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3 years ago

5

Pls I need help I’m begging u

1 answer:

Airida [17]3 years ago

7 0

Answer:

B

Step-by-step explanation:

B has a constant rate of change because it changes by 30 every 2, or 15 every 1. Hope this helped :).

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19. Use the unit circle to find the value of tan 315º.<br> Show work pls.

Free_Kalibri [48]

Answer: -1

Step-by-step explanation:

First change tan(315) to:

$\frac{\sin(315)}{\cos(315)}$

Then evaluate the sine and cosine function. What is the y component of 315 degrees? What is the x component of 315 degrees?

$-\frac{\sqrt{2} }{2} /\frac{\sqrt{2} }{2} =-1$

7 0

3 years ago

Given log4(3) =0.7925 and log4(5) =1.1610, use log properties to find log4(300).

Ede4ka [16]

Answer:

4.1145

Step-by-step explanation:

You can use the following formula to solve this kind of problems,

$log_{a}(b) + log_{a}(c) = log_{a}(bc)$

So, let's start of with log4_(300). Since the question have already gave log4_(3) =0.7925 and log4_(5) =1.1610. It means that you have to split the 300 into the simplest form where almost all of the numbers are 3 and 5.

$log_{4}(300) = log_{4}(4 \times 5 \times 3 \times 5) \\ = log_{4}(4) + log_{4}(5) + log_{4}(3) + log_{4}(5) \\ = 1 + 1.1610 + 0.7925 + 1.1610 \\ = 4.1145$

5 0

3 years ago

Which term does not represent the same data as the others?

Ksenya-84 [330]

Answer: x-value

Step-by-step explanation:

the x-value is the input, domain and 1st element.

8 0

3 years ago

Find P(Y|B) from the information in the table.

vova2212 [387]

Answer:

0.4

Step-by-step explanation:

The table with correct formatting is attached in the image below.

We have to find P(Y | B). This is a conditional probability i.e. probability of Y given B.

The formula of conditional probability for two event A and B is:

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

So, for the given case, the formula would be:

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

P(Y ∩ B) indicates the probability of Y and B occurring together. Y and B occur together 34 times out of total of 324, so:

$P(Y \cap B)=\frac{34}{324}$

P(B) indicates the probability of occurrence of B. B occurs 85 times in a total of 324. So,

$P(B)=\frac{85}{324}$

Using these values in the formula of conditional probability, we get:

$P(Y \cap B)=\frac{\frac{34}{324}}{\frac{85}{324} }\\\\ =\frac{34}{85}\\\\ =0.4$

Thus, the value of P(Y|B) is 0.4

8 0

3 years ago

Read 2 more answers

Elias and Niko are polishing the silver at the heritage museum. Elias could polish all the silver himself in 40 minutes. That ta

stepan [7]

Answer:

We let x be the number of hours both could the job together.

The fraction of the job done by Elias is

x/40

The fraction of the job done by Niko is

x/50

Together they would be able to finish the job

x/40 + x50 = 1

x = 1 / (1/40 + 1/50)

x = 22.22 min

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers