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Ksju [112]
3 years ago
13

Rich Borne teaches Chemistry 101. Last week he gave his students a quiz. Their scores are listed below. What is the range for th

e given data?
30 31 47 29 32 11 48 41 50 59 37 22


A: 59
B: 48
C: 2
D: 11
Mathematics
1 answer:
kolezko [41]3 years ago
6 0

Answer:

B. 48

Step-by-step explanation:

We have been given data of scores of students in a Chemistry quiz. We are asked to find the range of the given data.    

Since we know that range is the difference between highest and the lowest values of a data set. To find the range of our data set let us arrange our given data points in ascending order (least to greatest).

11, 22, 29, 30, 31, 32, 37, 41, 47, 48, 50, 59.

We can see that lowest value of our data set is 11 and highest value of data set is 59. Now we will subtract 11 from 59 to find the range of our data set.

\text{Range}=59-11=48

Therefore, range of our given data set is 48 and option B is the correct choice.

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Kamila [148]

Ans: Sunny Market

Sunny Market as $3.20/5=$0.64 while and
Happy Mart $1.58/2=$0.79
6 0
3 years ago
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Cade gets his phone bill and finds out that he is charged a 20 dollar flat rate and then must also pay .05 cents per minute. Wri
Klio2033 [76]

Answer:

1100 minutes

Step-by-step explanation:

Equation: 35=.05x-20

Why? x is the amount of minutes on his phone. Each minute is 0.05 hence 0.05x. Subtract 20 because that is the flat rate

55=.05x

x=1100

Therefore he was on his phone for 1100 minutes

7 0
3 years ago
A line passes through the points (–1, –5) and (4, 5). The point (a, 1) is also on the line.
IgorC [24]

Answer:

a = 2

Step-by-step explanation:

Let's find the equation of the line using the 2 points given.

Let's call -1 as x_1 and -5 as y_1

also, 4 as x_2 and 5 as y_2

The equation of line is :

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

<em>Let's plug the points and get the equation of the line:</em>

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\y+5=\frac{5+5}{4+1}(x+1)\\y+5=2(x+1)\\y+5=2x+2\\y=2x-3

Now, to find a, we substitute a in x and 1 in y of the equation of the line we just got:

y=2x-3\\1=2(a)-3\\1=2a-3\\2a=4\\a=\frac{4}{2}=2

4 0
3 years ago
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Which logarithmic equation is equivalent to the exponential equation below?
aleksandr82 [10.1K]

Option B: \ln 6=5 x is the correct answer.

Explanation:

The exponential equation is e^{5 x}=6

If f(x)=g(x), then \ln (f(x))=\ln (g(x))

Thus, the equation becomes

\ln \left(e^{5 x}\right)=\ln (6)

Applying log rule, \log _{a}\left(x^{b}\right)=b \cdot \log _{a}(x) and thus the equation becomes

5 x \ln (e)=\ln (6)

Since, we know that, \ln (e)=1, using this we get,

5 x=\ln (6)

Hence, the logarithmic equation which is equivalent to the exponential equation e^{5 x}=6 is \ln 6=5 x

Thus, Option B is the correct answer.

7 0
3 years ago
A laboratory technician can clean 34 pipettes every hour with an automatic washer. How many can he clean in 12 minutes? (Hint: B
Semmy [17]

Answer:

7

Step-by-step explanation:

you can do a ratio where you have 34 over 60 then cross multiply that ratio with x over 12 and 60x=408 and it equals 6.8 but I am assuming you have to round up.

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