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Novosadov [1.4K]
3 years ago
14

MATH QUIZ PLEASE HELP!

Mathematics
1 answer:
Nookie1986 [14]3 years ago
5 0

Answer:

3. The account gains $5.72 every year

Step-by-step explanation:

We can clearly see from the graph that the first 2 answers are both true:

In 2007 (the "2" on the x axis) there was 124.44 dollars in the account, and it gained more money from 2013-2015 than from 2005-2007.

Because #2 is correct we know that #4 is also correct. Exponential growth means that the growth is not constant but steadily rises. So because there's more money gained in later years than in earlier years, we know this is true.

#3 However conflicts with #4. If it gains exactly $5.72 every year then that would not be exponential growth.

So by process of elimination you get option #3 as the false statement.

Hope this helps! :)

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Find the value of sin(a/2) if cosa= 12/13<br>​
daser333 [38]

Answer: sin\frac{a}{2} = ± \frac{1}{\sqrt{26} }

Step-by-step explanation:

We very well know that,

cos2A=1−2sin²A

⟹ sinA = ±\sqrt{(1-} \frac{cos2A}{2} )

As required,  set A = \frac{a}{2}   &   cos a=  \frac{12}{13}    ,thus we get

sin \frac{a}{2} =± \sqrt{\frac{1-cos a}{2} }  

∴ sin\frac{a}{2} =±\sqrt{\frac{1-\frac{12}{13} }{2} } = ± \frac{1}{\sqrt{26} }

   since ,360° < \frac{a}{2} <450°

             ,180° < \frac{a}{2} <225°

Now, we are to select the value with the correct sign. It's is obvious from the above constraints that the angle a/2 lies in the III-quadrant where 'sine' has negative value, thus the required value is negative.

hope it helped!

   

5 0
3 years ago
Robert wears a suit o work every day. In his closet, he has 3 blazers, 5 button-up shirts, 12 bow ties, 6 pairs of pants, and 3
mars1129 [50]

Answer: 3

Step-by-step explanation:

He can put 3 different outfits together

3 0
3 years ago
The expression below represents the vertical height above the ground, in meters, of a roller coaster when it is x meters away fr
luda_lava [24]

Answer:

D.) the initial height of the roller coaster

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the value of cos theta given that (- 5, - 4) is a point on the terminal side of theta ?
Arte-miy333 [17]

Answer:I believe it's -5√41/41

Step-by-step explanation:

5 0
3 years ago
Write 4x10 to the power of 6 in decimal notation.
Inga [223]

Answer:

Since the exponent of the scientific notation is positive, move the decimal point 66 places to the right.

4000000

5 0
3 years ago
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