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3 years ago

HELP ME NOW PLSSSSSS

Mathematics

2 answers:

bazaltina [42]3 years ago

6 0

Answer:

5/9

Step-by-step explanation:

Hello,

To continue on the same logic as for other questions, let s check the possible outcomes, they are 9

First draw second draw sum of the value Is it >= 30c?

dimes dimes 20

dimes nickels 15

dimes quarters 35 Yes

nickels dimes 15

nickels nickels 10

nickels quarters 30 Yes

quarters dimes 35 Yes

quarters nickels 30 Yes

quarters quarters 50 Yes

For only 5 the sum is >= 30c

so the probability is 5/9

hope this helps

Xelga [282]3 years ago

3 0

Answer:

A-2/9

Step-by-step explanation:

assuming he has 3 each of nickles, dimes and quarters, because its says "equal number of coins each)

3x3=9

he only made two draws and he and needs 2 coins to make $.30. He could chose 1 nickle and 1 quarter.

so I think it would be 2/9

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Solve the proportion<br> 7/2=x/16

alina1380 [7]

X=56
7÷2=3.5 and 56÷16=3.5

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3 years ago

Solve |1 - 4x| > 7 and Solve |5x - 1| < 1<br> PLEASE EXPLAIN!

denis-greek [22]

Since |1-4x|>7 it can also be 1-4x<-7
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the |5x-1|<1 interval notation is (-2/5 ,0)

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3 years ago

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4 years ago

Salama makes fruit baskets with oranges and bananas. She uses between 8 and 16 oranges and bananas in a ratio of 3 oranges to 2

Studentka2010 [4]

Answer: There are 6 oranges and 4 bananas and there are 9 oranges and 6 bananas.

In both the cases, the ratio will be 3:2.

Step-by-step explanation:

Since we have given that

Salama makes fruit baskets with oranges and bananas.

Ratio of oranges to bananas is 3:2.

And she uses between 8 and 16 oranges and bananas.

We only take those number which is multiple of 5 between 8 and 16,

i.e. 10 and 15.

1) Let the total number of oranges and bananas = 10

Then, number of oranges is given by

Number of bananas is given by

2) Let the total number of oranges and bananas = 15

Then, number of oranges is given by

Number of bananas is given by

Hence, there are 6 oranges and 4 bananas and there are 9 oranges and 6 bananas.

In both the cases, the ratio will be 3:2.

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3 years ago

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Dafna1 [17]

Answer:

The right answer is:

"The one-day SAT prep class produces statistically significant improvements in SAT writing performance."

Step-by-step explanation:

The P-value gives us the probability of getting the sample results, given that the null hypopthesis is true. That is why, it the P-value is small enough (smaller than the level of significance) is an indicator that the null hypothesis may not be true.

In this case, the P-value (0.028) is smaller than the level of significance (0.05), so the null hypothesis is rejected and we can conclude that there is significant difference for the studentes that take the SAT prep-class.

The population only include the students that take teh SAT prep-class, so it is not useful to compare to the performance of students that didn't take the class.

The right answer is:

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8 0

3 years ago