How many significant digits are in 80,000

Answers

Answer 1
Answer: 2 because the equation can be reduced to: 8.0 x 10^4.
Answer 2
Answer: Actually it's 5 because there is no decimal space and if you only include 8 then that means the number is actually 8.

Related Questions

123b is 0.4 of what number
Simplify showing all steps:
Suppose the volume of milk in a glass is 230 cubic cm. If 1 gallon of milk equals 3.79 liters, how many glasses of milk are in 1 gallon?a. 1 glassb. glassesc. 16 glasses
A potter uses 3/5th of a pound of clay to make a bowl. How many bowls could the potter make from 10 pounds of clay?
The zeros of the function f(x) = (x + 2)^2 - 25 are(1) -2 and 5 (3) -5 and 2(2) -3 and 7 (4) -7 and 3

Circumference of the circle is 2.54 what's the area

Answers

A= π r^2, and we don't know r, so we'll have to use r = √C/π.

√C is and infinite number, and the square root of 
π is an infinite number, so this problem is impossible.

If Ying Zyiyu covers the first 200 miles of a trip going at 50 mph and the last hundred going 40 mph, what was his average speed for the entire trip?

Answers

the person covers different distances at different speeds

to find the average speed we have to find the total distance travelled and the total time taken

average speed = total distance travelled / total time taken


first 200 miles

speed - 50 mph

time taken for 50 miles - 1 hour

then time for 200 miles - 1/50 x 200 = 4 hours


last 100 miles

speed - 40 mph

time taken for 40 miles - 1 hour

time for 100 miles - 1/40 x 100 = 2.5 hours


total time taken for a distance of 300 miles - 2.5 + 4 = 6.5 hours


average speed = 300 miles / 6.5 hours = 46.2 mph

average speed is 46.2 mph

Find the value of r in (4, r), (r, 2) so that the slope of the line containing them is −53Question 7 options:

a)

−17

b)

-7


c)

7


d)

17

Answers

Answer:

C) 7

===========================================

Work Shown:

Use the slope formula

m = (y2-y1)/(x2-x1)

Plug in the given slope we want m = -5/3 and also the coordinates of the points. Then isolate r

m = (y2-y1)/(x2-x1)

-5/3 = (2-r)/(r-4)

-5(r-4) = 3(2-r) .... cross multiplying

-5r+20 = 6-3r

-5r+20+5r = 6-3r+5r .... adding 5 to both sides

20 = 6+2r

20-6 = 6+2r-6 ....subtracting 6 from both sides

14 = 2r

2r = 14

2r/2 = 14/2 .... dividing both sides by 2

r = 7

The slope of the line through (4,7) and (7,2) should be -5/3, let's check that

m = (y2-y1)/(x2-x1)

m = (2-7)/(7-4)

m = -5/3

The answer is confirmed

Answer:

C)  7

Correct answer

Step-by-step explanation:

Which answer is the solution set in simplest form 6x-1/5=3/1

Answers

6x - 1/5 = 3

Do the inverse operation.

6x - 1/5 = 3
     +1/5    +1/5

6x = 3 1/5

6x/6 = 3 1/5 /6

KCF:- Keep the first fraction, change the sign, flip the second fraction.

3 1/5 divided by 6/1

3*5 +1 = 15+1 =16

16/5 * 1/6

16*1 = 16
5*6 = 30

16/30 = 16/2 and 30/2
8/15

Final answer: x = 8/15
6x -  (1)/(5) =  (3)/(1) \n \n 6x -  (1)/(5) = 3 \n \n  6x = 3 + (1)/(5) \n \n 6x =  (16)/(5) \n \n x =  (16)/(5 * 6) \n \n x =  (16)/(30) \n \n x =  (8)/(15) \n \n Answer: \fbox {x = 8/15} \ or \ \fbox {x = 0.5333}

A sector of a circle is shown. Find its area, rounded to the nearest tenth. A)
9.8 cm2

B)
10.5 cm2

C)
11.2 cm2

D)
12.3 cm2

*I would like to know how you did it too*

Answers

The area of the sector of the circle, to the nearest tenth is: B. 10.5 cm²

What is the Area of the Sector of a Circle?

Area of the sector of a circle = ∅/360 × πr².

r = radius.

Given:

∅ = 68°

Radius (r) = 4.2 cm

Substitute

Area of the sector = 68/360 × π × 4.2²

Area of the sector = 10.5 cm²

Learn more about area of sector on:

brainly.com/question/22972014

Area of a circle = pi * radius^2
But we're not talking about a whole circle, but a portion of the circle.
The proportion of the area of the whole circle occupied by this sector is equal to the ratio of the created angle to the angle of a whole circle;
that may seem a bit confusing but basically:
Area of the sector = pi * radius^2 * 68/360
so...
Area = pi * (4.2)^2 * 68/360
= 10.467...
= 10.5 cm^2

What is 7% of 120 is


simplify

Answers

7% of 120 is 8.4

Change the percentage into a decimal by dividing it over 100:

7 / 100 = 0.07

Multiply:

0.07 × 120 = 8.4
7% of 120 is:
0.07 x 120
=42/5
=8.4

If you need any more help feel free to ask.