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S_A_V [24]
2 years ago
15

Which is the simplified form of the expression

Mathematics
1 answer:
IrinaVladis [17]2 years ago
4 0
\dfrac{(6^{-4})^{-9}}{6^6}=\dfrac{6^{(-4)(-9)}}{6^6}=\dfrac{6^{36}}{6^6}=6^{36-6}=6^{30}\\\\\text{Used:}\\\\(a^n)^m=a^{n\cdot m}\\\\\dfrac{a^n}{a^m}=a^{n-m}
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How to solve for axis of symmetry for y=(x+2)(x-4)
lianna [129]

Answer:

x = 1

Step-by-step explanation:

you can first find the two zeroes

that would be

x + 2 = 0

x - 4 = 0

x = {-2, 4}

then you average them

-2 + 4 = 2

2 / 2 = 1

the aos is 1

5 0
2 years ago
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1. Write an expression for 8 less than 2<br> times a number.
Nuetrik [128]

Answer:

8<2x

Step-by-step explanation:

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The choir teacher is arranging the Junior and Senior choir members in equal rows for an upcoming concert. Each row will contain
ANTONII [103]

The answer is 9

both 81 and 63 are dividable by 9, and nothing higher

7 0
3 years ago
some psychologists believe that a genius should be defined as anyone having an IQ over 140. If IQ scores are normally distribute
denis23 [38]

Answer:

61,239,550

Step-by-step explanation:

We let the random variable X denote the IQ scores. This would imply that X is normal with a mean of 100 and standard deviation of 17. We proceed to determine the probability that an individual chosen at random from the population would be a genius, that is;

Pr( X>140)

The next step is to evaluate the z-score associated with the IQ score of 140 by standardizing the random variable X;

Pr(X>140)=Pr(Z>\frac{140-100}{17})=Pr(Z>2.3529)

The area to the right of 2.3529 will be the required probability. This area from the standard normal tables is 0.009314

From a population of 6,575,000,000 the number of geniuses would be;

6,575,000,000*0.009314 = 61,239,550

6 0
3 years ago
Read 2 more answers
PLEASE HELP asap it’s for a quiz if you know at least one answer please tell me
VARVARA [1.3K]
  1. 15
  2. about 94.25
  3. about 706.86

Lmk if you want to know how I got the answers

3 0
2 years ago
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