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DIA [1.3K]
3 years ago
6

THIS IS EASY BUT IM DUM SO I DONT GET IT

Mathematics
1 answer:
const2013 [10]3 years ago
5 0
Question: What is 35 percent of 40?

Percentage solution with steps:

Step 1: Our output value is 40.

Step 2: We represent the unknown value with $x$x​.

Step 3: From step 1 above,$40=100\%$40=100%​.

Step 4: Similarly, $x=35\%$x=35%​.

Step 5: This results in a pair of simple equations:

$40=100\%(1)$40=100%(1)​.

$x=35\%(2)$x=35%(2)​.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have

$\frac{40}{x}=\frac{100\%}{35\%}$
40
x​=
100%
35%​​

Step 7: Again, the reciprocal of both sides gives

$\frac{x}{40}=\frac{35}{100}$
x
40​=
35
100​​

$\Rightarrow x=14$⇒x=14​

Therefore, $35\%$35%​ of $40$40​ is $14$ B. 14%
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The sum of a students three scores is 217. If the first is 30 points more than the the second, and the sum of the first two is 1
nekit [7.7K]

Answer:

First score is 90

Step-by-step explanation:

Let A represent the first score

Let B represent the second score

Let C represent the third score

A+B+C=217 equation 1

If the first score A is 30 points more than the second,B

A=B-30  equation 2

Lastly,sum of A&B is 16 more than 2C

A+B=2C+16 equation 3

From equation 1

A+B=217-C equation 4

substitute for A+B in equation 3

217-C=2C+16

217-16=2C+C

201=3C

C=67

substituting C in equation 4

A+B=217-67

A+B=150

if the first score more than the first,then the first 90 while second 60 since A+B=150

3 0
3 years ago
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Can someone check my answer? i got 600.
lubasha [3.4K]

Answer:

Volume = 120 cubic cm

Step-by-step explanation:

We would apply the formula for determining the volume of a square bases pyramid which is expressed as

Volume = 1/3 x base area x height

From the diagram,

length of square base = 6 cm

The base area = 6^2 = 36

height = 10

Thus,

Volume = 1/3 x 3/6 x 10

Volume = 120 cubic cm

I hope this help you! :)

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Step-by-step explanation:

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Answer:

I think the answer is b

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