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strojnjashka [21]
3 years ago
14

Please help!!! I don’t get any of this can someone please explain what to do and how I can get my answer????

Mathematics
1 answer:
diamong [38]3 years ago
7 0
Its just a matter of subbing ur numbers into the formula given
1. d = rt
    when r = 144 and t = 18
    now we sub
    d = 144 * 18
    d = 2592 <==
2. d = rt
    when r = 56 and t = 3.5
    sub
    d = 56 * 3.5
   d = 196 <==

3. A = L * W
    when L = 2 ft and W = 15 inches....this one u have to convert to     inches...2 ft = 24 inches...so L = 24 and W = 15
    A = 24 * 15
    A = 360 in^2 <==

4. A = L * W
    L = 3m and W = 32 cm...have to convert to cm.....1 m = 100 cm...so 3 m = 300 cm
    A = 300 * 32
    A = 9600 cm^2 <==

u basically do the same for all the others....its just a matter of subbing and solving
  
    
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4 years ago
Solve for y when x=28<br> x+3y=28
I am Lyosha [343]
Solving for y means to get that variable on one side of the equation and everything else needs to be on the opposite side of y.

We also know x is equal to 28. So, we can replace x with 28.
Now the equation will look something like 28 + 3y = 28

Now let us solve it.

28 + 3y = 28

First, subtract 28 from each side of the equation.

(28 + 3y) - 28 = 28 - 28 =
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Now divide each side by 3.

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4 years ago
The sales tax on a surfboard is 12$ .what is the percent of sales tax
sashaice [31]
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8 0
3 years ago
helpppppp nobody does this one either I don’t know whyyyyy
Lisa [10]

Answer:

-6±3i√2

Step-by-step explanation:

First we need to simplify the radical here which is √-288. We can make this i√288, and then further simplify by taking out 12 giving us 12i√2. Now we have

-24±12i√2/4

From here we just divide all the terms in the numerator by 4 and get -6±3i√2

6 0
3 years ago
Whats the slope and the equation
vichka [17]
You can find the slope of a line by having two points. In this case we have 5 different point so we pick two.

so for the first one I will pick (2,17) and (7,37)

we use (y2-y1) / (x2-x1)  this is rise over run

plug and chug to get slope.
(37-17)/(7-2)= 4 

now use point slope using one of the point that we used to find the slope
y−b=m(x−a<span>) or y-y1 = m (x-x1)

plug and chug again
m=4 ............ point (2,17)

y- 17 = 4 (x- 2)
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hope this helps
</span> 
4 0
3 years ago
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