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2 years ago

P(A) = .6, P(B) = .3, P(

Mathematics

1 answer:

In-s [12.5K]2 years ago

8 0

Answer:

0.4

Step-by-step explanation:

P(A)=0.6

P(B)=0.3

P(B∩A)=0.5

P(A∪B)=P(A)+P(B)-P(A∩B)

P(A or B)=P(A∪B)=0.6+0.3-0.5=0.9-0.5=0.4

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Subtract 4/5-1/5 i will give yall 87 points if yall answer

meriva

Answer:

$\frac{3}{5}$

Step-by-step explanation:

$\frac{4}{5}$ - $\frac{1}{5}$ = $\frac{3}{5}$

When the denominator of both fractions are the same, you can just calculate the numerators while leaving the denominator alone. In this case, 4-1=3 and the denominator is 5.

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3 years ago

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Use the first three triominoes to find the missing number in the fourth triomino.

Marat540 [252]

Answer:

The answer is 24

Step-by-step explanation:

The given triomino follows as sequence that,

The upper no. × The right no. -The left no. = The middle no

As we can see this by analyzing the three triominoes

first triominoes

4 × 2 - 4 =4

second triominoes

6×1 - 5 = 1

third triominoes

3×4 -0 = 12

∵ Finding fourth triominoes

9×3 - 3 = 24

 ∴ The answer is 24

8 0

3 years ago

Write the equation of a line that passes through (-2,6) and 1,-6)

Firlakuza [10]

Find slope first
(-6-6)/(1+2) = -12/3 = -4
Format: y = -4x + b
Plug in one point
6 = -4(-2) + b
6 = 8 + b, b = -2
Answer: y = -4x - 2

6 0

3 years ago

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Help me please. Stuck on this question.

Aneli [31]

Since you know that the top angle is 90 degrees and the bottom is 45 that tells you that the only other angle has to be 45 degrees which means the side it opens up into is also 3radical2 so then you do a^2+b^2=c^2 and you get 4radical3

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3 years ago

Y = 4x - 5 and (3,4) (7, 3) A. parallel B. perpendicular D. neither

s344n2d4d5 [400]

Answer:

The lines are perpendicular. Option B.

Explanation:

Equation of the Line

One of the characteristics of the line is its slope. It can be determined in two ways:

* From the equation y=mx+b, the m is the slope. The given equation is y=4x-5. Thus, the slope of this line is m=4.

* Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

$\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

The points are (3,4) and (7,3), thus the slope is:

$\displaystyle m=\frac{3-4}{7-3}=-\frac{1}{4}$

A. For two lines to be parallel, their slopes must be equal. Since m1=4 and m2=-1/4, the lines are not parallel. Incorrect

B. For two lines to be perpendicular, their slopes must meet the condition:

$m1*m2=-1$

4*(-1/4)=-1

Both lines are perpendicular. Correct choice

D. Since choice B. is correct, this cannot be true. Incorrect

5 0

3 years ago