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2 years ago

PLEASE HELP HELP HELP HELP

Mathematics

1 answer:

Masja [62]2 years ago

6 0

Answer: 12

Step-by-step explanation:

A polynomial is an expression that contains more than one number, letter, etc. so 12 is a monomial, because it only has one number. Hope this helps!!

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Please help ‼️‼️ i’ll give the brainliest thing if it’s correct

Rama09 [41]

This would be 85 use the percent in division

6 0

2 years ago

Find the dot product of u and v. u=(7,15) v = (-5,2)

nignag [31]

Answer:

A.... -5

Step-by-step explanation:

-35 + 30 = -5

5 0

3 years ago

A series of three? separate, adjacent tunnels is constructed through a mountain. Its length is approximately 25 kilometers. Each

Nadya [2.5K]

Answer:

$312.5\pi \text{ km}^3\approx 981.75\text{ km}^3$

Step-by-step explanation:

We have been given that a series of 3 separate, adjacent tunnels is constructed through a mountain. Its length is approximately 25 kilometers.

Each of the three tunnels is shaped like a half-cylinder with a radius of 5 meters.

Since we know that volume of a semicircular or a half cylinder is half the volume of a circular cylinder.

$\text{Volume of a semicircular cylinder}=\frac{\pi r^2h}{2}$ , where,

r = Radius of cylinder,

h = height of the cylinder.

Upon substituting our given values in volume formula we will get,

$\text{Volume of a semicircular cylinder}=\frac{\pi (5\text{ km})^2*25\text{ km}}{2}$

$\text{Volume of a semicircular cylinder}=\frac{\pi*25\text{ km}^2*25\text{ km}}{2}$

$\text{Volume of a semicircular cylinder}=\frac{\pi*625\text{ km}^3}{2}$

$\text{Volume of a semicircular cylinder}=\pi*312.5\text{ km}^3$

$\text{Volume of a semicircular cylinder}=981.74770\text{ km}^3$

Therefore, the volume of earth removed to build the three tunnels is $312.5\pi \text{ km}^3\approx 981.75\text{ km}^3$ .

4 0

3 years ago

I need help!!!!!! AGAIN!!!!!Find the perimeter of the trapezoid. (round to the nearest hundredth)

inysia [295]

(12 x 9) + (12 x 6/2). The answer would be 144 but rounded it would be 100

4 0

3 years ago

Read 2 more answers

Test 72,590 for divisibility by 2,5, or 10

nevsk [136]

Answer:

Divisible by 2, 5 AND 10.

Step-by-step explanation:

72590÷2=36295

72590÷5=14518

72590÷10=7259

5 0

3 years ago