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ryzh [129]
3 years ago
11

Convert into scientific notation

Mathematics
2 answers:
vodka [1.7K]3 years ago
5 0

7.80

The coefficient must bebetween 1 and 10.

7.80x10^0

We move the decimal point 0 units or don't touch it at all.

0.00000032

3.2x10^-7

Remember that the negative exponent means the number is small and we move the decimal point to the left.

Hope it helps!

GraceRosalia

SOVA2 [1]3 years ago
3 0

Answer:

7) 7.8*10^0

8) 3.2 * 10 ^-7

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  

10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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In ΔABC, the measure of ∠C=90°, the measure of ∠B=15°, and BC = 2.8 feet. Find the length of CA to the nearest tenth of a foot.
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Answer:0.8 feet

Step-by-step explanation:got it right

7 0
3 years ago
HELP ME PLEASE PLEASE PLEASE
scoray [572]

If the angles of a convex octagon are 2x+6,x+13,2x-1,2x+12,2x-17,3x-4,3x-10,4x. then the smallest angle is 21°.

Given The exterior angles of convex octagon are 2x+6,x+13,2x-1,2x+12,2x-17,3x-4,3x-10,4x.

and we have to find the value of smallest angle.

The sum of the  angles of a convex octagon is 360°

so to calculate the smallest angle we need to find out the value of x first and which is calculated by summing up all the exterior angles and put them equal to 360.

(2x+6)+(x+13)+(2x-1)+(2x+12)+(2x-17)+(3x-4)+(3x-10)+4x=360

2x+6+x+13+2x-1+2x+12+2x-17+3x-4+3x-10+4x=360

2x+x+2x+2x+2x+3x+3x+4x+6+13-1+12-17-4-10=360

19x-1=360

19x=360+1

19x=361

x=361/19

x=19

Putting the value of x in all the angles and we will find the following:

2x+6=2*19+6=44

x+13=19+13=32

2x-1=2*19-1=37

2x+12=2*19+12=50

2x-17=2*19-17=21

3x-4=3*19-4=51

3x-10=3*19-10=47

4x=4*19=76

Hence among all the exterior angles the smallest angle is 21°.

Learn more about angles at brainly.com/question/25716982

#SPJ10

8 0
2 years ago
Trina's Toy Company charges $0.85 per pound to ship toys.
Triss [41]
A $0.85 x 2= amount for shipping.
B $0.85-0.05 = total cost for each pound
so the equation would be.
$0.85-0.05 = 0.8
0.8x2 = cost for 2 pounds of toys shipped 
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7 0
4 years ago
Como se hace -8n+7=31
velikii [3]
-8n+7=31
-8n+7-7=31-7
-8n=31-7
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-8n÷(-8)=24÷(-8)
n=24÷(-8)
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8 0
4 years ago
Two one-step equations
lesantik [10]
A. x + 5=12
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3 years ago
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