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nexus9112 [7]
4 years ago
8

Could you please help!

Mathematics
1 answer:
Otrada [13]4 years ago
3 0

There are 1000 meters in 1 kilometer so you can set up a proportion to find the number of meters. 1000m / 1km = x / 40075 km cross multiply and you get the answer of 40,075,000 meters. To change to scientific notation, move the decimal point next to the 4 (becuase 4.0075 is less than 10) and you get the answer of 4.0075 x 10^7 meters.

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(5,7) (7,9) find slope
evablogger [386]

Answer:

1

Step-by-step explanation

Since you are given two points you can calculate the slope by use the formula Y1-Y2/X1-X2.

In this case:

Y1 = 5

Y2 = 7

X1 = 7

X2 = 9

(5-7)/(7-9) = -2/-2 = 1

8 0
3 years ago
Several different cheeses are for sale. The cheese comes in wedges
Tpy6a [65]

Answer:

39.30 cm^{2}

Step-by-step explanation:

The area of the top surface of the wedge is the same as the area of a sector.

Area of a sector = (θ/360^{o})\pir^{2}

where: θ is the central angle, and r is the radius.

Given that: central angle = 45^{o}, radius = 10 centimetre.

Area of the top surface = Area of a sector = (θ/360^{o})\pir^{2}

                                      = \frac{45^{o} }{360^{o} } x \frac{22}{7} x (10)^{2}

                                      = \frac{1}{8} x \frac{22}{7} x 100

                                      = 39.2857

                                     = 39.30 cm^{2}

The area of the top surface of the wedge is 39.30 cm^{2}.

3 0
3 years ago
Read 2 more answers
60 PNTS and Brainliest to whoever answers all 3 correctly!! I will be double checking the work....
Taya2010 [7]
1)
-280 
= -14<span>π / 9
answer is B.
----------------------

2)
3</span><span>π/ 5 
</span><span>= 108

answer
C. 108 degrees

3)
cos (3</span>π/4) = -√2 / 2
sin ((3π/4) = √2 / 2
cos (3π/4) and sin ((3π/4) = -√2 / 2 * √2 / 2
<span>
answer is
</span> -√2       √2 
------ * --------
  2          2<span>


</span>
4 0
3 years ago
Match the number of the solution to the letter of the problem to learn the name of one of the greatest mathematical minds who ev
emmasim [6.3K]
The answer is 4.4445373
8 0
3 years ago
Express the following in scientific notation: 0.0000079
Law Incorporation [45]

Answer:

7.9 * 10 ^-6

Step-by-step explanation:

Move the decimal 6 places to the left so there is one number before the decimal

0.0000079

7.9

The exponent is -6  ( negative because we moved it to the left)

7.9 * 10 ^-6

4 0
3 years ago
Read 2 more answers
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