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AnnyKZ [126]
3 years ago
10

Please Please please please help help help help!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Kitty [74]3 years ago
4 0
So you would write out the equation 3(30/25) x 4(12+15) and then do 30/25= 1.2 then do 1.2*3= 3.6 save that answer for later then do 12+15=27 then do 27*4= 108 then multiply together the 108* 3.6= 388.8
Studentka2010 [4]3 years ago
3 0

Answer:

Step-by-step explanation:

30  30 x 3 = 90

x 3

90  

first  multiply 4 x 5 = 20 bring down 0 then multiply 4 x 2 = 8 then add+2= 10

25 x 4 = 100

12 x 15 = 180

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Sam is buying a pair of water skis that are on sale for 2/3 of the original price. After he uses a $25 gift certificate the tota
Alexus [3.1K]

Answer:

$210

Step-by-step explanation:

The first thing we can do is to add the $25 back on to the total cost.

25 + 115 = 140.

We do this because he Sam used a gift certificate on the ski's that are already 2/3 of the original price.

Now, to find the original price we can use this equation:

\frac{2}{3} x = 140

X represents the original price.

To solve this equation you would flip 2/3 to 3/2 and multiply that by 140, as seen below:

(\frac{3}{2}) \frac{2}{3}x = 140 (\frac{3}{2})

Now you can solve:

x = \frac{420}{2} \\x = 210

We can check this answer by multiplying 210 by 2/3

(210)(2/3) = 140

Remember, Sam used a gift certificate for $25

140 - 25 = $115

Therefore, the original price of the skis is $210.

<em>I hope this helps!!</em>

<em>- Kay :)</em>

6 0
3 years ago
In the rectangular prism shown below, which lines are parallel?
olga_2 [115]

Answer:

JN and LP...............

8 0
3 years ago
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8/15 divided by 1/3 reduce your answer
klio [65]
Here we can use fact than we can multiply fraction by inverse of fraction instead of dividing it.
Inverse of 1/3 is 3/1
Lets multiply it
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Let no. of pens be x.

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Student takes 1 pen and 5 pencils.

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There are 12 pens at first and 20 pencils.
After 1 pen is taken, 11 pens are left.
After 5 pencils are taken, 20-5=15 pencils are left.
5 0
3 years ago
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