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olganol [36]
2 years ago
8

PLEASE HELP pleaseee this is due very soon and I can’t afford to fail

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
8 0
I’m not sure but I think x=24 and y= 20
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Find the circumference leave the answer in terms of pi
Sladkaya [172]
C = 3.14 x D or C = 2 x 3.14 x R

So, C = 2 x 3.14 x 20

The answer is 40pi.


3 0
3 years ago
How do you simplify #(-3 - 2i)(-3 + 3i)#?
dybincka [34]
So, ( -3 - 2i )( -3 + 3i ) = 9 - 9i +6i - 6i^2 = 9 - 3i - 6·(-1) = 9 + 6 - 3i = 15 - 3i;
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7 0
3 years ago
How many pounds of candy that cells for $0.66 per Ib must be mixed with candy that sells for $1.31 per Ib to obtain 9 Ib of a mi
faltersainse [42]

Answer:  \frac{306}{65} pounds

Step-by-step explanation:

Let x pounds of $ 0.66 per lb candies mixed with y pounds of $ 1.31 per lb candies to obtain 9 lb of $ 0.97 per lb candies,

Hence, we can write,

x + y = 9 ------- (1)

And, 0.66 of x + 1.31 of y = 0.97 of (x + y)

⇒ 66 x + 131 y = 97 (x+y)

⇒ 66 x +131 y - 97 x - 97 y = 0

⇒ -31 x + 34 y = 0  ------(2)

By solving equation (1) and (2)

We get,

x=\frac{306}{65} and y=\frac{279}{65}

Hence, the quantity of 0.66 per lb candies = \frac{306}{65}  pounds

7 0
2 years ago
The graphs of the equations y=2x-7 and y-kx=7 are parallel when k equals
Slav-nsk [51]
y=2x-7 \ and \ y-kx=7 \\ \\ y=2x-7 \ and \ y=kx+7 \\ \\ two \ lines \ are \ parallel \ if \ their \ slopes \ are \ the \ same : \\ \\ k= 2


7 0
3 years ago
The amount of mass transported via a pipe over a period of time can be computed as M = t2 t1 Q(t)c(t) dt where M = mass (mg), t1
Sliva [168]

Answer:

The solution and complete explanation for the above question and mentioned conditions is given below in the attached document.i hope my explanation will help you in understanding this particular subject.

Step-by-step explanation:

6 0
3 years ago
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