GEOMETRY. PLS HELP ASAP....
How can you verify Euler’s formula for this net of a cube?

Answers

Answer 1

Answer: The above figure can be formed into a cube.

This is for any polyhedron that does not intersect itself. The Euler's formula states that the number of faces plus the number of vertices or corner points less the number of edges is always equal to 2.

Faces + Vertices - Edges = 2

A cube has 6 faces, 8 vertices, and 12 edges.

Euler's formula: 6 + 8 - 12 = 2 ⇒ 14 - 12 = 2 ⇒ 2 = 2

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I don't know how to do this

Answers

part a : a coefficient is 10.5

a variable is c

a constant is 50

part b : $618.50

part c : the coefficient would change because instead of it being 10.5 in front of the variable "h" it is now 11.25 in front of the variable.

Part A. h and c are variables 10.15 and 15 are coefficients 50 is the constant
Part B.Put h=37 and c=12
Part C.$11.25 instead of 10.15 i.e. eq. becomes 11.25h + 15c + 50

-4.75 = x/2 what is x

Answers

Answer:

x= -9.5

Step-by-step explanation:

We want to find out what the variable, x, is equal to. Therefore, we must isolate the variable on one side of the equation.

-4.75 = x/2

x is being divided by 2. The inverse of division is multiplication. Multiply both sides of the equation by 2.

2*(-4.75) = (x/2)*2

2*(-4.75)=x

2* -4.75=x

Multiply 2 and -4.75

-9.5=x

Let's check our solution. Plug -9.5 back in for x and solve.

-4.75= x/2

-4.75= -9.5/2

-4.75= -4.75

This checks out, so we know our solution is correct.

x is equal to -9.5

Answer:

$x = (19)/(2)$

Step-by-step explanation:

$(x)/(2) = - 4.75$

First convert the decimal to an improper fraction

That's

$- 4.75 = - (19)/(4)$

So we have

$(x)/(2) = - (19)/(4)$

Cross multiply

4x = - 38

Divide both sides by 4

We have the final answer as

$x = (19)/(2)$

Hope this helps you

If (x + 3)2 = 42, what is the approximate positive value of x? 0.48
3.48
5.48
6.48

Answers

(x+3)^2 =42
x+3 = 6.48
x= 3.48

I just took this exam and the correct answer is 3.48. Good luck!

32 is 40 percent of what number

Answers

Yay percentages, okay.

You have 40/100 = 32/x
What you can do is cross multiply

40 32
--- ---
100 x

Multiply 32 by 100 and divide by 40, you should get your answer. (Namely 80)

40% * x =32

$(40)/(100) *x=32 \n \n 40x=3200 \n \n x=80$

If you invest $2,000 today in a bank that gives you a 4 percent annual interest rate, which of these items can you buy in seven years?

Answers

Just the Mountain bike, cause 4% of $2000 is, $80. and $80 for each year for 7 years make $560. now after 7 years your bank account has $2560. Therefore, you can buy a mountain bike, and have $60 left over, if there is no tax included. But if there is tax, your going to be still short by $115.(calculated according to florida's tax, that is 7%.) Anyways if the tax is over 2% you cant get that bike.

All of them

put this in a calculator: 2000*20%*7 then take away the prices or bills and thats how much money is left after the shopping spree

Factor completely 16x2 + 40x + 25.(4x − 5)(4x − 5)

(2x − 5)(2x − 5)

(2x + 5)(2x + 5)

(4x + 5)(4x + 5)