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4 years ago

9

Pls help!! I’m confused

2 answers:

jonny [76]4 years ago

8 0

3.105 x 10 to the 7 power because you move right 7 times

igor_vitrenko [27]4 years ago

3 0

3.105 x 10^-7

You have to move the decimal point until it is between two numbers that is not 0. Since you have to move it seven times to the right it is 10 to the power of -7. Negative goes right positive goes left. After you move the decimal to the appropriate place, that will be your new number. Then you just put everything together.

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Guys math homework trigonomerty plz help

zloy xaker [14]

Answer:

19.3 m²

Steps:

Area of octagon : 2 ( 1 + √2 ) * a² ........ <u>where a is length of each side</u>

using the formula: 2 ( 1 + √2 ) * 2²

: 2 ( 1 + √2 ) * 4

: ( 8 + 8√2 ) m²

: 19.3 m² ...............our final answer in three significant fig

8 0

3 years ago

Read 2 more answers

Suzanne wants to put a fence around her square garden. If the garden covers an area of 49ft^2, how many feet of fencing does she

lina2011 [118]

Answer:

The area for a square is given by:

$A = x^2$

And we can find the dimension for one side like this:

$x = \sqrt{A}$

Replacing we got:

$x = \sqrt{49 ft^2}= 7ft$

Then since we are interested in the how many feet of fencing does she need, we can find the perimeter given by:

$P = 4x$ and replacing we got:

$P = 4*7 ft = 28 ft$

Step-by-step explanation:

For this case we know that Suzanne want to put a fance around a square garden with an area of 49 ft^2

The area for a square is given by:

$A = x^2$

And we can find the dimension for one side like this:

$x = \sqrt{A}$

Replacing we got:

$x = \sqrt{49 ft^2}= 7ft$

Then since we are interested in the how many feet of fencing does she need, we can find the perimeter given by:

$P = 4x$ and replacing we got:

$P = 4*7 ft = 28 ft$

8 0

3 years ago

David makes $16.40 per hour. Any hours worked over 40 hours in a week are paid at time-and-a-half. David worked 47 hours last

Maurinko [17]

Answer:

A: $656 B: $24.6 per hour, $172.2 total overtime pay. C: $828.2

Step-by-step explanation:

A: multiply 16.4 times 40

B: <u>16.4 / 2 = 8.2</u> <u>8.2 + 16.4 = 24.6. </u> <u>24.6 times 7 is 172.2</u>

C: Add overtime pay and regular pay to get total gross pay.

8 0

2 years ago

Read 2 more answers

Help! Just a little more

riadik2000 [5.3K]

Answer:

x = 7

y = 8

Step-by-step explanation:

4y-4 = 28

4y = 32

y = 8

10x+65 = 135

10x = 70

x = 7

3 0

3 years ago

Read 2 more answers

Place the numbers in the boxes to<br> show expanded form of 43,219.<br> 4913

timama [110]

3 thousands (the 4 is in the ten thousands place)
2 hundreds
1 tens
9 ones

5 0

3 years ago