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andrew11 [14]
3 years ago
10

eli takes a typing test and types all 300 words in 1/10 hour.he takes the test a second time and types the words in 1/12 hour wa

s he faster or slower on the second attempt?explain
Mathematics
1 answer:
Leokris [45]3 years ago
5 0
He typed faster the second time because if you multiple 60 minutes by 1/10 and 1/12 of and hour separately, you get a smaller answer with 1/12 than by 1/10, and thereby a smaller answer.


Hope this helps!
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A jet fighter is capable of reaching speeds up to 1.5 x 10^3 miles per hour. A typical passenger plane can reach speeds of appro
Volgvan

Answer:

3 times faster

Step-by-step explanation:

\frac{1.5(10)^{3} }{5.0(10)^{2}} = \frac{1.5(10)}{5} = \frac{15}{5}  = 3 times faster

5 0
3 years ago
Consider the equation 4x + 1 = 2x + 5
Darya [45]

(a) Without solving the equation we can't determine whether its true or false.

(b) If x = 3

4x + 1 = 2x + 5

4(3) + 1 = 2(3) + 5

12 + 1 = 15 + 5

13 = 20

No, if x = 3, the equation will not be true.

(c) 4x + 1 = 2x + 5

4x - 2x = 5 - 1

2x = 4

x = 4/2

x = 2

This shows that x = 2 makes the equation true.

8 0
4 years ago
Calculate the pay for the following day of a weekly time card given a wage $13/hr <br> HELP PLEASE
dlinn [17]

Answer:

$130

Step-by-step explanation:

The person gets $13 and hour and works for 10 hours 15 minutes. You round down to 10 hours and 10x13=130.

Hope this helps.

4 0
3 years ago
Why is the standard deviation usually preferred over the​ range?
konstantin123 [22]
Standard deviations, σ, is generally preferred over range. Reason being, it is calculated from all the data and when there is outliers it will not be impacted as much as the range. It is great to not also that, The IQR is preferred to the standard deviation when the distribution is very highly skewed or when there are severe outliers, because the IQR is less sensitive to this features than standard deviation.
4 0
3 years ago
Write an equation for a rational function with:
Alekssandra [29.7K]

Answer:

y=\frac{\frac{16}{3}(x+1)(x+6)}{(x-1)(x-4)}

Step-by-step explanation:

Because x=1 and x=4 are the solutions to x-1=0 and x-4=0, then we have (x-1)(x-4) in the denominator.

Because (-1,0) and (-6,0) are the solutions to x+1=0 and x+6=0, then we have (x+1)(x+6) in the numerator.

Now we have y=\frac{a(x+1)(x+6)}{(x-1)(x-4)} where we plug in (0,8) to solve for a:

y=\frac{a(x+1)(x+6)}{(x-1)(x-4)}

8=\frac{a(0+1)(0+6)}{(0-1)(0-4)}

8=\frac{6a}{4}

32=6a

\frac{32}{6}=a

\frac{16}{3}=a

Therefore, the equation for the rational function is y=\frac{\frac{16}{3}(x+1)(x+6)}{(x-1)(x-4)}

8 0
2 years ago
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