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Nina [5.8K]
3 years ago
7

If x = 2a - b^2, then b equals

Mathematics
1 answer:
kvasek [131]3 years ago
7 0
X = 2a - b²
x - 2a = b²
√x-2a = b

Just to clarify, all of x-2a is under the square root.
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Choose the correct rule for the sequence: 2, 4, 8, 16,... *
lina2011 [118]

Answer:

x2

1 x (N x 2)

2 x (1 x 2) = 4

2 x (4 x 2) = 16

Step-by-step explanation:

6 0
3 years ago
What is x equal to?<br><br> 3(x + 5) = 2(3x + 18)
Anna [14]
<span>3(x + 5) = 2(3x + 18)
Use the distributive property:
3(x)+5(3)=2(3x)+18(2)
Simplify:
3x+15=6x+36
6x+36=3x+15
3x+36=15
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x=-7

Check answer:
3(-7+5)=2(-21+18)
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7 0
3 years ago
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Determine if the graph is symmetric about the x-axis, the y-axis, or the origin.<br> r = 9 sin 7θ
boyakko [2]

Answer:

The given function symmetric about the y-axis.

Step-by-step explanation:

The given function is

r=9\sin 7\theta                .... (1)

1. Symmetry about the x-axis: If the point (r, θ ) lies on the graph, then the point  (r,-θ ) or (-r, π - θ ) also lies on the graph.

2. Symmetry about the y-axis: If the point (r, θ ) lies on the graph, then the point (r,π - θ ) or (-r, -θ ) also lies on the graph.

3. Symmetry about the origin: If the point (r, θ ) lies on the graph, then the point (-r, θ ) or (r, π + θ ) also lies on the graph.

Put (r, -θ ) in the given function.

r=9\sin 7(-\theta)=-9\sin 7\theta=-r\neq r

Therefore it is not symmetric about x-axis.

Put (-r, -θ ) in the given function.

-r=9\sin 7(-\theta)=-9\sin 7\theta=-r

Therefore it is symmetric about y-axis.

Put (-r,θ ) in the given function.

-r=9\sin 7(\theta)=r\neq -r

Therefore it is not symmetric about the origin.

3 0
3 years ago
What is the correct way to check the solved equation<br> 4,127÷3=1,375 remainder 2<br>​
Dafna11 [192]

the quickest way to do this would be to multiply 1,375 by 3 and then add 2.

1,375 * 3 = 4,125 + 2 = 4,127

correct!

6 0
3 years ago
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Half note times a whole note plus 2 quarter notes minus 3 half notes
Allisa [31]
B is your answer bc 2 times 4 is 8 plus 2 minus 6 is
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