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Delvig [45]
3 years ago
14

What are the solutions to the equation x^2+6=40?

Mathematics
1 answer:
Andreas93 [3]3 years ago
5 0

Answer:

x = 4  or x = -10   for  equation x^2 + 6x = 40

Step-by-step explanation:

x^2 + 6 = 40

x^2 = 40 - 6

x^2 = 34

x = root(34) or  x = -root(34)   but this is not in the answer choice.

is it  x^2 + 6x = 40

x^2 + 6x + 9 = 40 +9

(x + 3)^2 = 49

x + 3 = 7  or  x + 3 = -7

x = 4  or x = -10

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Point D (-1,5) is reflected across the x-axis which statements about D are true
mamaluj [8]

Answer:

When a point is reflected across the x axis, it has the same x axis but the y axis is multiplied by -1. Think about the x axis as a mirror and the point is projected across the x axis.

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Step-by-step explanation:

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3 years ago
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I don't understand this, please help ​
dimulka [17.4K]

Answer:

∠2 = 150°, it is a supplementary angle to 30°

∠3 = 30°, it is an alternate angle to 30°

∠4 = 150°, it is a supplementary angle to 30°

∠5 = 30°, it is an alternate angle to 30°

∠6 = 150°, it is a supplementary angle to 30°

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6 0
3 years ago
Help please :) <br> V74 <br> V74
Lelechka [254]

Answer:

x =10

Step-by-step explanation:

Using the pythagoras theorem om one of the right triangle;

(√74)² = (x/2)²+7²

74 = (x/2)²+49

(x/2)² = 74 - 49

(x/2)² = 25

Square root both sides

√ (x/2)² = ±√25

x/2 = ±5

x = 2 * ±5

x = ±10

Hence the value of x is 10

8 0
3 years ago
Charlotte and Edgar's ages add up to 22. Charlotte is one year
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Answer: Charlotte's 15 and Edgar's 7

Step-by-step explanation:

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14+1 = 15

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8 0
2 years ago
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