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NemiM [27]
3 years ago
15

Find x so the distance between (x, 2) and (2, 4) is the square root of 13. How do you work this?

Mathematics
1 answer:
kap26 [50]3 years ago
4 0
d= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}  \\  \\  \sqrt{13} =  \sqrt{(2-x_1)^2+(4-2)^2}  \\  \\  \sqrt{13} =  \sqrt{(2-x_1)^2+(2)^2}  \\  \\  \sqrt{13} =  \sqrt{(2-x_1)^2+4}  \\  \\  \sqrt{13} =  \sqrt{(2-x_1)*(2-x_1)+4}  \\  \\ \sqrt{13} =  \sqrt{4-2x_1-2x_1+(x_1)^2+4} \\  \\ (\sqrt{13})^2 =  (\sqrt{-4x_1+(x_1)^2+8})^2 \\  \\ 13=(x_1)^2-4x_1+8 \\  \\ (x_1)^2-4x_1-5=0 \\  \\ (x_1-5)(x_1+1)=0 \\  \\ x_1=5,x_1=-1

x can either equal 5 or -1
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Find the slope and y-intercept of equation y= 10x + 18
pickupchik [31]

Answer:

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Step-by-step explanation:

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2 years ago
At an antique boat show, 90% of the boats are made of a natural, polished wood. 75% of the boats have some chrome accents on the
nadya68 [22]

Answer:

0.933 ; not independent

Step-by-step explanation:

Given :

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P(B) = 0.75

P(AnB) = 0.7

1.) probability of natural wood Giveb that it has chrome accent

P(A|B) = P(AnB) / P(B)

P(A|B) = 0.7 / 0.75

P(A|B) = 0.933

2.)

For an independent event :

P(AnB) = p(A) * p(B)

P(AnB) = 0.9 * 0.75 = 0.675

However, p(AnB) Given here is 0.7, thus the event aren't independent

3 0
3 years ago
Evaluate.<br> 13[42–(2+4)]
german

Answer:

468

Step-by-step explanation:

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=13 (36)

=13×36

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3 years ago
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