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Zigmanuir [339]
3 years ago
10

I need help with this please

Mathematics
1 answer:
nikklg [1K]3 years ago
3 0

Step-by-step explanation:

3²×(3³)² × 3^-8

(3³)² = 3⁶

remember that an exponent of an exponent means to multiply the 2 exponents.

3²×3⁶ = 3⁸

remember that when we multiply the same base number with exponents, we add these exponents.

and then 3⁸×3^‐8 = 3⁰ = 1

3²×(2×3)^-3 / (2^-3)

(2×3)^-3 = 2^-3 × 3^-3

remember that an exponent of a product means that that exponent has to be applied to every factor.

so, 2^-3 / 2^-3 = 1

that leaves us with 3²×3^-3

remember that we add the exponents in such a case.

2 + -3 = -1

so, we get 3^-1 = 1/3

remember that a negative exponent just means 1/...

2^-1 × (2×3)⁴ / (2×3)³

this is now easy.

(2×3)⁴ / (2×3)³ = (2×3)¹ = 2×3

and then

2^-1 × 2¹×3¹ = 2⁰×3¹ = 1×3 = 3

2⁵×3⁵×6^-5 = (2×3)⁵ × 6^-5 = 6⁵×6^-5 = 6⁰ = 1

2³×(2×3)^-1 / 2²

2³/2² = 2¹ = 2

2¹×(2×3)^-1 = 2¹×2^-1 × 3^-1 = 2⁰×3^-1 = 1×3^-1 = 3^-1 = 1/3

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Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was
Marizza181 [45]

Answer:

The raw score for his exam grade is 99.69.

Step-by-step explanation:

Given : The professor announced that the mean for the class final exam was 88 with a standard deviation of 7. Given Daniel's z score of 1.67.

To find : What is the raw score for his exam grade?

Solution :

The formula use to find the z-score is

z=\dfrac{x-\mu}{\sigma}

Where, z=1.67 is the z-score

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\sigma=7 is the standard deviation

x  is the raw score for his exam grade

Substitute the values,

1.67=\dfrac{x-88}{7}

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x=88+11.69

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Therefore, the raw score for his exam grade is 99.69.

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3 years ago
A six-sided die is rolled.
insens350 [35]

Answer:

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8 0
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Nico is trying to divide a 6 by 4 inches of rectangular cartoon sheet into pieces of squares. Given that he used up all of the m
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Answer:

Minimum of 6 squares.

Step-by-step explanation:

The dimension of the rectangular carton = 6 by 4 inches.

The area of the carton = length x width

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Assume that we have a square of side length 2 inches, then;

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the minimum number of squares that it can produce = \frac{24}{4}

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Answer:

\sqrt{97}

Step-by-step explanation:

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