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asambeis [7]
3 years ago
13

Art 7

Mathematics
1 answer:
poizon [28]3 years ago
5 0

Answer:

C) 0.4 x (2a - 0.3b) = 0.8a - 0.12b

Step-by-step explanation:

0.4 x (2a - 0.3b)

= 0.4(2a) - 0.4(3b)

= 0.8a - 0.12b

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I need help with this
mojhsa [17]

Answer:

prop they're constant inchangeb

Step-by-step explanation:

7 0
2 years ago
grain is stored in cylindrical structures called silos which is the best estimate for the volume of a silo with a diameter of 12
zalisa [80]
Volume of a cylinder = base x height
the base is the area of the circle at the bottom. 

To find the area of a circle, you use:
A = πr²
where r is the radius of the circle. 
radius is half of the diameter, so with a diameter of 12.3, (divide that by 2) the radius of the circle is 6.15 feet. 

A = π(6.15)²
A ≈ 118.82 

Since we know the height is 25 feet, we can solve for the area of the cylinder. 

Area of the cylinder = 118.82 x 25 = 2,970.57 feet cubed
8 0
3 years ago
A water tank is filled to its capacity. It has a leak at the bottom through which water leaks at a constant rate. If y represent
Whitepunk [10]

Answer:

The answer is B.

Step-by-step explanation:

The tank initially had 1,200 gallons of water, which is leaking at the rate of 2.5 gallons per hour.

7 0
2 years ago
The length of an arc of a circle is 6.28 units, and the measure of the corresponding central angle is 1.12 radians. What is the
lorasvet [3.4K]
Hello,

arc=\theta \ * R\\\\
R= \frac{6.28}{1.12} =5,607142857...≈5.61
6 0
3 years ago
Read 2 more answers
Hey can you please help me posted picture of question
Alex Ar [27]
The resolvent is:
 x = (- b +/- root (b2 - 4ac)) / 2a
 To apply it we must have a polynomial of the form:
 ax2 + bx + c = 0
 Where,
 One side of the equation is zero.
 The polynomial must be only grade 2.
 The coefficient a must be different from zero.
 Answer:
 
options: B, C, D are correct
3 0
3 years ago
Read 2 more answers
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