1 year ago

2

Mathematics

1 answer:

nignag [31]1 year ago

6 0

Answer:

1st = 4×10 ^-9

2nd= 4×10^1

3rd = 4×10^7

4th = 4×10^-5

Step-by-step explanation:

for whole numbers you just have to count from the ending till the number indicated beside the x10

for decimals you count from the front starting at the decimal till you cover the whole number

You might be interested in

32 ÷ 4 x (16 x 1/2) -2

Anika [276]

32 ÷ 4 x (16 x 1/2) -2

= 32 ÷ 4 × 8 -2

= 8 × 8 - 2 = 64-2

= 62

3 0

2 years ago

Read 2 more answers

The music you hear when listening to a magnetic cassette tape is the result of the magnetic tape passing over magnetic heads, wh

Elden [556K]

Using the given formula T = LS

And given the time is 3 minutes (3 x 60 = 180 seconds)and the speed is 4-1/2 inches per second:

180 = L x 4-1/2

Solve for L by dividing both sides by 4-1/2:

L = 180 / 4-1/2

L = 40

The length should be 40 inches.

7 0

3 years ago

What is the exact area of a circle with a diameter of 10 cm? a. 5πcm^2 b. 10πm^2 c. 25πcm^2 d. 100πcm^2

dalvyx [7]

Answer:

Step-by-step explanation:

a= $\pi$ r^2

To find the radius, divide the diameter by 2

r=d/2

r=10/2

r=5

a= $\pi$ r^2

a= $\pi$ 5^2

a=25 $\pi$

So, choice C is correct

Hope this helps! :)

4 0

3 years ago

Please help I don’t understand

madam [21]

I don’t get it either

3 0

2 years ago

Each of the c children at a park will receive at least 3 balloons. If 150 balloons are given out in all, what is the maximum num

Marizza181 [45]

Answer:

Step-by-step explanation:

150 divided by 3 = 50

3 0

3 years ago

Read 2 more answers