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viktelen [127]
3 years ago
9

I will have your children if you can do this problem for me.

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0
1. b
2. d
3. e
4. c
5. a
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A concrete column has a diameter of 390 mm and a length of 3 m. If the density (mass/volume) of concrete is 2.45 Mg/m^3, determi
Serhud [2]

Answer:

<h2>w= 0.83 N</h2>

Step-by-step explanation:

The column has the shape of a cylinder hence the formula for the volume of a cylinder is

v=\pi r^2h

Given

diameter d= 390 mm

radius r= 390/2= 195 mm to meter = 0.195 m

length or height h= 3 m

applying the data to the formula we have

v=\pi *0.195^2*3\\\\ v=\pi*0.0038*3\\\\ v=\pi*0.0114\\\\ v=0.035 m^3

we can now use the volume in addition with the density given to solve for the mass using the expression for density

density= mass/volume

2.45= mass/0.035

mass= 2.45*0.035

mass= 0.085 mg

We know that weight

w= mass* acceleration

w= 0.085*9.81

w= 0.83 N

3 0
4 years ago
F(x) = 5x - 2 g(x) = 2x^2−x What is f^−1(x)?
Arlecino [84]

Answer:

Set up the composite result function.

g(f (x))

Evaluate:

g (f (x))

by substituting in the value of f into g .

g (5x −2) = 2 (5x −2)+

Simplify each term.

Apply the distibutive property: (A b + c) = ab + ac)

g(5x−2)= 10x−4+1

Add − 4  and 1.

so, g(5x−2)=10x −3

<h2>please brailiest! </h2>

4 0
3 years ago
Sneakychicken help me ​
12345 [234]

Answer:

x, process, y

-2, -2-1, -3

-1, -1-1, -2

0, 0-1, -1

1, 1-1, 0

2, 2-1, 1

X = -2, -1, 0, 1, 2

Y = -3, -2, -1, 0, 1

Step-by-step explanation:

Coordinates for the graph are ( -2,-3), (-1,-2), (0,-1), (1,0), (2,1)

The graph is the image attached to this.

How to get Y:

-2-1= -3

-1-1= -2

0-1= -1

1-1= 0

2-1= 1

Hope this helps.

5 0
3 years ago
Students are selling tickets to a school fundraiser. For every 15 tickets a student sells, a student earns a t shirt as a reward
Nana76 [90]

Answer:

The independent would be the 15 tickets and the dependent would be the t-shirt

Step-by-step explanation:

5 0
3 years ago
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How many solutions does the equation 3(x+7)=20+3x+1 have?
Gala2k [10]
C. Infinitely many of solutions
5 0
3 years ago
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