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4 years ago

If I travel 12 miles in 1/3 of an hour. What is my speed

Mathematics

1 answer:

Keith_Richards [23]4 years ago

8 0

Answer: 36 miles per hour (mph)

We have 12 miles traveled in 1/3 of an hour

Multiply both values by 3 so that the "1/3 hr" becomes "1 hr"

12*3 = 36

(1/3)*3 = 1

So you travel 36 miles in one hour, ie your speed is 36 miles per hour.

You can use this ratio to help

12 miles : 1/3 hr

3*(12 miles) : 3*(1/3) hr

36 miles : 1 hr

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The shape of a quadratic equation is called a...?

fomenos

Answer:

If you mean graphing its called a parabola

Step-by-step explanation:

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3 years ago

Evaluate f(3) for the piecewise function: f(x) = Which value represents f(3)? –11 8 12.5 16

Nonamiya [84]

Hello!

-3x-2=-3(3)-2=-9-2= -11
Therefore, The Correct Answer would be 100%:

"-11", Option "A".

I Hope my answer has come to your Help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead! :)

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4 years ago

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The data below are times (in seconds) recorded when statistics students participated in an experiment to test their ability to d

RoseWind [281]

Answer:

Mean = 58.25

Median = 57.5

Mode = 49

Step-by-step explanation:

We are given the following data set:

55, 51, 74, 61, 67, 60, 49, 49

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{466}{8} = 58.25$

Sorted data:

49, 49, 51, 55, 60, 61, 67, 74

Mode is the entry with highest frequency.

49 appeared two times.

Mode = 49

Formula:

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

$\text{Median} = \dfrac{55+60}{2} = 57.5$

All these are less than 60 seconds, which indicates that students perceive 1 minute to pass sooner than it actually has.

8 0

3 years ago

ABC ~ DEF<br> What is the value for x, the length of side BC?

Stella [2.4K]

Answer:

17.5

Step-by-step explanation:

as the triangles are similar, when oriented in the same direction they have the same angles, and the lengths of all sides of DEF are the lengths of the sides of ABC but multiplied by the same scaling factor f for all sides.

so, we see that

A ~ D

B ~ E

C ~ F

and therefore

AB ~ DE

BC ~ EF

CA ~ FD

that means

DE = AB × f

EF = BC × f

FD = CA × f

we know DE and AB.

so,

4 = 10 × f

f = 4/10 = 2/5

and now we know

EF = 7 = BC × f

BC = 7/f = (7/1) / (2/5) = (5×7)/(2×1) = 35/2 = 17.5

7 0

3 years ago

Plz help me get the answer ASAP

lakkis [162]

solve the inequality:

1/2c>-1

divide 1/2 from both sides

c>-2 is the answer

6 0

3 years ago

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