Answer:
a) 0.72
b) 0.98
Step-by-step explanation:
We are given the following information in the question:
P(passing maths exam) = P(m) = 0.9
P(passing Spanish exam) = P(s) = 0.8
It is assumed that the results of the two exams are independent of each other.
a) probability that she passes both exams
By assumption of independence, we can write:
0.72 is the probability that Josie will pass both the exams.
b) probability that Josie passes at least one of the exam
0.88 is the probability that Josie passes at least one of the exams.
Answer:
There are a total of possible 1820 results.
Step-by-step explanation:
Since there are two competitions, one for boys and one for girls, and we want all the possible results we will calculate the possible combinations for the boys and multiply them by the possible combinations for the girls. This is shown below:
Total number of possible results:
Answer:
<h2>17</h2>
Step-by-step explanation:
<h2>
<em><u>SINCE</u></em><em><u> </u></em><em><u>THE</u></em><em><u> </u></em><em><u>LINES</u></em><em><u> </u></em><em><u>ARE</u></em><em><u> </u></em><em><u>PARALLEL</u></em><em><u> </u></em><em><u>THEN</u></em><em><u> </u></em><em><u>ANGLE</u></em><em><u> </u></em><em><u>A</u></em><em><u> </u></em><em><u>AND</u></em><em><u> </u></em><em><u>ANGLE</u></em><em><u> </u></em><em><u>B</u></em><em><u> </u></em><em><u>ARE</u></em><em><u> </u></em><em><u>COREESPONDING</u></em><em><u> </u></em><em><u>TO</u></em><em><u> </u></em><em><u>EACH</u></em><em><u> </u></em><em><u>OTHER</u></em><em><u>.</u></em></h2><h3>
<em>A</em><em> </em><em>=</em><em> </em><em>7</em><em>x</em><em> </em><em>+</em><em> </em><em>2</em><em>4</em><em> </em></h3><h3>
<em>B</em><em>=</em><em> </em><em>3</em><em>x</em><em>+</em><em> </em><em>9</em><em>2</em></h3><h3>
<em>A</em><em>=</em><em>B</em></h3><h3>
<em>7</em><em>x</em><em> </em><em>+</em><em> </em><em>2</em><em>4</em><em> </em><em>=</em><em> </em><em>3</em><em>x</em><em> </em><em>+</em><em> </em><em>9</em><em>2</em><em> </em></h3>
<em>7</em><em>x</em><em> </em><em>-</em><em> </em><em>3</em><em>x</em><em> </em><em>=</em><em> </em><em>9</em><em>2</em><em> </em><em>-</em><em> </em><em>2</em><em>4</em>
<em>4</em><em>x</em><em> </em><em>=</em><em> </em><em>6</em><em>8</em>
<em>x</em><em> </em><em>=</em><em> </em><em>6</em><em>8</em><em> </em><em>/</em><em> </em><em>4</em>
<em>x</em><em> </em><em>=</em><em>1</em><em>7</em>
Answer:
The first one. L (t) = 0.37t + 39.67
Step-by-step explanation:
The "0.37t" is about 0.37 years of life expectancy added for each year that passes the "+ 39.67" is the starting life expectancy that has to be added to whatever the rising trend may be. just multiply 0.37 by 20 and youl have the rising trend.
Answer:
The rate of change is $15/day
Step-by-step explanation:
The rate of change, using the points (1,60) and (5,120)
m= (y2-y1) / (x2-x1)
= (120-60)/ (5-1)
= 60/4
= 15
The rate of change is $15/day
