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-BARSIC- [3]
4 years ago
12

Evaluate. 1 – 3 • 7 4 • 2 A. –28 B. –12 C. –32 D. –20

Mathematics
1 answer:
kogti [31]4 years ago
7 0
Okay did you ever her of p.e.m.d.a.s it help so much but if you use that for the question you should get A but i can tell if you had to add between 3•7 and 4•2 if you do answer would be A
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10.5 is more than 10.005
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If you want to Convert Yards to Feet what operation would you use
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Well, there are 3 feet in a yard so you can just divide the number of yards by 3.
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Read 2 more answers
Can someone help me with number 19 please?
andreyandreev [35.5K]

I think I can.
Let's do it together:

Let's call the number of buses 'B', and the number of vans 'V'.
(Pretty clever so far, don't you think ?)

OK. What do we know ?

-- Each bus holds 51 passengers.  The number of passengers in 'B' buses is 51B.

-- A van holds 10 passengers.  The number of passengers in 'V' vans is 10V.

-- The total number of passengers ... (51B + 10V) ... is 142.

-- The total number of vehicles ... (B + V) ... is 6, because there are 6 drivers.

Can you make a system of equations out of that information yet ?
How about this:

     51B + 10V = 142
         B  +    V =     6

I really think you can handle it from here.
=======================================

Multiply the 2nd equation by 10 :

     51B + 10V = 142
     10B + 10V =   60

Subtract the 2nd equation from the 1st one:

       41B        =  82

Divide each side by 41:  <em>  B = 2 buses</em>

2 buses . . . . 2 drivers . . . . 2 x 51 = 102 passengers

4 vans . . . . . 4 drivers . . . . . 4 x 10 =  40 passengers

6 vehicles . . . 6 drivers . . . . . 102 + 40 = 142 passengers


7 0
3 years ago
The state sales tax on clothing is 5.5%. What is the cost of a $25 shirt,
kodGreya [7K]
26.38

5.5%=.055

.055x25=1.375(1.38)

25+1.38=26.38
6 0
3 years ago
The price of a digital camera sold in stores is $129. It is sold on eBay for $65. What is the percent decrease from the store's
SpyIntel [72]
Percent decrease=100*decrease/original

decrease=original-saleprice
decrease=129-65
decrease=64

percent decrease=100*64/129
percent decrease=100*0.496124
percent decrase=49.6124
about 50% decrase
8 0
3 years ago
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