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konstantin123 [22]
3 years ago
14

If two events have probabilities which sum to 1, they are called ________ events.

Mathematics
2 answers:
Alenkasestr [34]3 years ago
8 0
<span>An event with probability 0 never occurs. An event with probability 1 occurs on every trial</span>
Olenka [21]3 years ago
7 0
Variables maybe I'm 95% percent sure
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2/3x - 1/2y = 3
Blizzard [7]
2/3x - 1/2y = 3      |multiply both sides by 6
4x - 3y = 18

1/2x + y = 5      |multiply both sides by 2
x + 2y = 10

Answer: B) 4x - 3y = 18 and x + 2y = 10
4 0
3 years ago
A triangle was dilated by a scale factor of 6. If sin aº
Pavlova-9 [17]

Answer:

24 units

Step-by-step explanation:

A triangle was dilated by a scale factor of 6. If sin a° = four fifths and segment DE measures 30 units, how long is segment EF?

triangle DEF in which angle F is a right angle, angle D measures a degrees, and angle E measures b degrees

15.5 units

24 units

30 units

37.5 units

From the description:

angle D measures a degrees

opposite to angle D is side EF

side DE (which measures 30 units) is the hypotenuse of the triangle.

We also know that

\sin (a) = \frac{4}{5}

\sin (a) = \frac{opposite}{hypotenuse}

From definition:

\sin (a) = \frac{opposite}{hypotenuse}

Replacing:

\frac{4}{5} =\frac{ EF}{DE} \\\\EF = \frac{4}{5} *DE\\\\EF = \frac{4}{5} *30 \\\\= 24 units

8 0
4 years ago
Solve for x. 4 x plus 1 equals 9 A. -2 B. 2 C. 3 D. -3
NeX [460]

Answer: C

Step-by-step explanation:

4x + 1 = 9

4x + 1 -1 = 9-1

4x=8

8/4=2

6 0
3 years ago
Read 2 more answers
logan had a bank account balance of 287 he then deposit 35 and went on a shopping trip if he spends 78 what is his new balance a
gizmo_the_mogwai [7]
The answer is 244 because you add 35 to 287 then subtract 78 and it equals 244
6 0
4 years ago
“All You Can Eat Tuesdays” at a local café offers a full salad bar that costs $10 for children and $15 for adults. Last Tuesday,
erma4kov [3.2K]

Answer:

10x + 15y = 180

Step-by-step explanation:

hope i helped 3 days later lol srry

3 0
3 years ago
Read 2 more answers
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