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ANEK [815]
3 years ago
15

W/7 + 12 ≥ 21 hshshgwq​

Mathematics
1 answer:
Mice21 [21]3 years ago
7 0

Answer:

Hi, this question is a little unclear. If I am solving for w in the first part, then we can multiply both sides by 7 and get:

w + 12 <u>></u> 147

minus 12 from both sides

w <u>></u> 135

I'm not sure what the "hshshgwq" means..

But i hope this helps!

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A diesel train traveled to the repair yards and
jek_recluse [69]

Answer:

B.  16 hrs

Step-by-step explanation:

Distance = rate × time

The best way to do this is to make a table with the info.  We are concerned with the trip There and the Return trip.  Set it up accordingly:

                    d     =     r     ×     t

There    

Return

The train made a trip from A to B and then back to A again, so the distances are both the same.  We don't know what the distance is, but it doesn't matter.  Just go with it for now.  It'll be important later.

               d     =     r     ×     t

There      d    

Return     d

We are also told the rates.  There is 70 km/hr and return is 80 km/hr

               d     =     r     ×     t

There      d     =    70

Return     d     =    80

All that's left is the time column now.  We don't know how long it took to get there or back, but if it took 2 hours longer to get There than on the Return, the Return trip took t and the There trip took t + 2:

                      d     =     r     ×     t

There             d     =    70   ×    t+2

Return            d     =    80   ×     t

The distances, remember, are the same for both trips, so that means that by the transitive property of equality, their equations can be set equal to each other:

70(t + 2) = 80t

70t + 140 = 80t

140 = 10t

14 = t

That t represents the Return trip's time.  Add 2 hours to it since the There trip's time is t+2.  So 14 + 2 = 16.  

B.  16 hours

8 0
3 years ago
Divide 250 in the ratio of 1 : 4
Aleksandr [31]
1 + 4 = 5 (5 parts) 
<span>£250/5 = 50 </span>
<span>1 x £50 = 50 </span>
<span>4 x £50 = 200 </span>
<span>so the answer is 50:200 </span>
6 0
3 years ago
Read 2 more answers
2. The length of a rectangular garden is
Kipish [7]
72 + 72 + 144 + 144 premier is 432 and area is 10368
7 0
2 years ago
Can someone help me with this its for biology but it’s a math question.
alexdok [17]

Answer:

Hey there!

A pie graph is best used for looking at the percentages in each category.

Let me know if this helps :)

6 0
3 years ago
Read 2 more answers
The first step in constructing this equilateral triangle is to draw segment ab. what is the second step?
GaryK [48]

Option C:

The second step is draw two circles with radius AB.

Solution:

Given data:

Triangle ABC is an equilateral triangle.

<em>In equilateral triangle, all the sides are equal.</em>

AB = AC = BC

The two circles are overlapping each other.

Each circle touches the center of the other circle.

This means the radius of two circles are equal.

<em>The distance from center to boundary of the circle is radius.</em>

So that AB is the radius of both circles.

Hence the second step is draw two circles with radius AB.

Option C is the correct answer.

8 0
3 years ago
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