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Sever21 [200]
3 years ago
14

A dark contains 133 pennies a bigger jar contains one into seven times as many pennies what is the value of the pennies in the b

igger jar
Mathematics
1 answer:
MaRussiya [10]3 years ago
7 0
Here is the equation for it 1÷7z=133 the answer to that equation would be 18.85 if I'm right I might be wrong on this problem
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Solve 3-2cos²x-3sinx=0 for 0≤x≤360
crimeas [40]
<span>3-2(Cosx)^2 - 3Sinx = 0.

Recall (Sinx)^2 + (Cosx)^2  = 1.
Therefore  (Cosx)^2 =  1 - (Sinx)^2
Substitute this into the question above.

</span><span>3-2(Cosx)^2 - 3Sinx = 0
3 - 2(1 - (Sinx)^2)  - 3Sinx = 0  Expand
3 - 2 + 2(Sinx)^2  -  </span><span><span>3Sinx = 0</span>
1 + 2(</span><span>Sinx)^2  - 3Sinx  = 0  Rearrange
2(Sinx)^2 </span><span><span>- 3Sinx + </span>1  = 0 
Let p = Sinx
2p^2  -  3p + 1  = 0    Factorise the quadratic expression
2p^2 - p - 2p +1 = 0
p(2p -1) - 1(2p -1) = 0
(2p-1)(p -1) = 0

Therefore  2p-1=0    or  (p-1) = 0
2p=0+1    or  (p-1) = 0
2p=1       or    p = 0 +1.
p=1/2       or  p = 1            Recall p = Sinx

Therefore Sinx = 1/2 or 1.
For  0<u><</u>x<u><</u>360

Sinx =1/2,  x = Sin inverse (1/2) , x = 30, 
                                   (180-30)- 2nd Quadrant = 150 deg
Sinx = 1,  x = Sin inverse (1) , x = 90

Therefore x = 30,90 & 150 degrees.

Cheers.</span>
7 0
3 years ago
pet store has 18 hamsters in each cage. how many hamsters are there in six cages? use and area model to solve
pogonyaev
108 because theres 18 in in one and your finding out how much in 6 so 18*6=108
3 0
3 years ago
Please Help POINTS: 15 (look at the screenshot below)
lord [1]
D: 2/1

EXPLANATION:
Jacob has 8

Antonio has 4.

8/4 is the ratio

8/4 can be simplified to 2/1

Hope this helps!
6 0
3 years ago
25x-5 but the expression as a product
Sever21 [200]

Answer:5(5x-1)

Step-by-step explanation: for a product the equation above

25x-5

Since 5 is divisible by 25

25/5=5

5/5=1

5(5x-1)

3 0
3 years ago
How man different rectangular prisms can be built from 18 cubes
Sever21 [200]
You can make 4 out of 18 cubes
3 0
3 years ago
Read 2 more answers
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