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3 years ago

How many significant figures does 2,090 have? 1 2 3 4

Mathematics

2 answers:

prisoha [69]3 years ago

7 0

3 significant figures.

Hope I helped! ( Smiles )

sineoko [7]3 years ago

7 0

Answer:

The significant number of 2,090 is 3

C is correct

Step-by-step explanation:

We have a number 2,090

We need to count significant number from 2,090

Rule to find significant number:

1) zero before decimal not count (0.0205) significant figure = 3

2) last zero not count for number (2050 ) significant figure = 3

For given number:

2,090 : Significant number is 3 ( we will not count zero after 9 )

Hence, The significant number of 2,090 is 3

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(3.0*10^6)(2.5*10^5) equals what

alekssr [168]

The answer is 750000000000

7 0

3 years ago

Read 2 more answers

Evelyn's made a cake in the shape of a circus tent the cake consisted of a cylinder and a cone .The height of the cone is half t

Lera25 [3.4K]

The volume of the cake is 1470 in³.
volume of a cylinder = πr² x height
(Think about how a cylinder is basically a bunch of circles stacked on top of each other. To find the volume, first you need the area of the circle (πr², then you multiply by how many circles you are stacking on top of each other (height))

we know the diameter of the cylinder is 12 in. and the radius is half of the diameter.
half of 12 is 6, therefore the radius is 6 in. or r = 6
Assuming pi is 3.14, solve for the height of the cylinder
1470 = (3.14)(6²)(height)
1470 = 3.14 x 36 x height
1470 = 113.04 x height
height ≈ 13 in

Now that we know the height of the cylinder is about 13 in., we know the height of the cone, because the problem says that the height of the cone is half the height of the cylinder.
half of 13 is 6.5, therefore the height of the cone is 6.5
the radius of the cone is the same as that of the cylinder, 6 in.

volume of a cone = πr² × (height ÷ 3)

volume of the cone = (3.14)(6²)(6.5 ÷ 3)
volume of the cone = (3.14)(36)(2.16666)
volume of the cone = 244.92 in³

Now all that's left to find the volume of the whole cake is to add the volume of the cylinder to the volume of the cone.

1470 + 244.92 = 1714.92 in³

6 0

3 years ago

Plz help me thank you

d1i1m1o1n [39]

Answer:

I think and sorry if I am wrong but it is 780 ounces

5 0

2 years ago

Sine, cosines and tangent of 30 45 and 60 degrees

bonufazy [111]

Answer:

Sine 30 =

$\frac{1}{2}$

Sine 45 =

$\sqrt{ \frac{2}{2} }$

Sine 60 =

$\sqrt{ \frac{3}{2} }$

Cos 30 =

$\sqrt{ \frac{3}{2} }$

Cos 45 =

$\sqrt{ \frac{2}{2} }$

Cos 60 =

$\frac{1}{2}$

Tan 30 =

$\sqrt{ \frac{3}{3} }$

Tan 45 =

$1$

Tan 60 =

$\sqrt{3}$

Step-by-step explanation:

I hope it helps

3 0

3 years ago

Write the equation of a line perpendicular to the line y = 2x - 3 that goes through point (4,3). Convert the line to Slope-Inter

timama [110]

Answer:

y=-1/2x+5

Step-by-step explanation:

a line perpendicular to a given line will have a slope that is the negative reciprocal of the given one. this means the slope of the line perpendicular to the given one would be -1/2.

How I got this: 2 as a fraction would be 2/1, so the reciprocal would be 1/2, but we want the NEGATIVE reciprocal, so we multiply the fraction by -1, which gets us -1/2.

Now we know the slope of the equation that passes through (4,3) which is perpendicular to the given line.

y=-1/2x+b

b is the y-intercept, so we use the point (4,3) and the slope we were given to find out b.

when the point's x value is 0, the y value is the y intercept.

5 0

3 years ago