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weqwewe [10]
4 years ago
15

Log4 x + log4(x-12)= 3

Mathematics
1 answer:
stellarik [79]4 years ago
6 0
             <span> log4(x+12)+log4x=3
log4(x(x+12))=3
log4(x^2+12x)=3
4^3=x^2+12x
64=x^2+12x
x^2+12x-64=0
(x+16)(x-4)=0
x=4 </span>
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Need some help please would really be greatful
Gnesinka [82]

Answer:

x = 100°

Step-by-step explanation:

Actually the drawing is very inaccurate, so it is a regular pentagon, otherwise x would be 60° and none of the answers would fit.

The formula for finding the sum of all angles in a polygon is:

(n-2) * 180°

n is the number of sides

Here n = 5, so the sum of all angles is (5-2) * 180° = 540°

x + 2x + 86 + 92 + 62 = 540

3x = 300

x = 100

6 0
3 years ago
Which equation is the inverse of y = 100-x²?
Iteru [2.4K]

Answer:

To find the inverse equation, switch the x and y variables then solve for y.

Original equation: .

y = 100 - x²

Inverse:

x = 100 - y²

y² = 100 - x

y = + √(100 - x) or the first option

Step-by-step explanation:

4 0
2 years ago
4 times the sum of 14 and 26​
soldi70 [24.7K]
160
14+26= 40
4*40=160
7 0
3 years ago
A car insurance company has determined that 9% of all drivers were involved in a car accident last year. Among the 10 drivers li
____ [38]

Answer:

The correct answer: 0.05404

Step-by-step explanation:

Given:

Binomial distribution = x

n = 10

and p = 0.09

solution:

P(X=x) =1 0Cx*(0.09^x)*((1-0.09)^(10-x)) for x=0,1,2,...,10

So the probability is calculated by the Formula:

P(X>=3) = 1-P(X=0)-P(X=1)-P(X=2)

putting the given values in the formula

= 1-10C0*(0.09^0)*((1-0.09)^(10-0))-...-10C2*(0.09^2)*((1-0.09)^(10-2))

= 0.0540400

Thus, the correct answer: 0.05404

5 0
3 years ago
Which graph does NOT represent y as a function of x?​
xxMikexx [17]
A
since it doesn’t pass the vertical line test, which proves if a graph is a function.
8 0
3 years ago
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