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gregori [183]
3 years ago
7

How many significant digits in 8.90

Mathematics
2 answers:
PtichkaEL [24]3 years ago
8 0

Answer:

2

Step-by-step explanation:

s344n2d4d5 [400]3 years ago
8 0

Answer:

Only 2, the 0 is not needed so it should just be 8.9

Step-by-step explanation:

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Letters a, b, c, and d are angle measures. Which should equal 105° to prove that f ∥ g?
Lady bird [3.3K]
I think C.......................................................  
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3 years ago
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In the following figure CB is perpendicular to AB, and CD bisects angle ACB. Find angle DBF
zaharov [31]
Measure angle ACD = 3x - 2
measure angle BCD = 5x - 20
measure angle ACD = measure angle BCD
3x - 2 = 5x - 20
-2 = 2x - 20
18 = 2x
9 = x
x = 9
measure angle BCD = 5x - 20
measure angle BCD = 5(9) - 20
measure angle BCD = 45 - 20
measure angle BCD = 25
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measure angle BDC = measure angle CDA
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5 0
3 years ago
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Use the unit circle to find the value of tan 30
Harlamova29_29 [7]

Answer:

\frac{\sqrt{3}}{3}

Explanation:

\sin(30^{\circ}) = \frac{1 }{2 }

\cos(30^{\circ}) = \frac{\sqrt{3} }{2 }

\tan(30^{\circ}) = \frac{\text{opposite} }{\text{adjacent} }

\tan(30^{\circ}) = \frac{\frac{1 }{2 }} {\frac{\sqrt{3} }{ 2}}

\tan(30^{\circ}) = \frac{1 }{2 } \times{\frac{2}{\sqrt{3} }}

\tan(30^{\circ}) = \frac{1}{\sqrt{3}}

\tan(30^{\circ}) = \frac{\sqrt{3}}{3}

7 0
3 years ago
I need help with this​
Lunna [17]

Answer:hbygyhbhbhb

scamed for points

Step-by-step explanation:

5 0
3 years ago
Solve this equation.<br> 5x-2y=3<br> y=2x
insens350 [35]

Answer:

3

Step-by-step explanation:

5x-2y=3  when: y=2x

1. Plug in the y-value (y=2x) into the equation (5x-2y=3). The equation should then look like 5x-2(2x)=3

2. Simplify:

5x-2(2x)=3

5x-4x=3

1x=3

x=3

Check:

5x-2(2x)=3 (plug in the x-value you solved for: 3)

5(3)-2×2(3)=3

15-2×6=3

15-12=3

3=3

Hope this helped !

Cheers, Z

8 0
3 years ago
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