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kiruha [24]
3 years ago
10

Hii I need the 7th and 8th question asap will mark brainliest 100% to who ever answers first and right thank you

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
8 0
8. EFD = 180 - EFA - AFC = 180 - 42 - 68 = 70
7. 100 and 80
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Pete wants to mix 4 quarts of 20% orange juice concentrate with some 60% pineapple juice concentrate to get a 50% punch concentr
Musya8 [376]

Answer:

20% oj

60% pn

= 80%

80 -50 =30

so 30% pineapple concentrate to omit

4 0
3 years ago
Suppose 6 quarts of a solution that is 52% antifreeze is mixed with 10 quarts of a solution that is 32% antifreeze. (A) how many
Vadim26 [7]
The total amount of the resulting mixture can be calculated by adding up the volume of the given substances assuming that volume addition is applicable given the properties of the fluids used. 

That is,
   T = 6 quarts + 10 quarts = 16 quarts

The total volume of the resulting mixture is 16.

Then, we do the component (antifreeze) balance by adding up the resulting antifreeze from the substances to the total. We let x be the percentage of antifreeze in the final mixture.

    6(0.52) + 10(0.32) = 16(x)

The value of x from the equation is 0.395.

Therefore, the answer to this item is 39.5%. 
4 0
3 years ago
2<br> 2<br> (2,2)<br> 4<br> 2<br> 2<br> 4<br> x<br> -2<br> (1,-2)What is the slope
GarryVolchara [31]

Answer:

21

Step-by-step explanation:

8 0
3 years ago
Use Laplace transform methods to solve the differential equation: The initial conditions are f(0) = 0 and <img src="https://tex.
Llana [10]

Answer:

Step-by-step explanation:

\frac{d^2 y}{dt^2} +12\frac{dy}{dt} +32y = 10e^{-2t} where f(x) is replaced by y

Take Laplace on both sides

s^2 Y -s(0)-0 +12s Y-0+32Y = \frac{10}{s+2} \\Y(s^2+12s+32) =  \frac{10}{s+2}\\Y =  \frac{10}{(s+2)(s+4)(s+8)}

We can resolve into partial fraction to get Y = L(y)

Let this equals

\frac{A}{s+2} +\frac{B}{s+4} +\frac{C}{s+8} \\10 = A(s+4)(s+8) + B(s+2)(s+8) +Cs+4)(s+2) \\

Solving we get

s=-9

24C = 10 or C =5/12

s=-2:  A=10/12=5/6

s=-4: B = -5/4

Taking inverse Laplace

y(t) = \frac{-5e^{-4t} }{4} + \frac{5e^{-8t} }{12} +\frac{-5e^{-2t} }{6}

6 0
3 years ago
PLS HELP 25 POINTS NO CAP PLS BRAINLEIST
Oliga [24]

Answer:

I can't see the picture or handwriting

7 0
3 years ago
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