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Bond [772]
3 years ago
11

Solve the system of linear equations by elimination. x−2y=−7 3x+2y=3. solution: (_,_)

Mathematics
1 answer:
irga5000 [103]3 years ago
4 0

Step1: Multiply first equation by 5 and second by 2.

<span>Step2: </span>add the two equations together to eliminate y from the system.

Step 3:substitute the value for x into the original equation to solve for y.


The solution is:

x=1 y=2
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We do the same for the new shape, which now has a 7 in place of the 5. So 7x7x10=490.

Lastly, we subtract the volume of the new shape from the volume of the old shape to see the difference. So, 490-250=240.

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Which equation represents a line parallel to 3x-8y=12?
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Answer:

B. y = -3/8x - 4

Step-by-step explanation:

Given equation: 3x - 8y = 12

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y = -3/8x + 12/8

y = -3/8x + 3/2

Slope m = -3/8

Since the slope of a line parallel is the same slope, the only equation that fits the conditions is B because in the form y = mx + b, m = -3/8

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3 years ago
Enter the equation of the circle described below.<br> Center (-3, 0), radius sqrt 5
stealth61 [152]
Hello : 
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12. The function M(h) = 10e-0.173h can be used to find the number of milligrams M of morphine that is
vodomira [7]

Answer:

Part A; Initial dosage is 10 milligrams

Part B:

8.4113 milligrams after 1 hour

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After 1 hour, plug in h as 1

So, M(1)=10e^{-0.173*1}

Simplify the right side

M(1)=10(0.84113)

M(1)= 8.4113 milligrams.

Now, after 4 hours

M(4)=10 e^{-0.173*4}

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3 years ago
A 3cm×10cm rectangle sits inside a circle with radius of 12. Find the area of the shaded region
kolezko [41]

Answer:

422.4cm²

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