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2 years ago

Add or subtract as indicated and write the result in standard form. 5i - (-5 - i)

Mathematics

1 answer:

AlexFokin [52]2 years ago

5 0

Simplify by combing the real and imaginary parts of each expression.

5 + 6i

Arrange the expression into the a+bi form of a complex number.

5+ 6i

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Write y+4 = -7 (x-3) in slope intercept form

Evgesh-ka [11]

Answer: y=-7x+17

-Distribute -7(x-3)

-Subtract 4 from both sides

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2 years ago

Hans wanted to find the length of the hypotenuse of the triangle. Which statement correctly identifies his error?

KonstantinChe [14]

Choice 1. He did not square 40, he just multiplied by 2.

Step-by-step explanation:

Step 1:

According to the Pythagorean theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

The hypotenuse measures c cm while the other sides are 40 cm and 9 cm each.

Step 2:

According to the Pythagorean theorem,

$9^{2} +40^{2} = c^{2}.$

$81 + 1600 = c^{2} .$

$1681 = c^{2} .$

$\sqrt{1681} = c.$

This is the correct solution to the given problem. Hans did not square 40, he just multiplied by 2. Which is the first option.

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2 years ago

Equation of a line that goes through point (4,2) and perpendicular to -x+y=1

mojhsa [17]

Answer:

hsgdcsjavebiav2gwjevd

3 0

2 years ago

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Need help with math question

mote1985 [20]

Answer:

(-7,4)

Step-by-step explanation:

goal: (y-k)^2=4p(x-h)

y^2-8y=4x+12 Rearranged and added 4x and 12 on both sides

y^2-8y+(-8/2)^2=4x+12+(-8/2)^2 complete square time (add same thing on both sides)

y^2-8y+(-4)^2=4x+12+(-4)^2 (simplify inside the squares)

(y-4)^2=4x+12+16 (now write the left hand side as a square)

(y-4)^2=4x+28

(y-4)^2=4(x+7) factored...

vertex is (-7,4)

4 0

3 years ago

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How many terms of the A.P:27,23,19,15....have the sum 95?

Assoli18 [71]

Answer:

5th

watch explanation

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2 years ago

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