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Triss [41]
3 years ago
8

Log3 (x squared + 7x + 21) = 2

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
3 0

Step-by-step explanation:

log <base a> b = x

means

a^x = b

So

3^2 = x^2+7x+21

x^2 + 7x + 21 - 9 = 0

x^2 + 7x + 12 = 0

(x+3)(x+4)

x = -3 or -4

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Use the formula: y^2 - y^1 divided by x^2 - x^1.
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Oduvanchick [21]

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3 years ago
The points (4,8) and (6,g) fall on a line with a slope of –5. What is the value of g?
777dan777 [17]
<h3>Answer:  g = -2</h3>

======================================================

Explanation:

We will use the slope formula

m = (y2-y1)/(x2-x1)

Plugging in the given items leads to

-5 = (g-8)/(6-4)

Now solve for g

-5 = (g-8)/(6-4)

-5 = (g-8)/2

-5*2 = g-8

-10 = g-8

-10+8 = g

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g = -2

We have (6,g) turn into (6,-2)

The two points (4,8) and (6,-2) are on a line of slope -5.

-------------------

As a way to check, we'll find the slope of the line through (4,8) and (6,-2)

m = (y2-y1)/(x2-x1)

m = (-2-8)/(6-4)

m = -10/2

m = -5

The answer is confirmed.

6 0
3 years ago
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Nuetrik [128]

Answer:

in a two column proof, each <u>of </u> is in the left and each <u>of</u><u> </u> is on the right !!

4 0
3 years ago
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