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quester [9]
2 years ago
12

in an exam 90% students passed if the 15 student fail find the number of students appeared in the examination​

Mathematics
2 answers:
Flura [38]2 years ago
7 0

Step-by-step explanation:

90%passed

100%-90%=10% failed

10%=15 students

100%=x students

  • USE CROSS METHOD

10x=1500

x=1500/10

x=150 number of students appeared in the exam.

Oliga [24]2 years ago
6 0

Answer:

150

Step-by-step explanation:

15 fail

90 percent pass

15=10 percent

135=90 percent

150

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Some number minus 3 is equal to the product of the number and 12
nikklg [1K]

Answer:

x-3=x+12

Step-by-step explanation:

because some number is x minus 3 would be x-3 is equal to so put an equal sign the product of the number x and 12

8 0
3 years ago
Find the slope of the line (12,-18), (11,12)
telo118 [61]

Answer:

-30

Step-by-step explanation:

To find slope, subtract two y's and then subtract the x's in the same order.

<u>12-(-18)</u>=<u>30</u>=-30

11-12       -1

You could also switch the order like this...

<u>-18-12</u>=<u>-30</u>=-30

12-11      1

As you can see, both of the ways of solving for slope resulted in -30.

Hope this helps!! Have a great day :3

4 0
3 years ago
Mark owes his sister $15. He earned $24 for mowing the grass. He gave 1/6 of his earnings to a local charity and then paid his s
Effectus [21]

Answer:

$5

Step-by-step explanation:

(5/6)*24=20

20-15=5

8 0
3 years ago
Simplify (3x^5)^2 please !!
kolbaska11 [484]

Answer:

9x^{10}

Step-by-step explanation:

(x^a)^b=x^{ab}

so

(3x^5)^2=9x^{10}

4 0
3 years ago
Review the federal income tax table.
SSSSS [86.1K]

9514 1404 393

Answer:

  $16,974.50

Step-by-step explanation:

$14,382.50+24% of the amount over $84,200 is ...

  $14,382.50 +0.24×(95,000 -84,200) = $14,382.50 +2592.00 = $16,974.50

Mustafa owes $16974.50 in federal income tax.

_____

<em>Additional comment</em>

Each row of the tax table can be simplified by multiplying out the expression it describes. For the row applicable to this problem, that becomes ...

  14382.50 +0.24(amount -84200) = 14382.50 +0.24×amount -20208

  = 024×amount -5825.50

4 0
3 years ago
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