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Marta_Voda [28]
3 years ago
5

HURRY

Mathematics
2 answers:
mixer [17]3 years ago
5 0
Here are 18 brown haired students out of 40 students 18/40=0.45
0.45 

pshichka [43]3 years ago
3 0

Answer: 0.45

Step-by-step explanation:

From the given table, the number students have brown hair = 10+8=18

The total number of students =4+5+4+6+10+8+2+1=40

Now, the probability that a student has brown hair is given by :-

P(Br)=\frac{\text{Students with brown hair}}{\text{Total students}}\\\\\Rightarrow\ P(Br)=\frac{18}{40}=0.45

Hence, the probability that a student has brown hair is 0.45

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Marat540 [252]

Answer:

15.2

Step-by-step explanation:

3 0
3 years ago
How can i simplify this function?<br> Y=8x+5-2x-1. Please help me.
ICE Princess25 [194]
First you combine 8x and -2x which is -6x
and 5+-1=4   
y=-6x+4
5 0
3 years ago
What are the degree and leading coefficient of the polynomial? <br><br> - 2u + 12u ^ 2 + 8 - u ^ 9
USPshnik [31]

Answer:

Step-by-step explanation:

hello :

- 2u + 12u ² + 8 - u ^ 9 = -1u ^ 9+12u² -2u+8...standard form

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7 0
3 years ago
Solve the following quadratic function
earnstyle [38]

Answer:

x = 10/7 or x = -10/7

Step-by-step explanation:

By using the completing the squares method, we have to divide the coefficient of the x term by 2, square it and add to both sides

From what we have here, the coefficient of the x term is 0

Thus, we have it that;

0 = 100 - 49x^2

We can proceed to use the difference of two squares here;

Whereby;

a^2 - b^2 = (a-b)(a + b)

0 = (10-7x)(10+7x)

10 - 7x = 0 or 10 + 7x = 0

7x = 10 or 7x = -10

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4 0
3 years ago
Emily designed a robot that could climb down steps. She drew a graph to show the results from a test of her new robot. The graph
mamaluj [8]
The answer is A.) \frac{-1}{10}x+15 

To find this answer the first thing we need to do is look at the equation of a straight line: y=mx+b

What I did first was look at b. b represents the y-intercept. By looking at the graph we can tell that the line crosses the y-axis at (0,15), so the y- intercept is 15. So our answer should at least have b=15. Using this we can go ahead and eliminate answers B & C 

Next we look at the slope (m). One way you can figure out slope is using the rise over run method. Since this line has a negative slope our rise should be a negative number. So, the only answer that should be left is A.) \frac{-1}{10}x+15 
7 0
3 years ago
Read 2 more answers
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