3 years ago

Simplify the following expression: 3b+5-9b-9+6b

Mathematics

2 answers:

galina1969 [7]3 years ago

4 0

Answer:

3(3+2b)

2b +9

Step-by-step explanation:

defon3 years ago

3 0

Answer:

Step-by-step explanation:

3b+5-9b-9+6b

=3b+6b-9b+5-9=-4

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Find the two correct values of x in the equation 3x² = y when y = 75.

valentina_108 [34]

Answer:

5 and -5

Step-by-step explanation:

3x² = 75

x² = 75/3

x² = √25

x = 5 and - 5

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2 years ago

Line N passes through the points (–1, 4) and (–1, –4).Which is true of line N? Line N is a vertical line with an undefined slope

Marrrta [24]

Answer:

Line N is a vertical line with an undefined slope.

Step-by-step explanation:

When the points that line N passes through are graphed, they form a vertical line.

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We can also check if it's undefined by finding the slope.

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3 years ago

27^x = 9^x − 4 Question 1 options: x = 8 x = 4 x = −4 x = −8

Mariulka [41]

Answer:

x = -8

Step-by-step explanation:

Given the equation:

$27^x=9^{x-4}$

Note that

$27=3^3\\ \\9=3^2,$

then

$27^x=(3^3)^x=3^{3x}\\ \\9^{x-4}=(3^2)^{x-4}=3^{2(x-4)}$

Rewrite the equation as

$3^{3x}=3^{2(x-4)},$

then

$3x=2(x-4)\\ \\3x=2x-8\\ \\3x-2x=-8\\ \\x=-8$

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3 years ago

I’ve been stuck on this for a min now

dedylja [7]

Answer:

3/14

Step-by-step explanation:

1st subtract the y's

the subtract the x's in the same order

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put the first result over the second

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3 years ago

2x + 8 = 2(x + 4) help pls

Fynjy0 [20]

2x +8=2x+8
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0x=0
So the answer is 0

7 0

3 years ago

Read 2 more answers