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Sliva [168]
3 years ago
7

Please help!!!!! Ty!!!!

Mathematics
1 answer:
aalyn [17]3 years ago
3 0

Answer:

3000 + 250x = his monthly pay

Step-by-step explanation:

x=how many cars he sells

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Q#3. if cos x = sqrt(2)/2, and 3pi/2 < x < 2pi, what is sin(x + pi/3)
garri49 [273]

#3 sin(x) = -sqrt(2)/2 so x = 315 degrees. So we have sin(x+pi/3) = sin(375) = sin(15) which in exact form would be (sqrt(3) -1)/(2sqrt(2))


#4 to find x we take the arctan(20/21) which is approximately 43.6 degrees and add 180 to it since it's in the 3rd quadrant which is 223.6 degrees so we do sin(223.6 + 90) = sin(313.6) which equals -21/29. This can also be done with the pythagorean theorem. -21/29.


#5 13^2 - 5^2 = 12^2. so sin is -12/-13 = 12/13. we take arcsin of that and add 180 and then divide by 2 and take the sin of that and its approximately 3/sqrt(13).


#6 sin is 4/5 so we take arcsin of that and get 143.13 which -60 is 83.13 and we take the sin of that to get 3/10 + 2sqrt(3)/5


Hope this helped :L

5 0
3 years ago
How far along a motorway would you travel if you drove at 70 mph for 4 hours
MaRussiya [10]

Answer:

280 miles

Step-by-step explanation:

in one hour, you would travel 70 miles because you are going at the speed of 70mph

so to find out how far you go in 4 hours you would multiply 70(mph)×4(hrs) which would be?

280 miles

5 0
3 years ago
Read 2 more answers
-1/2 (10+1/4)
andriy [413]

Answer:

-5 1/8

Step-by-step explanation:

-5 1/8

7 0
2 years ago
The graph of which function will have a maximum and a y-intercept of 4?
stiv31 [10]

Answer:

<h2>f(x) = -x² + 2x + 4</h2>

Step-by-step explanation:

We have quadratic functions f(x) = ax² + bx + c.

c - y-intercept

If a > 0, then a parabola opens up and has a minimum in a vertex.

If a < 0, then a parabola opens down and has a maximum in a vertex.

The function has maximum and y-intercept of 4:

a < 0 and c = 4

4 0
3 years ago
Jacob is going on a road trip across the country . He covers 10 miles in 15 minutes . He spends 10 minutes buying gas and some s
iren [92.7K]

Answer: 3.33miles

Step-by-step explanation:

given data:

distance covered in first 15 minutes = 10 miles

time spent buying gas and some snacks = 10mins.

= 10/15 * (15 –10 )

= 3.33miles

jacob has traveled 3.3miles between 10 and 15 minutes.

3 0
3 years ago
Read 2 more answers
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