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Sholpan [36]
3 years ago
12

I need help with this.....​

Mathematics
1 answer:
Hatshy [7]3 years ago
4 0

Answer:

55 degrees

Step-by-step explanation:

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Consider the following pair of equations:
Sloan [31]
-2x+8 = x-1 substitute for one of the y

-8. -8 solve for x

-2x = x -9

+x =. +x

-1x = -9

/-1. =. /-1

x=9

y=-2(9)+8 now solve for y by putting x

y= 18 +8 in the one of the original

y= 26 equations.

(9,26)





3 0
2 years ago
Read 2 more answers
Write the equation in slope intercept form. what are the slope and y-intercept?
Leno4ka [110]
Slope intercept is basically solve for y
y=mx+b
m=slope
b=yintercept

-3x-10y=7
add 3x to both sides
-10y=3x+7
divide both sides by -10
y=-3/10x-7/10

slope is -3/10
yintercept is -7/10 or at point (0,-7/10)
5 0
2 years ago
Software to detect fraud in consumer phone cards tracks the number of metropolitan areas where calls originate each day. It is f
pashok25 [27]

Answer:

0.999987

Step-by-step explanation:

Given that

The user is a legitimate one = E₁

The user is a fraudulent one = E₂

The same user originates calls from two metropolitan areas  = A

Use Bay's Theorem to solve the problem

P(E₁) = 0.0131% = 0.000131

P(E₂) = 1 - P(E₁)  = 0.999869

P(A/E₁) = 3%  = 0.03

P(A/E₂) = 30% = 0.3

Given a randomly chosen user originates calls from two or more metropolitan, The probability that the user is fraudulent user is :

P(E_2/A)=\frac{P(E_2)\times P(A/E_2)}{P(E_1)\times P(A/E_1)+P(E_2)\times P(A/E_2)}

=\frac{(0.999869)(0.3)}{(0.000131)(0.03)+(0.999869)(0.3)}

\frac{0.2999607}{0.00000393+0.2999607}

\frac{0.2999607}{0.29996463}

= 0.999986898 ≈ 0.999987

6 0
3 years ago
Select all true statements about the line and its equation.
gulaghasi [49]

Answer:

the first, second and fifth ones

Step-by-step explanation:

8 0
2 years ago
Evaluate tan(cos^-1(-15/17))
IrinaK [193]

The answer is -8/15.  This is a for sure correct answer.

7 0
3 years ago
Read 2 more answers
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