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3 years ago

Mr. Yueng graded his students’ math quizzes.

Mathematics

2 answers:

Artyom0805 [142]3 years ago

3 0

For this case we must solve the following equation:

$x ^ 3 = 22$

If we apply cubic root to both sides of the equation, then we eliminate the exponent on the left side:

$\sqrt [3] {x ^ 3} = \sqrt [3] {22}\\x = \sqrt [3] {22}$

That is the exact solution of the equation. Its decimal solution is given by:

$x = \sqrt [3] {22} = 2.8020$

ANswer:

The solution to the equation is $x = \sqrt [3] {22} = 2.8020$

prohojiy [21]3 years ago

3 0

Answer:

Step-by-step explanation:

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If there are 23 members of NCT 2020 how many ships (pairings) can be made? I actually know how to do this, I'm just too lazy.

quester [9]

Answer:

11 pairs

Step-by-step explanation:

You can fit 11 pairs of 2 into 23 with 1 left over

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3 years ago

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An elevator can hold a maximum of 1500 pounds. An average child weighs 75 pounds and the average adult weighs 150 pounds. The el

CaHeK987 [17]

Let's take this problem step-by-step:

Let's first set up some variables:

c: # of children
a: # of adults

Let's examine the information given:

Elevator can hold a maximum of 1500 pounds

⇒ average child is 75 pounds

⇒ average adult is 150 pounds

⇒ therefore: $75c + 150a\leq 1500$

Elevator can fit no more than 14 people

⇒ therefore: $c + a \leq 14$

Let's graph the equations:

$75c+150a\leq 1500\\c+a\leq 14$

⇒ look at the image attached

The point at which the two graphs intersect:

⇒ is the solution that represents the amount of children and adults and

their combine weight

With the horizontal axis being the # of children and vertical axis being the # of adults:

⇒ the solution is 8 children and 6 adults

Answer: 8 children and 6 adults

Hope that helped!

7 0

2 years ago

Simplify I don’t get this subject

kondaur [170]

The correct answer it’s 3

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3 years ago

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A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th

Naddika [18.5K]

Answer:

The rocket will hit the ground after about 8.20 seconds.

Step-by-step explanation:

The height of the rocket y, in feet, x seconds after launch is modeled by the equation:

$y=-16x^2+121x+83$

We want to find the time at which the rocket will hit the ground.

If it hits the ground, the height of the rocket y will be 0. Thus:

$0=-16x^2+121x+83$

We can solve for x. Factoring (if possible at all) or completing the square can be tedious, so we can use the quadratic formula:

$\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

In this case, a = -16, b = 121, and c = 83. Substitute:

$\displaystyle x=\frac{-(121)\pm\sqrt{(121)^2-4(-16)(83)}}{2(-16)}$

Simplify:

$\displaystyle x=\frac{-121\pm\sqrt{19953}}{-32}$

Divide everything by -1 and simplify the square root. The plus/minus will remain unchanged:

$\displaystyle x=\frac{121\pm3\sqrt{2217}}{32}$

Therefore, our two solutions are:

$\displaystyle x=\frac{121+3\sqrt{2217}}{32}\approx 8.20\text{ or } x=\frac{121-3\sqrt{2217}}{32}\approx -0.63$

Since time cannot be negative, we can ignore the second solution.

Therefore, the rocket will hit the ground after about 8.20 seconds.

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3 years ago

Whats the worlds biggest number ?

Marizza181 [45]

The biggest named number that we know is googolplex, ten to the googol power, or (10)^(10^100). That's written as a one followed by googol zeroes.

Have a Merry Christmas!

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3 years ago