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3 years ago

Find the surface area please!

Mathematics

1 answer:

IrinaK [193]3 years ago

3 0

Answer:

Step-by-step explanation:

First we can write the equation to find the surface area of a rectangular prism $A = 2(w*l+h*l+h*w)$

Now rewrite filling in variables

$A = 2(3*5+8*5+8*3)$

Solve. Keep in mind the order of operations

After solving, you should get 158.

Since these measurements were done in inches, we need to add inches/in to the end.

Also, since it is area, we need to add ²

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Consider the quadratic equation x2 = 4x - 5. How many solutions does the equation have?

JulijaS [17]

Answer:

no real solutions
2 complex solutions

Step-by-step explanation:

The equation can be rearranged to vertex form:

x^2 -4x = -5 . . . . . . . . . subtract 4x

x^2 -4x +4 = -5 +4 . . . . add 4

(x -2)^2 = -1 . . . . . . . . . show the left side as a square

x -2 = ±√-1 = ±i . . . . . . take the square root; the right side is imaginary

x = 2 ± i . . . . . . . . . . . . . add 2. These are the complex solutions.

_____

<em>Comment on the question</em>

Every 2nd degree polynomial equation has two solutions. They may be real, complex, or (real and) identical. That is, there may be 0, 1, or 2 real solutions. This equation has 0 real solutions, because they are both complex.

3 0

3 years ago

A company sells bath oils contained in spherical, water-soluble pods. The circumference of each spherical pod is 37.68 millimete

77julia77 [94]

Hello!

First of all, to find the volume we will want to find the radius. First let's divide our circumference by pi.

37.68/3.14=12

We find half of this for the radius.

12/2=6

Now we use the formula V= $\frac{4}{3} \pi r^{3}$ . We will solve below.

V= $\frac{4}{3} \pi (6^{3} )$

V= $\frac{4}{3} \pi(216)$

V $\approx \boxed {904.32}$

Therefore, our answer is about 904.32 ml³.

I hope this helps!

6 0

3 years ago

PLEASE HURRY!!!!!

Brums [2.3K]

Answer:

Step-by-step explanation: i am doing same thing you are doing rn

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3 years ago

The following equation: C=43x+14100gives the total cost, in dollars, to produce x units of a product at a factory. If the monthl

Masja [62]

We have

C is the cost

x is the units of a product at the factory

C= 35170

we need to find the value of x

The equation given is

$C=43x+14100$

so we have the value of C, so the equation if we substitute the value of C is

$35170=43x+14100$

we need to isolate the x

$\begin{gathered} 35170-14100=43x \\ 21070=43x \\ x=\frac{21070}{43} \\ x=490 \end{gathered}$

In that month,490 units can be produced for $35170.

6 0

1 year ago

Phytagoras therom solving method

Anna [14]

Answer:

${hyp}^{2} = {adj}^{2} + {opp}^{2}$

this is the formula u can use it on any Pythagoras theorm problem

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3 years ago