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SVETLANKA909090 [29]
3 years ago
13

What is the value of a and b ?

Mathematics
1 answer:
stealth61 [152]3 years ago
4 0

Answer:

what are the positions of 56 and 100 in the circle

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If A is between X and Y, and XA = 3x, AY = 2x + 5, and XY = 60, find.<br> the value of 'X'.
andreyandreev [35.5K]

Answer:

x = 13

Step-by-step explanation:

3x + 2x + 5 = 60

5x + 5 = 60

5x = 65

x = 13

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3 years ago
A sixteen-sided number cube has the numbers 1 through 16 on each face. Each face is equally likely to show after a roll. What is
KonstantinChe [14]
Probaility in general is defined as the ratio of positive outcomes over the total number of outcomes.

In the first example, the total outcomes are 16; let us count the positive ones. There are 8 even numbers from 1-16. The prime numbers are 2,3,5,7,11,13. Out of those, only 5 are odd. Hence, in total there are 13 positive outcomes. Thus, the probability is 13/16=81.25%

Let's restrict the problem to the students that studied for the exam; the proportion is 0.57 of the total students. 0.52 of the total students studied and saw an increase in their exam. Hence, the probability that a student who studied saw an increse is 0.52/0.57 (here a positive outcome is the proportion that saw an increase and the total outcomes are all the students that studied). 0.52/0.57=91.22%
5 0
4 years ago
Read 2 more answers
Scores on the final in a statistics class are as follows.
IgorLugansk [536]

Answer:

Kindly check explanation

Step-by-step explanation:

Calculate the 25th, 50th, and 75th percentiles.

b. Calculate the interquartile range.

c. Construct a boxplot. Are there any outliers?

Reordered data:

25, 40, 52, 55, 60, 70, 70, 72, 74, 75, 75, 80, 80, 85, 85, 86, 87, 90, 92, 99

25 th percentile :

1/4 (n + 1)th, tetm

n = 20

1/4(21) = 5.25th term

(5 + 6) th term / 2

= 65

50th percentile :

1/2 (n + 1)th, tetm

n = 20

1/2(21) = 10.5th term

(10 + 11) th term / 2

= 75

75th percentile:

3/4 (n + 1)th, tetm

n = 20

3/4(21) = 15.75th term

(15 + 16) th term / 2

= 85.5

Interquartile range :

Q3 - Q1

75th percentile - 25th percentile

85.5 - 65

= 20.5

25 is an Outlier

7 0
3 years ago
is the relationship between the amount of the orange juice concentrate c and the amount of water w proportional? Explain. Zoe us
cluponka [151]

Answer:  

B.12 ounces

Step-by-step explanation:

step 1

Find out the ounces of orange juice concentrate used yesterday

Let

x ----> ounces of orange juice concentrate used yesterday

y ---> ounces of water used yesterday

we know

that

----> equation A

----> equation B

substitute equation B in equation A

solve for x

step 2

today she wants to make twice as much orange juice.

To find out how much orange juice concentrate she needs, multiply the ounces of orange juice concentrate used yesterday by 2

so

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3 years ago
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taurus [48]
8.8 squared + 9.5 squared = square root 12.94 rounded 12.1
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