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3 years ago

Help Please ! It would mean a lot really (also have more questions on my page)

Mathematics

1 answer:

Lyrx [107]3 years ago

5 0

Answer:

D. Neither group of colleges satisfies her criterion.

Step-by-step explanation:

The probability of admission to at least one of the colleges in the group is the complement of the probability of being admitted to none. That probability is the product of the probabilities of rejection from the colleges in the group.

Group VW

The probabilities of rejection from V and W are 0.6 and 0.75, so the probability of rejection by both is 0.6×0.75 = 0.45. The complement of that, the probability of admission to V or W (or both) is 1 - 0.45 = 0.55, which is less than 60%.

Group XYZ

The probabilities of rejection are 0.7, 0.8, and 0.8, so the probability of rejection by all of X, Y, and Z is 0.7×0.8×0.8 = 0.448. The complement of that, the probability of admission to X, Y, or Z is 1 -0.448 = 0.552, which is less than 60%.

Since neither group of colleges will have a probability of admission of 60% or more, neither group of colleges will satisfy her criterion.

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A parabola with equation y = a(x+1)2 - 4 has a y-intercept equal to 1, what is the value of a?

Irina-Kira [14]

Answer:

the value of a is 3-y /b I think

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3 years ago

What are the solutions of 3t + 2 < 7 or -4t + 5 < 1? Graph the solutions and put each solution in interval notation.

Ghella [55]

Answer:

$\displaystyle (-∞, 2\frac{1}{3}) ∪ (1, ∞) \\ \\ 2\frac{1}{3} > t \:OR\: 1 < t$

Step-by-step explanation:

3t + 2 < 7 OR −4t + 5 < 1

- 2 - 2 - 5 - 5

___________________

$\displaystyle \frac{3t}{3} < \frac{7}{3} \:OR\: \frac{-4t}{-4} < \frac{-4}{-4} \\ \\ t < 2\frac{1}{3} \:OR\: t >1$

**Whenever you divide\multiply by a negative integer, you reverse the inequality symbol given to you initially.

Extended Information on Inequalities

≤, ≥ [dark circle with a dark line (brackets when writing in Interval Notation)]

<, > [light circle with a dashed line (parentheses when writing in Interval Notation)]

I am delighted to assist you at any time.

As you can see in the above graph, the graph is connected ALTOGETHER. Be aware that this will not ALWAYS be the case because a majourity of these graphs are seperated, pointing in OPPOSITE directions.

5 0

3 years ago

Darius is saving money to go to a gaming summer camp. He already has $95 in the bank. His goal is to earn $900 so he can pay for

ruslelena [56]

Answer:

95+35x=900

23 weeks

$48 per week

I would recommend looking at work, it will help the answers make more sense.

Step-by-step explanation:

Starting with the equation. You can see that he makes 35 dollars per week he works. Since we don't know the amount of time he works, we can use a variable. I'm going to use x. Since Darius already has $95 in his bank account, we need to make sure to include this money into the trip. So, the equation would look something like this. 95+35x=900

Let's find out how many weeks it will take Darius to reach his goal $900. First we need to subtract 95 from both sides. So, 95-95, which will cancel out, and you should be left with 35x=900-95. Now, 900-95. If you aren't good with subtracting, round 95 to 100. Now you get 800, make sure to add back the five. You should result in 805. So you are left with getting x alone.

35x=805

Divide each side by 35, so we can get x alone. 35 divided by 35 will cancel out, since it equals one. One is assumed, so you can just put x. Now it's time to divide 805 by 35. You should get 23. So that's your answer. It should take 23 weeks before Darius can pay to go to summer camp.

Since Darius wants to complete his goal six weeks earlier, he would need to be payed a different amount. The amount in his bank account won't change, nor will the amount of what we need to pay for this summer camp. So, let's rewrite the equation.

95+48x=900

Since it doesn't end up being a whole number when dividing, you can see that he might end up with extra change.

Solve like before and you should get 17. Which to check, you will see that 23-6=17.

95-95+48x=900-95

48x=805

48(17)=816

Add 95 to 816

911

Darius will not only meet his goal, but will also have extra money left over.

So, Darius needs to earn $48 per week.

4 0

3 years ago

Devon is trying to find the unit price on a 6-pack of drinks on sale for $2.99. His sister says that at that price, each drink w

Julli [10]

No, she's no good at math...

2.99/6 = about fifty cents a drink.

7 0

3 years ago

Choose the ratio that you would use to convert 2.5 meters to centimeters

nlexa [21]

Answer:

the answer is C.

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers