sqrt{16-9}+c=6\\\\3\sqrt7+c=6\ \ \ \ |subtract\ 3\sqrt7\ from\ both\ sides\\\\\boxed{c=6-3\sqrt7}
4 0
4 years ago
If one zeroes of the polynomial f(x) = 4x² - 8kx + 8x -9 is negative of other,
larisa86 [58]

Answer:

-1 and -2

Step-by-step explanation:

f(x) = 4x² − 8kx + 8x −9

f(x) = 4x² − 8(k−1)x − 9

If one root of f(x) is the opposite of the other, then f(x) must be a difference of squares, which means -8(k−1) = 0.

-8(k−1) = 0

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Therefore, the other polynomial is:

x² + 3x + 2

(x + 1) (x + 2)

The zeros are -1 and -2.

3 0
3 years ago
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