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3 years ago

HELP ASAP ILL GIVE BRAINLIST

Mathematics

1 answer:

Lelu [443]3 years ago

4 0

Answer:

16/25 or 64%

Step-by-step explanation:

In this problem we see that 64 out of the 100 students did better on the exams. So, to find the answer we must find the percentage form of 64 out of 100.

Step one:

what exactly is 64 out of 100? Well, in the math world when we see 'out of' we know that means 'divided by'. So, 64 out of 100 is 64/100.

Step two:

now we have to turn 64/100 into a percentage. We know that 1/100 is 1% so lets multiply 1 by 64. 64*1 = 64. This means that 64/100 = 64%.

I'm not 100% sure what form you need your answer in but if you need it in percentage for the answer is 64%. If you need your answer in a fraction form the answer would be 64/100 or 16/25 if we simplify the answer.

I hope this helps!!

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4x2 + y2 = 36 Obtener dominio

Veronika [31]

Answer:

[-3,3]

Step-by-step explanation:

Write the problem as a mathematical expression.

4x^2+y^2=36

Subtract 4x^2 from both sides of the equation.

y^2=36-4x^2

Take the square root of both sides of the equation to eliminate the exponent on the left side.

y= + and - $\sqrt{36-4x^2}$

The complete solution is the result of both the positive and negative portions of the solution.

y= $2\sqrt{(3+x)(3-x)$

$y= -2\sqrt{(3+x)(3-x)}$

Set the radicand in $\sqrt{(3+x)(3-x)} \geq 0$ greater than or equal to 0 to find where the expression is defined.

$(3+x)(3-x)\geq 0$

So your answer would be [-3,3]

3 0

3 years ago

Bily is helping to make piZzas for a school function. He's made 25 pizzas so far His principal asked him to make at least 30 piz

GrogVix [38]

The answer is Option B

We know that this inequality doesn't require any negative number division, there's no need to switch the ≤'s into ≥'s.

So now, all we have to do is subtract 25 from every number, giving us 5≤x≤50

3 0

3 years ago

Read 2 more answers

I NEED HELP ASAP PLEASEEEE!!!!! Given the cube, what is the total surface area and volume?

Alex

Answer:

864

Step-by-step explanation:

144x6

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3 years ago

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No links, find the length of X in inches

krek1111 [17]

Answer:

107 inches

Step-by-step explanation:

28+45+x=180

x=180-28+45

x=180-73

x=107

7 0

3 years ago

A strobe light is located at the center of a square dance room. the rotating light is 40 feet from each of the square walls and

Effectus [21]

The equation of the rotating light is an illustration of a secant function

The equation that represents the distance between the center of the circle and the light source is $d(t) = 40\sec(\frac{\pi}{3}t)$

<h3>How to determine the equation</h3>

The equation is a secant function represented by

$y =A\sec(Bt)$

Where:

A represents the amplitude

So, we have:

$A = 40$ --- the distance of the light from each square wall

B represents the period, and it is calculated as:

$B = \frac{2\pi}{T}$

The light completes its full rotation every 6 seconds.

This means that,

T = 6

So, we have:

$B = \frac{2\pi}{6}$

Simplify

$B = \frac{\pi}{3}$

Substitute values for A and B in $y =A\sec(Bt)$

$y = 40\sec(\frac{\pi}{3}t)$

Rewrite as a function

$d(t) = 40\sec(\frac{\pi}{3}t)$

Hence, the equation that represents the distance between the center of the circle and the light source is $d(t) = 40\sec(\frac{\pi}{3}t)$

Read more about trigonometry functions at:

brainly.com/question/1143565

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2 years ago