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MrRa [10]
2 years ago
8

Which equation is true? 9x2 – 25 = (3x – 5)(3x – 5) 9x2 – 25 = (3x – 5)(3x 5) 9x2 – 25 = –(3x 5)(3x 5) 9x2 – 25 = –(3x 5)(3x – 5

).
Mathematics
1 answer:
dalvyx [7]2 years ago
5 0

Answer:

9x² - 25 = (3x - 5)(3x + 5)

Step-by-step explanation:

(a + b)(a - b) = a² - ab + ab - b² = a² - b²

a² - b² = (a + b)(a - b)

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What’s 2 plus 2 plus four plus eight plus six
Anastaziya [24]

Answer:

22

Step-by-step explanation:

2+2+4+8+6=22

5 0
3 years ago
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What is the average rate of change for f(z) = -2z^2 - 12z -19 over the interval [ -4, -2 ]?
marusya05 [52]

Answer:

Average rate of change = 0

Step-by-step explanation:

f(z) = -2z^2 - 12z - 19

a = -4 and b = -2

[f(b) - f(a)] / (b-a)

[-2(-2)^2 - 12(-2) -19] - [-2(-4)^2-12(-4)-19] / (-2 -(-4))

(-8+24-19) - (-32+48-19) / 2

(-8+24-19+32-48+19) / 2 = 0/2

6 0
3 years ago
Given the point (1, 3) and the slope -2, write the equation for the line in point-slope form
34kurt

Answer:

y - 3 = - 2(x - 1)

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Here m = - 2 and (a, b) = (1, 3) , thus

y - 3 = - 2(x - 1) ← in point- slope form

6 0
3 years ago
It take 4 people 18 days to build 12 computers. If two more people helped, how many days would it probably have taken to build a
GenaCL600 [577]

Answer:

It would have taken 12day for 6person to build 12 computers

Step-by-step explanation:

Since

4person = 18days

1person = 4 x 18 = 72days

Therefore if two more person helped

4person + 2 person = 6person

6person = 72/6 = 12days

It would have taken 12day for 6person to build 12 computers

3 0
3 years ago
Help me please thank you!
Fiesta28 [93]

Answer:

you got the answer right it's 49

6 0
2 years ago
Read 2 more answers
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