All categories

3 years ago

You travel 243 miles in 4.5 find the speed you travel.

Mathematics

2 answers:

vivado [14]3 years ago

7 0

Answer:

Step-by-step explanation:

Distance=243 miles

Time=4.5 sec

Speed= Distance/time

Speed=243/4.5

Speed=54 miles/hours

If you need to ask any questions, please let me know.

natima [27]3 years ago

3 0

Answer:

his is 234/4.5 and the units are miles/hr, which is a unit of speed

=52 mph

Step-by-step explanation:

You might be interested in

A rectangular plot of land has an area of 9/10 square mile. The length is 3/2 miles. What is the width?

jek_recluse [69]

Answer:

$\frac{3}{5}$

Step-by-step explanation:

The question is simple. All we have to do is divide $\frac{9}{10}$ by $\frac{3}{2}$ . The answer to that is $\frac{3}{5}$ .

8 0

3 years ago

Read 2 more answers

Saving...

vesna_86 [32]

Answer:

$m\angle y=35.69^o$

Step-by-step explanation:

The picture of the question in the attached figure

we know that

In the right triangle of the figure

$sin(y)=\frac{7}{12}$ ----> by SOH (opposite side divided by the hypotenuse)

using a calculator

$m\angle y=sin^{-1}(\frac{7}{12})=35.69^o$

8 0

3 years ago

Given the inequality of x < 5, select all the

diamong [38]

Nxnxnxbbxnxndnnsnsn nsnsnsndnnsndnndndnsndnndndnndnd

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=6%20%5Cdiv%20131.4" id="TexFormula1" title="6 \div 131.4" alt="6 \div 131.4" align="absmiddle"

Svetradugi [14.3K]

Answer: 21.9

131.4 divided by 6

4 0

3 years ago

DIscrete Math

Daniel [21]

Answer:

Step-by-step explanation:

As the statement is ‘‘if and only if’’ we need to prove two implications

$f : X \rightarrow Y$ is surjective implies there exists a function $h : Y \rightarrow X$ such that $f\circ h = 1_Y$ .
If there exists a function $h : Y \rightarrow X$ such that $f\circ h = 1_Y$ , then $f : X \rightarrow Y$ is surjective

Let us start by the first implication.

Our hypothesis is that the function $f : X \rightarrow Y$ is surjective. From this we know that for every $y\in Y$ there exist, at least, one $x\in X$ such that $y=f(x)$ .

Now, define the sets $X_y = \{x\in X: y=f(x)\}$ . Notice that the set $X_y$ is the pre-image of the element $y$ . Also, from the fact that $f$ is a function we deduce that $X_{y_1}\cap X_{y_2}=\emptyset$ , and because $f$ the sets $X_y$ are no empty.

From each set $X_y$ choose only one element $x_y$ , and notice that $f(x_y)=y$ .

So, we can define the function $h:Y\rightarrow X$ as $h(y)=x_y$ . It is no difficult to conclude that $f\circ h(y) = f(x_y)=y$ . With this we have that $f\circ h=1_Y$ , and the prove is complete.

Now, let us prove the second implication.

We have that there exists a function $h:Y\rightarrow X$ such that $f\circ h=1_Y$ .

Take an element $y\in Y$ , then $f\circ h(y)=y$ . Now, write $x=h(y)$ and notice that $x\in X$ . Also, with this we have that $f(x)=y$ .

So, for every element $y\in Y$ we have found that an element $x\in X$ (recall that $x=h(y)$ ) such that $y=f(x)$ , which is equivalent to the fact that $f$ is surjective. Therefore, the prove is complete.

3 0

3 years ago

You travel 243 miles in 4.5 find the speed you travel.​

You travel 243 miles in 4.5 find the speed you travel.