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3 years ago

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There are 1500 pupils in a school. 23% of the pupils in the school are Malays. 68% of the pupils are Chinese. The rest of the pu

pils are indians. how many more Chinese pupils than Malay pupils are there?

1 answer:

sasho [114]3 years ago

5 0

Answer:

there is 77% more chinese students.

Step-by-step explanation:

subtract the 23% of malay students from the 100% of the students in the school.

100-23=77

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in PQR the obtuse angle is 105 and the shorter sides measure 4 and 7 units Rounded to the nearest tenth what is the area of tria

cricket20 [7]

Answer:

the answer is 13.5

Step-by-step explanation:

A=105

B=4

C=7

so you just plug in using the trigonometric formula for area which in this case would be

1/2(4)(7)sin(105)

then you just type that into a graphing calculator (make sure its set to degrees) then you get 13.52 which would be 13.5 rounded.

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inna [77]

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Step-by-step explanation:

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2 years ago

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What is the maximum height of of Anna's golf ball? The equation is y=x−0.04x2.

elena-s [515]

Given:

The height of a golf ball is represented by the equation:

$y=x-0.04x^2$

To find:

The maximum height of of Anna's golf ball.

Solution:

We have,

$y=x-0.04x^2$

Differentiate with respect to x.

$y'=1-0.04(2x)$

$y'=1-0.08x$

For critical values, $y'=0$ .

$1-0.08x=0$

$-0.08x=-1$

$x=\dfrac{-1}{-0.08}$

$x=12.5$

Differentiate y' with respect to x.

$y''=(0)-0.08(1)$

$y''=-0.08$

Since double derivative is negative, the function is maximum at $x=12.5$ .

Substitute $x=12.5$ in the given equation to get the maximum height.

$y=(12.5)-0.04(12.5)^2$

$y=12.5-0.04(156.25)$

$y=12.5-6.25$

$y=6.25$

Therefore, the maximum height of of Anna's golf ball is 6.25 units.

7 0

3 years ago

Which steps would you use to solve this equation? Check all that apply.

Dovator [93]

Answer: The answers are

Subtract 7 from both sides of the equation.
Subtract 7 from 7.
Substitute 5 for p to check the solution.

Step-by-step explanation:

p + 7 = 12

= p + 7 - 7 = 12 - 7

= p = 5

Then for the substituting part

5 + 7 = 12

Hope this helps!

3 0

3 years ago