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garri49 [273]
2 years ago
11

Simplify the expression (4-7i)-(3 + 2i).

Mathematics
1 answer:
zlopas [31]2 years ago
3 0

Answer:

brainliest plsssss

Step-by-step explanation:

4−7i−(3+2i)

=1−9i

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Plz help ASAP plz I will mark brainlest
ololo11 [35]

Answer:

(a) HI

(b) GJ

(c) KL

(d) 2 units

Step-by-step explanation:

For d, I divided 4 by 2 because a radius is half of the diameter

7 0
3 years ago
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I need help really fast
antoniya [11.8K]

well 1+1=2 and 2+2=4 and 4+4=8 and 8+8=16 then..............................................ummm.....................................uhhhhhhhh...........................wow this is hard.......................................................................I have no clue sorry thats all i know

4 0
3 years ago
Is 11,13,17 a right triangle
11Alexandr11 [23.1K]

Answer:

no

Step-by-step explanation:

We can use the Pythagorean theorem to check

a^2 +b^2 = c^2

11^2+13^2 = 17^2

121+169 =289

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3 years ago
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Persons taking a​ 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a
mihalych1998 [28]

Answer:

y = 4.125x + 496.25

Step-by-step explanation:

Set the data up as points. Then deal with the points.

Givens

(30,620)

(70,785)

y2 = 785

y1 = 620

x2 = 70

x1 = 30

Formula

Slope = (y2 - y1) / (x2 - x1)

Solution

Slope = (785 - 620)/(70 - 30)

Slope = 165 / 40

Slope = 4.125

===================

Now you need the y intercept. Either one of the two given points will give you that.

y = 620

x = 30

m = 4.125

y = mx + b

620 = 4.125*30 + b

620 = 123.75 + b

620 - 123.75 + b

b = 496.25

5 0
3 years ago
The number of boys in a school is 2000 less than the number of girls .Then find the number of girls in the school,if the total n
melamori03 [73]

Answer:

8000 girls

Step-by-step explanation:

3 0
3 years ago
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