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Nat2105 [25]
2 years ago
7

The volleyball team is having a car wash fundraiser to buy new uniforms. They spent $25 on supplies and charge $8 for every car

they wash. How many cars will they have to wash in order to raise $300 for their uniforms? Write the step plzz
Mathematics
2 answers:
Stella [2.4K]2 years ago
4 0
About 38 cars. 300/8= 37.5 cars. There is no such thing as 0.5 of a car so round up to the nearest whole number.
LUCKY_DIMON [66]2 years ago
3 0

37.5 cars, or rounding it up to the nearest whole number 38 cars.

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Find all solutions of the equation in the interval [0, 2pi).
natali 33 [55]

Answer:

Step-by-step explanation:

Begin by squaring both sides to get rid of the radical. Doing that gives you:

sin^2x=1-cosx

Now use the Pythagorean identity that says

sin^2x =1-cos^2x and make the replacement:

1-cos^2x=1-cosx. Now move everything over to one side of the equals sign and set it equal to 0 so you can factor:

1-cos^2x+cosx-1=0 and then simplify to

cosx-cos^2x=0

Factor out the common cos(x) to get

cosx(1-cosx)=0 and there you have your 2 trig equations:

cos(x) = 0 and 1 - cos(x) = 0

The first one is easy enough to solve. Look on the unit circle and see where, one time around, where the cos of an angle is equal to 0. That occurs at

x=\frac{\pi }{2},\frac{3\pi}{2}

The second equation simplifies to

cos(x) = 1

Again, look to the unit circle and find where the cos of an angle is equal to 1. That occurs at π only.

So, in the end, your 3 solutions are

x=\frac{\pi}{2},\pi,\frac{3\pi}{2}

8 0
3 years ago
Write the equation of a line that is parallel to the following:<br><br> 1. x = 5<br><br> 2. y = -3
sineoko [7]

Answer:

1.  x=6

2.  y=2

Step-by-step explanation:

If x=5, the line is vertical, so we need a vertical line so that we are parallel.  A vertical line is x= a constant

We can choose the value for x as long as it is not 5, that would make it the same line.  I will choose x=6

If y=-3=5, the line is horizontal, so we need a horizontal line so that we are parallel.  A horizontal line is y= constant

We can choose the value for y as long as it is not -3, that would make it the same line.  I will choose y=2

3 0
3 years ago
What is the answer to 4+2(x-3)=-8
Afina-wow [57]

Answer: x= -3

Step By Step Explanation:

3 0
2 years ago
PLSSS HELP 50 POINTSS ILL SEND 40 MORE IF U HELPP PLSSS
Vlada [557]
1) y=53

2)53

21 is 2 thirds of 32 so you add them together and get 53. Also Y=Cost of last years trip which we determined is $53
3 0
2 years ago
The length of a rectangle is 8 cm greater than its width. Find the dimensions of the rectangle if its area is 105 square centime
Nikitich [7]

Answer:

105 = (w+8) *w

w = 7 cm

l = 15 cm

Step-by-step explanation:

Area of a rectangle is

A = l*w

l = w+8

105 = (w+8) *w

Distribute

105 = w^2 +8w

Subtract 105 from each side

105-105 = w^2 +8w -105

0 =w^2 +8w -105

Factor

What 2 number multiply to 105 and add to 8

15*-7 = -105

15-7 = 8

(w+15) (w-7) =0

Using the zero product property

w+15 =0               w-7 =0

w=-15                      w=7

impossible

not negative

w =7

l = 15

7 0
3 years ago
Read 2 more answers
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