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3 years ago

Hello so as you can see i got a ton of hw :) Helpp :')

Mathematics

2 answers:

olasank [31]3 years ago

8 0

Answer:

Step-by-step explanation:

A. 1.13 and B is 1.37

Gemiola [76]3 years ago

4 0

Answer:

A. $1.13

B. $1.37

Step-by-step explanation:

So the item costs $2.50 baseline but there is a 45% off sale.

Let P = the percentage off, x = the original cost, and y = the amount saved

Let's use the formula P% * x = y.

First we replace the variables with their values we know: 45% * 2.5 = y

(we remove the 0 on the end from 2.50 as it is redundant outside of money and this makes calculation a bit easier to read)

Next we need to convert 45% into a decimal, so we divide 45 by 100: 0.45 * 2.5 = y

Then multiply these values: 1.125 = y

We then round 1.125 to the nearest cent, and that finishes part A: We save $1.13

Now, we need to calculate the price we pay for the item, which is much simpler. Let p = the price we end up paying: 2.50 - 1.13 = p

Lastly, we need to subtract those two values: 1.37 = p

Therefore, we pay $1.37 for the item.

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How do you block someone?<br> BE SPECIFIC.

Neporo4naja [7]

Answer:

ok go to there account message them and then is says block user or report user

Step-by-step explanation:

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3 years ago

A number cube with faces labeled from 1 to 6 will be rolled once.

tresset_1 [31]

Question:

A number cube with faces labeled from 1 to 6 will be rolled once. The number rolled will be recorded as the outcome.

Give the sample space describing all possible outcomes. Then give all of the outcomes for the event of rolling a number greater than 2.

If there is more than one element in the set, separate them with commas.

Answer:

$S = \{1,2,3,4,5,6\}$

$Greater2 = \{3,4,5,6\}$

Step-by-step explanation:

Given

A roll of a 6 sided number cube

Solving (a): The sample space

This implies that we list out all number on the number cube.

So:

$S = \{1,2,3,4,5,6\}$

Solving (b): Outcomes greater than 2

This implies that we list out all number on the number cube greater than 2 i.e. 3 to 6.

So:

$Greater2 = \{3,4,5,6\}$

3 0

3 years ago

Mark A machine has two parts labeled A and B. The probability that part A works for one year is 0.8 and the probability that par

Mrrafil [7]

Answer:

0.625 = 62.5% probability that part B works for one year, given that part A works for one year.

Step-by-step explanation:

We use the conditional probability formula to solve this question. It is

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

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

The probability that part A works for one year is 0.8 and the probability that part B works for one year is 0.6.

This means that $P(A) = 0.8, P(B) = 0.6$

The probability that at least one part works for one year is 0.9.

This means that: $P(A \cup B) = 0.9$

We also have that:

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

$0.9 = 0.8+0.6 - P(A \cap B)$

$P(A \cap B) = 0.5$

Calculate the probability that part B works for one year, given that part A works for one year.

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.5}{0.8} = 0.625$

0.625 = 62.5% probability that part B works for one year, given that part A works for one year.

3 0

3 years ago

The word at the end says equation

Xelga [282]

Answer:

V=9

Step-by-step explanation:

9 times 3 equals 27 and that's how I got 9

4 0

2 years ago

How have humans contributed to the growing population of Nomura’s jellyfish?

trasher [3.6K]

Answer:

Human coastal development has also helped jellyfish thrive. The structures and construction that we have placed in the water, such as piers, marinas, oil platforms, artificial reefs, refuse, rubble, aquaculture pens and structures, etc. provide an abundance of habitats for polyps to settle on.

8 0

2 years ago