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3 years ago

PLEASE HELPPPPP MEEEE!!

Mathematics

2 answers:

ANEK [815]3 years ago

5 0

Answer:

1. 2^6 x 2^4= 2^10

2. 5^3 x 5^8= 5^11

3. c^7 x c^2= c^9

4. r^2 x r= r^3

katovenus [111]3 years ago

4 0

Answer: 1. 1,024. 2. 148,828,125. 6. 1. 7. 1.

Step-by-step explanation:

1. 2 x 2 x 2 x 2 x 2 x 2 = 64.

2 x 2 x 2 x 2 = 16.

64 x 16

1,024.

2. 5 x 5 x 5 = 125.

5 x 5 x 5 x 5 x 5 x 5 x 5 x 5 = 390,625.

125 x 390,625

48,828,125.

6. c x c x c x c x c x c x c = 1.

c x c = 1.

1 x 1

7. r x r = 1.

r = 1.

r x r = 1.

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For f(x) = 2x+1 and g(x) = 3x-7, find (f-g)(x)

marissa [1.9K]

Answer:

(f - g)(x) = -x + 8

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 2x + 1

g(x) = 3x - 7

(f - g)(x) = f(x) - g(x)

<u>Step 2: Simplify</u>

Set up: (f - g)(x) = (2x + 1) - (3x - 7)
Distribute -1: (f - g)(x) = 2x + 1 - 3x + 7
Combine like terms: (f - g)(x) = -x + 8

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3 years ago

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a farmer plants 0.4 of a field with wheat. the field is 3.45 acres. how many acres are planted with wheat?

Sonbull [250]

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3 years ago

Obtain the required confidence interval for the difference between two population proportions. Assume that independent simple ra

Thepotemich [5.8K]

Answer:

The 95% confidence interval for the difference between the proportions of women and men who follow a regular exercise program = ( -0.293, 0.023)

Step-by-step explanation:

The formula for confidence interval for the difference between the proportions is given as:

p1 - p2 ± z × √p1 (1 - p1)/n1 + p2(1 - p2)/n2

From the question

We have two groups.

Group 1 = For women

A survey found that 37 of 74 randomly selected women

p1 = x/n1

n1 = 74

x1 = 37

p1 = 37/74

p1 = 0.5

Group 2 = For Men

A survey found out that 47 of 74 randomly selected men follow a regular exercise program

p2 = x/n1

n2= 74

x2 = 47

p2 = 47/74

p2 = 0.6351351351 ≈ 0.635

z = z score for 95% Confidence Interval = 1.96

The confidence interval for the difference between the proportions is given as:

p1 - p2 ± z × √p1 (1 - p1)/n1 + p2(1 - p2)/n2

0.5 - 0.635 ± 1.96 × √0.5 (1 - 0.5)/74 + 0.635(1 - 0.635)/74

-0.135 ± 1.96 × √(0.5 × 0.5)/74 + (0.635× 0.365)/74

-0.135 ± 1.96 × 0.08068750209663572

-0.135 ± 0.158147504109406

Hence:

= -0.135 - 0.158147504109406

= -0.2931475041

Approximately = -0.293

= -0.135 + 0.158147504109406

= 0.0231475041

Approximately = 0.023

Therefore, the 95% confidence interval for the difference between the proportions of women and men who follow a regular exercise program = ( -0.293, 0.023)

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3 years ago

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Dennis_Churaev [7]

Answer:

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Step-by-step explanation:

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This means the equation is $(x--4)^2 + (y-9)^2 = r^2\\\(x+4)^2 + (y-9)^2 = r^2$ .

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4 years ago

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alexandr1967 [171]

Answer:

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Step-by-step explanation:

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