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Serga [27]
3 years ago
6

QUIZ

Mathematics
1 answer:
Dominik [7]3 years ago
7 0

Answer:

C

Step-by-step explanation:

O x² + 9x -3x – 27 = (x + 9)(x – 3)

x² + 6x - 27 = (x + 9)(x - 3)

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Answer:253.33...

Step-by-step explanation:

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Erin finds 5% sales tax for a shirt that costs $21. She calculates the tax as
kkurt [141]

Answer:  

Step-by-step explanation:

a.  Bicycle  (1.07 x 45.90)

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3 0
2 years ago
Given cos 0 = 3/5 and 0 is in Quadrant I, what is the value of tan 0 ?
olga_2 [115]

Answer:

4 / 3

Step-by-step explanation:

cos θ = 3 / 5

cos 53 = 3 / 5

θ = 53

tan θ = sin θ / cos θ

sin 53 = 4 / 5

tan 53 = sin 53 / cos 53

= ( 4 / 5 ) / ( 3 / 5 )

= ( 4 / 5 ) x ( 5 / 3 )

= ( 4 x 5 ) / ( 5 x 3 )

tan 53 = 4 / 3

4 0
2 years ago
HELP BECAUSE IM STUPID!
mixer [17]
I don't think you're stupid. ^^
Let's take the third term, 8. If n=3, then an should be 8.
The first answer gives 15+2.5*3=22.5.
The second answer gives 15.5+2.5=23.
The third answer gives 15-2.5*3=7.5.
The fourth answer gives 15.5-2.5*3=8.
Choice 4 is correct.

Let's try to actually find the equation on our own.
The equation for an arithmetic series is an=a0+dn where a0 is the term that comes before the first term.
The first term given is 13 and it decreases by 2.5 each time so n=-2.5 and the term that would be before 13 is 15.5.
Thus the equation is an=15.5-2.5n
6 0
3 years ago
Read 2 more answers
5x+30=7x+20<br> Bbbbnnvvvcvhbx
ollegr [7]
X=5 is the answer for this problem
3 0
3 years ago
Read 2 more answers
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