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3 years ago

Need help ASAP i am timed

Mathematics

1 answer:

Nadya [2.5K]3 years ago

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Just search it up on a math website or sum

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A box has dimensions of 70 inches 101. Feet wide and 8 inches high what is the volume of the box ?

butalik [34]

70 inches (length)
101 feet (wide)
8 inches (high)

101×12= 1,212
*to convert the 101 feet to inches

70×1,212×8= 678,720 inches³

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4 years ago

I WILL GIVE BRAINLIEST

Doss [256]

Answer:

I gotchu

Step-by-step explanation:

Download pdf

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3 years ago

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A club has 25 members. How many ways are there to choose four members of the club to serve on the executive committee? How many

Contact [7]

Answer:

303600 ways

Step-by-step explanation:

No. of members = 25

We are supposed to find the no. of ways to choose a president, vice-president, secretary, and treasurer of the club

No. of posts = 4

The order matters here since each member will get different posts .

So, we will use permutation over here

Formula: $^nP_r=\frac{n!}{(n-r)!}$

n = 25

r = 4

$^{25}P_4=\frac{25!}{(25-4)!}$

$^{25}P_4=303600$

Hence there are 303600 ways to choose a president, vice-president, secretary, and treasurer of the club

4 0

3 years ago

If a polygon has 1127 diagonals, how many sides does the polygon have? (what’s the equation to solve or & answer)

Vlada [557]

We are given : Number of diagonals of a polygon = 1127 diagonals.

We know relation between number of diagonals and number of sides of the polygon.

<h3> $\frac{n(n-3)}{2}=d$ , Where n is the number of sides of the polygon and d is number of diagonals.</h3>

Plugging d=1127 in above formula, we get

$\frac{n(n-3)}{2}=1127$

Multiplying both sides by 2, we get

$n(n-3)=2254$

$n^2-3n=2254$

$n^2-3n-2254=0$

Solving quadratic equation by factoring, we get factors

$\left(n-49\right)\left(n+46\right)=0$

Solving for n, we get

n-49=0

n=49.

n+46=0.

n=-46.

We can't take number of sides by a negative number.

Therefore, number of sides does the polygon have 49 side.

3 0

3 years ago

3. A farmer has a 150 feet of fencing and wants to construct 3 pig pens by first building a fence around a rectangular region, t

leonid [27]

Answer:

$l = 37.5\,ft$ and $w = 18.75\,ft$

Step-by-step explanation:

The total perimeter and area of the pig pens are, respectively:

$4\cdot w + 2\cdot l = 150\,ft$

$A = w\cdot l$

In order to know the maximum area, the second function shall be simplified, derived and equalized to zero. The solution leads to a critical point, whose characteristics can be deduced by using the second derivative of the area:

$w = 37.5\,ft - 0.5\cdot l$

$A = (37.5\,ft-0.5\cdot l)\cdot l$

$A = 37.5\cdot l - 0.5\cdot l^{2}$

$A' = 37.5 - l$

$37.5 - l = 0$

$l = 37.5\,ft$

$A'' = -1$ (absolute maximum)

$w = 37.5\,ft - 0.5\cdot (37.5\,ft)$

$w = 18.75\,ft$

The dimensions of the region that maximizes the total area are:

$l = 37.5\,ft$ and $w = 18.75\,ft$

7 0

3 years ago

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