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3 years ago

Which relation is not a function?

Mathematics

2 answers:

Eva8 [605]3 years ago

6 0

Step-by-step explanation: In order for a function not to be a relation,

each x-coordinate must correspond to more than one y-coordinate.

Notice that in third relation, the 1 pairs with a 3

in one case and it pairs with a 7 in the other case.

Since each x-coordinate pairs with more than one y-coordinate,

this relation is not a function but the other ones are functions.

Ivanshal [37]3 years ago

3 0

Answer: C

Step-by-step explanation:

The X value repeats itself

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Please help lol

MatroZZZ [7]

Answer:

D. p - 2

Step-by-step explanation:

P is the number of points from last week's quiz.

If he scored 2 fewer than last week's quiz, that means it is p - 2.

5 0

3 years ago

Suppose C1;C2;C3 are three didifferent biased coins, whose probability of heads equals 0.4, 0.5, and 0.2 respectively. Suppose c

allochka39001 [22]

Solution :

$P(A \cap B) = P(\text{coin}\ C_1 \text{ chosen and 4 heads in 10 trails})$

$= \frac{1}{3} \times ^{10}C_4 \times 0.4^4 \times 0.6^6$

= 0.0836

P(B)= P(coin $C_1$ chosen and 4 heads in 10 trails) + P(coin $C_2$ chosen and 4 heads in 10 trail) + P(coin $C_3$ chosen and 4 heads in 10 trail)

$=\frac{1}{3}\times ^{10}C_4 \times 0.4^4 \times 0.6^6 + \frac{1}{3}\times ^{10}C_4 \times 0.5^4 \times 0.5^6 + \frac{1}{3}\times ^{10}C_4 \times 0.2^4 \times 0.8^6$

$=0.0836+0.0684+0.0294$

$=0.1813$

P(A|B) = $\frac{P(A \cap B)}{P(B)}$

$=\frac{0.0836}{0.1813}$

$=0.4611$

5 0

3 years ago

PLEASE HELP WITH THIS ONE QUESTION

poizon [28]

Answer:

2nd, 3rd and 4th answers are true

Step-by-step explanation:

$1)false \\ \\ 2)16 {x}^{2} - 64 {y}^{2} \\ {4}^{2} {x}^{2} - {8}^{2} {y}^{2} \\ (4x - 8y)(4x + 8y) = > true \\ \\ 3) {x}^{2} - 169 \\ {x}^{2} - {13}^{2} \\ (x + 13)(x - 13) = > true \\ \\ 4) {9x}^{2} - 1 \\ {3}^{2} {x}^{2} - {1}^{2} \\ (3x - 1)(3x + 1) = > true \\ \\ 5)false$

6 0

3 years ago

What is 5 to the negative fourth power

damaskus [11]

You can write 5 to the negative fourth power as 5^(-4). In cases, when you have negative power, you just have to put 5^4 in the denominator. So, instead of 5^(-4), you have 1/(5^4).
5^4 equals to 625.
In the last step you have to divide 1 by 625.

The result is 0.0016.

8 0

4 years ago

Read 2 more answers

Two angles are supplementary. if the larger angle is 3 degrees more than twice the smaller angle then how big is each angle. wri

Margaret [11]

Two angles are supplementary when they add up to 180 degrees.

x = smaller angle
2x+3 = larger angle

x + 2x + 3 = 180
3x = 180 - 3
3x = 177
x = 177/3
x = 59° ← smaller angle

2x + 3 = 2*59 + 3 = 121° ← larger angle

4 0

3 years ago