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3 years ago

5

Mathematics

1 answer:

noname [10]3 years ago

5 0

Answer:

Step-by-step explanation:

Here, we want to know the total amount of money shared

Total ratio is 2 + 4 + 9 = 15

Now, John and Peter with ratios 2 and 4 equals $360

If we combine their ratios, what we have would be

6:9

Let the amount shared be x

Now, mathematically

6/15 * x = 360

6x = 15 * 360

x = (15 * 360)/6

x = $900

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Simplify _4x+2y+z_3x+2y_2z

Helen [10]

Answer:

maybe 3xz + 4yz + 4x + 2y

Step-by-step explanation:

I tried my best!

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3 years ago

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:

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

Choose the number that correctly completes the equation: blank divided by 6 = 0.2 what number do you think blank is?

ANEK [815]

Answer:

Step-by-step explanation:

Try them all out.

0.12/6=0.02

0.03/6=0.005

0.3/6=0.05

1.2/6=0.2

D is the answer.

4 0

3 years ago

My new cell phone cost me $190.00 but when I signed a 2 year plan, I got

Gala2k [10]

Answer:

$304.00

Step-by-step explanation:

20% of $190.00 is 38

$190.00 - 38 = $152.00

$152.00 + $152.00 = $304.00 or $152.00 x 2 = $304.00

5 0

3 years ago

PLEASE HELP ME!!!!!!!!

Inessa [10]

The surface area is 358.2 inches ^2

Hope this helps :)

8 0

3 years ago