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scZoUnD [109]
3 years ago
9

Solve this quadratic equation using the quadratic formula. x2 + 8x - 5 = 0

Mathematics
1 answer:
jasenka [17]3 years ago
7 0
X^2 + 8x - 5 = 0
a = 1, b = 8, c = -5
x = ( - 8 + - sqrt(64 - 4*1*-5))/2
x = ( -8 + - sqrt(64+20))/2
x = ( -8 + - sqrt (84))/2
x = ( - 8 + - 2sqrt21))/2
x = -4 + - sqrt21
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Answer:

Supplementary angles

x = 31

Step-by-step explanation:

Since, (3x + 25)° and 2x° are straight line angles. Therefore they are supplementary angles

(3x + 25)° + 2x° =180°

(5x + 25)° = 180°

5x + 25 = 180

5x = 180 - 25

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8 0
3 years ago
Find the inverse of the given relation.
il63 [147K]

Answer:

The answer is B.

Step-by-step explanation:

To obtain the inverse of a relation you simply interchange the x and y coordinates of each pair.

Here:

(3,1) becomes (1,3)

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4 years ago
What would x^4-10x^2+25 be equivalent to
Mademuasel [1]

Answer:

if i can get brainliest that would be great

IF Factor x4−10x2+25

x4−10x2+25

=(x2−5)(x2−5)

Answer:

(x2−5)(x2−5)

IF simplify

x4−10x2+25

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Answer:

=x4−10x2+25

7 0
3 years ago
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Total number of sheets are 12.

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\frac{9}{12}

which equals to \frac{3}{4}

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The triangle coordinate is -11
4 0
4 years ago
Read 2 more answers
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