#10 HELP PLEASE THANKS!

Mathematics

1 answer:

Furkat [3]3 years ago

4 0

Answer:

I believe it's 3.

Step-by-step explanation:

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A train travels at a steady rate of 80 mph. If the train travels for one-half hour nonstop, what are the domain and range of the

alukav5142 [94]

The independent variable is time, which varies from 0 to 0.5, so domain = [0,0.5].
The distance travelled is the dependent variable, varying from 0 to (1/2)80=40 km. The range is therefore [0,40].

Note: in interval notation, a square bracket means that the value is included in the interval.

8 0

3 years ago

Angle A B D is a right angle, which is the measure of Angle C B D? Angle A B D is intersected by line C to form angles 75 degree

drek231 [11]

Answer:

15 degrees

Step-by-step explanation:

Since ABD is a right angle it equals 90 degrees

ABC is 75 degrees

ABC + CBD = ABD

75 + CDB = 90

Subtract 75 from each side

75-75 + CDB = 90-75

CDB = 15

The other angle is 15 degrees

6 0

4 years ago

Read 2 more answers

Which fraction is less than 1 chose all of the correct answer, and explain why you chose and write it down and explain your answ

EleoNora [17]

Answer:

$(3/4)$ and $(2/3)$ .

Step-by-step explanation:

For a fraction of the form $(p / q)$ , the number in front of the division ( $p$ ) is the numerator. The number after the division ( $q$ ) is the denominator.

$\begin{aligned} \frac{p}{q} \quad \genfrac{}{}{0}{}{(\text{numerator})}{(\text{denominator})}\end{aligned}$ .

A positive fraction $(p/q)$ ( $p,\, q > 0$ ) is less than $1$ as long as the numerator $p$ is smaller than the denominator $q$ (that is, $p < q$ .) The reason is that as long as $p,\, q > 0$ :

$\begin{aligned} & \frac{p}{q} < 1 \\ \iff & (q)\, \left(\frac{p}{q}\right) < (q)\, (1) && (\text{given that $q > 0$}) \\ \iff & p < q\end{aligned}$ .

For example, in the fraction $(2/3)$ , $2$ is the numerator while $3$ is the denominator. Both the numerator and the denominator are positive, while the numerator $2\!$ is smaller than the denominator $3\!$ . Therefore, $(2/3)$ would be less than $1$ .