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grigory [225]
2 years ago
8

Maria’s swim team consists of 6 sixth graders, 15 seventh graders, and 9 eighth graders. What is the probability that the captai

n will be an eighth grader? ( the total students go on the bottom of the ratio, the total number of 8th graders go on the top...reduce if possible)
Mathematics
1 answer:
Delvig [45]2 years ago
5 0

Answer:  9 out of 30  

Step-by-step explanation:

so if worng

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Choose all the answers that apply. Which of the following is an example of an ion? Ar Na+ F+ Cl-
lesya692 [45]

Answer:

Na+ and Cl- should be examples of an ion.

<Hope I answered your question>

7 0
3 years ago
Read 2 more answers
The reference angle for an angle whose measure is 260° is
Maurinko [17]
So, 260 degrees is in the 3rd quadrant, only 10 degrees away from being straight down at 270 degrees....if you have a xy axis, and draw a line segment from the origin into the 3rd quadrant, then at the endpoint of that segment, draw back up to the x-axis, your reference angle is the angle that the line segment makes with the x-axis (in this case, the negative portion of the x-axis), which is 80 degrees....since 260 degrees is 80 degrees past 180.

So your answer is 80 degrees.

Hope this helps,

Brian
8 0
3 years ago
The difference of two numbers is 5, and their sum is 17. What are the two numbers?
inysia [295]

Answer:

11 and 6

Step-by-step explanation:

11-6=5 <--- difference

11+6=17 <--- sum

3 0
2 years ago
£140 is divided between Angad, Nick &amp; June so that Angad gets twice as much as Nick, and Nick gets three times as much as Ju
kramer

Answer:

84

Step-by-step explanation:

Let's say Nick gets amount N, Angad amount A, and June amount J.

Here's what we know:

A+N+J=140

A=2*N

N=3*J.

Let's plug these values in.

N=3*J, so A+N+J=140 can now be A+3*J+J=140.

A=2*N, and N=3*J, so A=2*3*J=6*J. Then, A+3*J+J=140 is now 6*J+3*J+J=140, so 10*J=140 and J=14. N = 3*J=42 and A=2*N=84. Checking this, 14+42+84=140, so we are good to go!

4 0
3 years ago
The first term of an arithmetic sequence is –12 and the ninth
shtirl [24]

Answer:

d = \frac{7}{2}

Step-by-step explanation:

The nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₉ = 16 , then

- 12 + 8d = 16 ( add 12 to both sides )

8d = 28 ( divide both sides by 8 )

d = \frac{28}{8} = \frac{7}{2}

8 0
3 years ago
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