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Dvinal [7]
2 years ago
12

Which three test points could be used to draw the graph of the solutions to x² + 4x-3>0

Mathematics
1 answer:
hram777 [196]2 years ago
8 0

(2,2),(3,1),(5,2)

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hope it helps

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Line m is perpendicular to lines l and n. Line n is parallel to line p. All four lines are coplanar. Which of the following stat
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Answer: Answer B

Step-by-step explanation:

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The radius or diameter is given. Find the missing measures to the nearest hundredth.
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Answer:

For any circle of radius r

The diameter of the circle = two times of the radius = 2r

And The Circumference= C = 2πr

14. If r = 8

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15. If d = 9 m

So, d = 2r

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Using Cramer's rule to solve linear systems.
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Answer: Last Option

x=2,\ y=-5

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Cramer's rule says that given a system of equations of two variables x and y then:

x =\frac{Det(A_X)}{Det(A)}

y =\frac{Det(A_Y)}{Det(A)}

For this problem we know that:

Det(A) = |A|=\left|\begin{array}{ccc}4&-6\\8&-2\\\end{array}\right|

Solving we have:

|A|= 4*(-2) -(-6)*8\\\\|A|=40

Det(A_X) = |A_X|=\left|\begin{array}{ccc}38&-6\\26&-2\\\end{array}\right|

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Solving we have:

|A_Y|=4*(26) - (38)*8\\\\|A_Y|=-200

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x =\frac{|A_X|}{|A|} = \frac{80}{40}\\\\x=2

y =\frac{|A_Y|}{|A|} = \frac{-200}{40}\\\\y=-5

4 0
3 years ago
A $4,000.00 principal earns 5% interest, compounded annually. After 4 years, what is the balance in the account?
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Third question:
after first year tractor's value will be 0.86*15450. After 3 years its value will be:
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Temperature needs to fall by 3 degrees

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