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Archy [21]
3 years ago
5

-4x - 5 = -6x - 21 answer this pls

Mathematics
2 answers:
DENIUS [597]3 years ago
4 0
-4x -5 = -6x -21
+5 +5
-4x = -6x -16
+6x +6x
2x = -16
__ ——
2 2
x = -8
strojnjashka [21]3 years ago
3 0

Answer:

x = -1.6

Step-by-step explanation:

To find the value of x

4x - 5 = -6x - 21

Transpose

4x + 6x = -21 + 5

10x = -16

x = -16/10

x = -1.6

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Suppose that Frida selects a ball by first picking one of two boxes at random and then selecting a ball from this box at random.
BaLLatris [955]

Answer:

3/4

Step-by-step explanation:

Given the following :

Number of boxes = 2

First box :

White balls = 3

Blue balls = 2

Second box:

White balls = 4

Blue balls = 1

What is the probability that Frida picked a ball from the first box if she has selected a blue ball?

Probability (P) = (required outcome / Total possible outcomes)

Probability of picking first box : P(F) = 1/2

Probability of not picking second box :P(S) 1/2

Probability of picking blue from first box : P(B | F) = 3/5

Probability of picking blue, but not from first box : P(Blue not from second box) P(B|S) = 1/5

probability that Frida picked a ball from the first box if she has selected a blue ball?

P(F) * P(B|F) ÷ (P(F) * P(B|F)) + (P(S) * P(B|S))

(1/2 * 3/5) ÷ ((1/2 *3/5) + (1/2 * 1/5)

3/10 ÷ (3/10 + 1/10)

3/10 ÷ 4/10

3/10 * 10/4

= 3/4

7 0
3 years ago
How much fabric is required to cover x buttons in the shape of a circle whose radius is 3x ?
Leviafan [203]

Radius of 1 button = r = 3x

Fabric required to cover 1 button = Area of the circle

= \pi r^{2}

= \pi (3x)^{2}

= 9\pi x^{2}

Total number of buttons = x

Fabric required to cover 1 button = 9\pi x^{2}  

Fabric required to cover x buttons = x(9\pi x^{2} )

=9\pi x^{3}

Hence, fabric required to cover x buttons =9\pi x^{3}  sq. units


3 0
4 years ago
Suppose a triangle has sides a,b,and c and that a^2 + b^2
bagirrra123 [75]

Answer:

a^2+b^2=c^2

Step-by-step explanation:

a, b, c each represent a side. Lets say a triangle has a=2 and b=4.

  1. a^2= 2^2= 2*2= 4 do the same with B.

b^2= 4^2= 4*4= 16

    2. a^2+ b^2= 4+16= 20= c^2

<u><em>Get it?</em></u>

8 0
4 years ago
Need help with this will give more points if you want
Free_Kalibri [48]
The rectangle on the left is smaller then the right one. I know this because the dimensions of each side are less than then the triangle on the right.
6 0
3 years ago
What is 3 divided by 4/5
Veseljchak [2.6K]
The answer is 3.75 or 3 3/4
3 0
3 years ago
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