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3 years ago

A survey of a random sample of ninth-grade students from Alabama asked whether the students owned a

Mathematics

1 answer:

DedPeter [7]3 years ago

6 0

Answer: A student who owns a cell phone is more likely to have brought a personal device than not to have brought one.

Step-by-step explanation:

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A number c decreased by 9 is less than or equal to 20 find c

kipiarov [429]

C-9<20

c=eleven or anything below

3 0

3 years ago

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

29/5 divided by nine and a half

trapecia [35]

29/5 is 5.8 5.8 dividen by 9 1/2 is 0.61052631578

Hope this helps! Have a great day!!!

3 0

3 years ago

A pair of jeans that originally costs $42 is 25% off.Find the sale price.ASAP PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Anon25 [30]

Original Price = $42
Discount = 25% ---------> 25% is discount because it says 25% <span><u />off!!!</span>
Now,
Sale price = original price - discount % of original price
= 42 - 25% of 42
= 42 - (25/100) * 42
= 42 - 0.25 * 42
= 42 - 10.5
= 31.5

So, the sale price is $31.5

6 0

4 years ago

(03.01 LC)<br><br> What is the length of leg y of the right triangle? (1 point)

EastWind [94]

Answer:

Step-by-step explanation:

The complete question is

What is the length of leg y of the right triangle?

A right triangle with hypotenuse 26 and legs 24 and y

We need to use the Pythagorean Theorem, where $h=26$ and $x=24$ ,