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Solnce55 [7]
3 years ago
7

Which equation could you use to solve for x in the proportion 4/5=9/x​

Mathematics
1 answer:
Maru [420]3 years ago
5 0
Cross and multiply which should get you 4x=45 then divid 4 to each side and the answer should be x=11.25
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Alexander and Jo live 5 miles apart. They decide to leave their homes at 3 p.M. And travel toward each other. If Alexander bikes
lukranit [14]

Answer:

Step-by-step explanation:

Here is an illustration of the problem:

             ----------------------------->|<------------------

            A                                  t                     J

Alex and Jo start from their separate homes and drive towards one another.  The t indicates the time at which they meet, which is the same time for both.  Filling in a d = rt table:

              d           =        r        x        t

Alex                              14                t

Jo                                   6                t

The formula for motion is d = rt, so that means that Alex's distance is 14t and Jo's distance is 6t.

             

                      14t                               6t

   ---------------------------------->|<------------------

   A                                       t                      J

The distance between them is 5 miles, so that means that Alex's distance plus Jo's distance equals 5 miles.  In equation form:

14t + 6t = 5 and

20t = 5 so

t = .25 hours or 15 minutes.

If they leave their homes at 3 and they meet 15 minutes later, then they meet at 3:15.

3 0
3 years ago
The perimeter p of a rectangle is given by the formula p=2L+2w, where L is the length of the rectangle and w is the width. Which
Ilya [14]
D) p/2 - l

because, p= 2(l+w)
P/2=l+w
w=p/2-L
7 0
3 years ago
A carpenter charges $720 for 18 hours of work. She charges the same amount of money for each hour of work.
Rainbow [258]

Answer:

A

Step-by-step explanation:

To start off, you know 18 hours= 720

So you could automatically get rid of B and D since 19 and 17 are not 18.

After that, you have it down to A and C. The way you would find how much she charges for one hour is dividing 720 by 18. When you do that it means you are divding 720$ into 18 different groups each group representing an hour. When you divide 720 by 18 you should get 40. So every hour she makes 40 dollars. 40x 2 hours is 80. I hope I helped you!

3 0
2 years ago
Read 2 more answers
Two variables are correlated with r = -0.23. Which description best describes the strength and direction of the association betw
tatuchka [14]
Answer is C weak negavite


weak, because as the value became smaller that 1 the correlation weakens. negavite because it is a negative value (-0.23)
3 0
3 years ago
This box can be packed with 48 unit cubes
AURORKA [14]

Answer:

Please clarify the question so I can answer :)

Step-by-step explanation:

8 0
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