3 years ago

What is the factorization of 49b^ 2 -81 ?

Mathematics

1 answer:

Rainbow [258]3 years ago

5 0

Answer:

(7b -9)(7b +9)

Step-by-step explanation:

Each term is a perfect square, so the expression is the difference of squares. In general, that factors as ...

p^2 - q^2 = (p -q)(p +q)

Here, you have p^2 = 49b^2, so p = 7b; and q^2 = 81, so q = 9. Then the factoring is ...

(7b -9)(7b +9)

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MrRa [10]

Okay, So you have 24x+25=6y+7

Step 1: Pull out like factors : 24x + 18 + 6y = 6 • (4x + y + 3)

Step 2: 4x+y+3 = 0

y-intercept = -3/1 = -3.00000

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Slope = -8.000/2.000 = -4.000

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4 years ago

What is the value of b? 13.17 - b = 8.76

nydimaria [60]

Answer:

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Explanation:

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Read 2 more answers

What is the result of subtracting the second equation from the first? \begin{aligned} -7x-y &= 0 \\\\ 7x+8y &= -6 \end{a

Kitty [74]

Answer:

$-14x-9y=6$

Step-by-step explanation:

We are given with two equations

first equation is $-7x-y=0$

second equation is

$7x+8y=-6$

we find the result of subtracting two equation

subtract the second equation from the first, so

first equation - second equation, multiply second equation by -1 and then add it with first equation

$-7x-y=0$

$-7x-8y=+6$

Now add both equations, we get

$-14x-9y=6$

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3 years ago

The ratio of the measures of the angles of a triangle is 2:3:10. What is the measure of the smallest angle?

cricket20 [7]

Answer w2

Step-by-step explanation:

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3 years ago

Write the slope-intercept form of the equation that passes through the point (1,5) and is perpendicular to the line y =-x + 3

Diano4ka-milaya [45]

Answer:

y = -1/7x - 23/7

Step-by-step explanation:

Step 1: Find slope m

m = (-4 + 3)/(5 + 2)

m = -1/7

y = -1/7x + b

Step 2: Find b

-3 = -1/7(-2) + b

-3 = 2/7 + b

b = -23/7

Step 3: Rewrite equation

y = -1/7x - 23/7

4 0

4 years ago