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gulaghasi [49]
3 years ago
7

(-4)(5)+(-3)(-2) whats is it???

Mathematics
2 answers:
Vlada [557]3 years ago
5 0

Answer:

-14

Step-by-step explanation:

(-4)(5)+(-3)(-2)

=-20+6

=-14

joja [24]3 years ago
3 0

Answer:

-14

Step-by-step explanation:

Remember to follow PEMDAS. First multiply, then add.

Note:

If you multiply two negative numbers, the answer will be positive.

If you multiply one negative & one positive, the answer will be negative.

If you multiply two positive numbers, the answer will be positive.  

(-4) * (5) = -20

(-3) * (-2) = 6

Add:

-20 + 6 = -14

-14 is your answer.

~

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Find all polar coordinates of point P where P = ordered pair 3 comma negative pi divided by 3 .
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Answer:

The all polar coordinates of P are:

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Step-by-step explanation:

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∵ P = (3 , -π/3)

∵ (r , θ + 2πn)

∴ r = 3 an d Ф = -π/3

- let n = 1

∴ P = (3 , -π/3 + 2π)

∴ P = (3 , 5π/3)

∵ P =(3 , -π/3)

∵ P = (-r , θ + (2n + 1) π)

Let n = 0

∴ P = (-3 , -π/3 + (2×0 + 1) π)

∴ P = (-3 , -π/3 + (0 + 1) π)

∴ P = (-3 , -π/3 + π)

∴ P = (-3 , 2π/3)

∵ P =(3 , -π/3)

∵ P = (-r , θ + (2n + 1) π)

Let n = -1

∴ P = (-3 , -π/3 + (2(-1) + 1) π)

∴ P = (-3 , -π/3 + (-2 + 1) π)

∴ P = (-3 , -π/3 + -π) = (-3 , -4π/3)

∴ P = (-3 , -4π/3)

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