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BigorU [14]
2 years ago
8

The ratio of black pencils to colored pencils in Lauren's backpack is 1:9

Mathematics
1 answer:
Softa [21]2 years ago
8 0

Answer:

I don't really understand the question but...

2:18

3:27

4:36

5:45

6: 54

7:63

8:72

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Select the correct answer.
Radda [10]

Answer:

B

Step-by-step explanation:

In order for something to be a function, they must not have repeating x-values. Looking at the answer choices provided, B is the only answer that does not have repeating x-values.

4 0
3 years ago
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Find the conjugate of -2 + 3i.
Charra [1.4K]

Answer:

- 2 - 3i

Step-by-step explanation:

given a complex number a + bi

then the conjugate is a - bi

The real part a remains unchanged while the sign of the imaginary part is reversed.

the conjugate of - 2 + 3i is - 2 - 3i


4 0
3 years ago
Welppp fastttt!!!!!!!!!!!!!!!!!!
Romashka [77]

Answer: B

Step-by-step explanation:

Grade must be greater than or equal to 88

7 0
3 years ago
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Please help with these 3 questions
Sever21 [200]

Answer: x = 11

Step-by-step explanation:

2x+5 = 3x-6

2x-3x = -6-5

-x = -11

x = 11

Double-check:
11*2= 22                   11*3=33

22+5 = 27                33-6= 27

4 0
2 years ago
A water balloon slingshot launches its projectiles essentially from ground level at a speed of 25.5 m/s . (You can ignore air re
lozanna [386]
A) The longest horizontal distance is reached at 45 degrees angle. This is true for any projectile launch.

B) First, calculate fligth time (using the vertical motion) and then calculate the horizontal movement.

Flight time = 2* ascendent time

ascendent time => final vertical velocity, Vy, = 0

sin(45) = Voy / Vo => Voy = Vosin(45) = 25.5 m/s * (√2) / 2 = 18.03 m/s

Vy = Voy - gt = 0  => Voy = gt = t = Voy / g

Use g = 10 m/s^ (it is an aproximation, because the actual value is about 9.81 m/s^2 depending on the latitud)

t = 18.03 m/s / 10 m/s^2 = 1.83 s

This is the ascendant time going upward.

The flight time is 2*1.83 = 3.66 s

Horizontal motion

Horizontal velocity = Vx = constant = Vox = Vo*cos(45) = 18.03 m/s

Vx = x / t => x = Vx*t

Horizontal distance = xmax = 18.03m/s*3.66 s = 65.99 m

c) The time the ballon will be in the air was calculated in the part B, it is 18.03 s
5 0
3 years ago
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