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3 years ago

Round 0.9998 to 3 decimal places

2 answers:

5 0

<span>In the laws of mathematics, especially in rounding off digits, you should take note of the digit following that number no matter how long or short a number is. If the number is preceded by numbers between 0-4, the number does not change. However if its is preceded by numbers between 5-9, add one to the number. In this problem, you are required to round off each number to the nearest ten million before adding them. So 0.9998 is equal to 1 </span>

mojhsa [17]3 years ago

3 0

The answer would be one because .9998 would round the 9 to a 10 which would round the second 9 and then the third nine to make 1

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A framing company is putting out a new product this summer. The width of the frame will be uniform all the way around. The desig

Lisa [10]

Answer:

Correct option: Fourth one -> 2.2 cm

Step-by-step explanation:

The inside of the frame is 10 cm by 8 cm. To find the whole frame, we need to add two times the width of the metal to each dimension, so the final dimension is 10+2x cm by 8+2x cm.

The area of the frame itself is the area with the bigger dimensions (10+2x and 8+2x) minus the inside area (80 cm2)

If the final area is 100 cm2, we have that:

Area = (10+2x) * (8+2x) - 80

100 = 80 + 36x + 4x2 - 80

4x2 + 36x -100 = 0

x2 + 9x - 25 = 0

Using Bhaskara's formula to solve the quadratic function, we have:

Delta = 81 + 4*25 = 181

sqrt(Delta) = 13.45

x1 = (-9 + 13.45)/2 = 2.225 cm

x2 = (-9 - 13.45)/2 = -11.225 cm (not a valid measurement)

So the width x of the metal is 2.2 cm

Correct option: Fourth one

8 0

3 years ago

Find the length of this

Keith_Richards [23]

Answer:

Hey there!

We have tan 9= 21/BW

tan 9 (BW)=21

BW= 21/tan 9

BW= 132. 59

Hope this helps :)

4 0

3 years ago

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Find the midpoint of the segment with the given endpoints for (-3,2) and (-6,-6)

Tems11 [23]

Use the midpoint formula it’s pretty straightforward from there. (-4.5 , -2)

6 0

3 years ago

Find the volume of the cone round your answer to the nearest tenth

Ainat [17]

Answer:

209.43951 round to the nearest tenth is 209.44

Step-by-step explanation:

A cone with a base radius of 5 units and a height of 8 units has a volume of 209.44 cubed units.

If a cone has a flat bottom, meaning the height and radius meet at right angles, then this formula can be used to find of volume ('V') of that cone (also know as a right circular cone):

V = 1/3(PI*r squared * h )

The volume of a cone can be calculated by taking one-third of the result of the radius squared, multiplied by the height, multiplied by the mathematical constant pi.

Here is a step-by-step case that illustrates how to find to volume of a cone with a radius of 2 feet and a height of 3 feet. Note that in order to save space (and because pi cannot be determine precisely) a limited number of decimal places are used, the symbol ~ denotes that this answer is an approximation.

V = 1/3(pi * r^2 * h)

= 1/3(pi * 2^2 * 3)

= 1/3(pi * 12)

= 1/3(37.7)

~ 12.6 cubic feet

Hope this helps!!

6 0

3 years ago

Cos2a=1-2sin^2a for all values of a.

pickupchik [31]

$cos2a= cos^{2} a- sin^{2} a \\ but \ cos^{2} a + sin^{2} a=1 \\ i.e. \ cos^{2} a=1- sin^{2} a$
Therefore,
$cos2a=1- sin^{2} a- sin^{2} a \\ =1-2 sin^{2} a$

6 0

3 years ago

Read 2 more answers