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sergey [27]
3 years ago
11

A science class has 3 girls and 1 boy in the seventh grade and 5 girls and 5 boys in the eighth grade. the teacher randomly sele

cts a seventh grader and an eighth grader from the class for a competition. what is the probability that the students she selects are both boys
Mathematics
1 answer:
brilliants [131]3 years ago
8 0
In the science class,
there are 3 girls and 1 boy (grade 7)
and          5 girls and 5 boys (grade 8)
There is a total of 14 pupils being 8 girls and 6 boys
The probability of choosing a boy will be \frac{6}{14}
Which can be simplified into \frac{3}{7} by dividing 2 from the numerator as well as the denominator.
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Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of c
Margarita [4]
Set up a proportion:

\frac{8}{270} = \frac{x}{72.5}

The numerator represents fluid ounces of milk, and the denominator represents milligrams of calcium.

Simplify the first fraction to make multiplication easier:

\frac{8}{270} \div  \frac{2}{2} =  \frac{4}{135}
\frac{4}{135} = \frac{x}{72.5}

Cross multiply the fractions:

72.5 * 4 = 290
135x = 290

Divide both sides by 135 to get x by itself:

290 \div 135 = 2.1
x = 2.1


2.1 fluid ounces of milk provide 72.5 milligrams of calcium.
3 0
3 years ago
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A store had 175 cell phones in the month of January. Every month, 10% of the cell phones were sold and 10 new cell phones were s
kotegsom [21]
Thank you for posting your question here at brainly. Feel free to ask more questions.  

The best and most correct answer among the choices provided by the question is <span>(D) f(n) = 0.9 * f(n - 1) + 10, f(0) = 175, n > 0 .</span> <span>       
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Hope my answer would be a great help for you.</span>
4 0
3 years ago
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Two planes left an airport at noon. One flew east at a certain speed and the other flew west at twice the speed. The planes were
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The plane flying west was flying at 600 miles per hour and the plane flying east was flying 300 miles per hour
7 0
3 years ago
HELP PLSSSSSESSSSSSSSSSSS
bekas [8.4K]

Answer:

Step-by-step explanation:

10(3)+2(10)(4)+2(3)(4)=30+80+24

                                =134

8 0
2 years ago
Guided Practice
dmitriy555 [2]

Answer:

C.

discrete data

Step-by-step explanation:

The given function is:

                                                  C(p) = 0.95p

Where p represents the number of bolts purchased. We can calculate the cost based on the number of bolts purchased.

An important distinction between discrete and continuous data is that the continuous data is measured while discrete data is calculated or counted. Since we are obtaining the data by calculation, it must be discrete data.

The function can take on only specific values. For example for p=0, C is 0 and for p=1 the value of C is 0.95. The function cannot take any value in between 0 and 0.95. This is a characteristic of discrete function. A continuous function can take all possible values in an interval.  

Therefore, the answer to this question is: The Function models discrete data.

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2 years ago
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