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4 years ago

Worksheet 5.9 scale drawings and scale models

Mathematics

1 answer:

Andreyy894 years ago

8 0

Answers:

1. 1/12

2. 1/15

3. 16 feet

4. 222 inches

5. 27 feet

hope it helps :0

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2+2 is 4 4+4 is 8 What is 8+8

saw5 [17]

Answer:

8+8 is 16.

Step-by-step explanation:

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4 years ago

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AB=9 cm,AC=4 cm,BC=6 cm,and m What is the approximate area of this triangle? PLEASE HELP. THIS IS TIME SENSITIVE!!! WILL MAR

never [62]

Answer:

9.562

Step-by-step explanation:

Use the Heron’s Formula to find the area of a triangle when all three sides are known (SSS). In the formulas below, S represents the semi-perimeter of the triangle, and ABC are the three given sides.

You must first know the semi-perimeter (S) before you are able to calculate the area.

S= 1/2 (A+B+C)

Area = √S(S-A)(S-B)(S-C)

In your case:

semi perimeter

= 1/2 (9+4+6)

= 19/2

= 9.5

Area

= √9.5(9.5−9)(9.5−4)(9.5−6)

= √91.4375

= 9.562

3 0

3 years ago

Please help, i really beg

adelina 88 [10]

Answer:

Undefined

Step-by-step explanation: Because the pints are a line so there isnt a slope unless ther is a shape.

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3 years ago

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What is the value of x? 6 8 10 12

Novosadov [1.4K]

we know that

The sum of exterior angles of any polygon is $360$ degrees

$(62+66+77+59+12x)=360\\( 264+12x)=360\\ 12x=360-264\\12x=96\\x= 8\ degrees$

therefore

the answer is

the value of x is $8\ degrees$

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4 years ago

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Example 1: Calculation of Normal Probabilities Using ????????-Scores and Tables of Standard Normal Areas The U.S. Department of

Molodets [167]

Answer:

i) 0.872

ii) 0.300

iii) 0.76

iv) 0.704

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $261.50 per month

Standard Deviation, σ = $16.25

We are given that the distribution of monthly food cost for a 14- to 18-year-old male is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(Less than $280)

$P( x < 280) = P( z < \displaystyle\frac{280 - 261.50}{16.25}) = P(z< 1.138)$

Calculation the value from standard normal z table, we have,

$P(x < 280) = 0.872 = 87.2\%$

b) P(More than $270)

P(x > 270)

$P( x > 270) = P( z > \displaystyle\frac{270 - 261.50}{16.25}) = P(z > 0.523)$

$= 1 - P(z \leq 0.523)$

Calculation the value from standard normal z table, we have,

$P(x > 270) = 1 - 0.700 = 0.300 = 30.0\%$

c) P(More than $250)

P(x > 250)

$P( x > 250) = P( z > \displaystyle\frac{250 - 261.50}{16.25}) = P(z > -0.707)$

$= 1 - P(z \leq -0.707)$

Calculation the value from standard normal z table, we have,

$P(x > 250) = 1 - 0.240 = 0.76 = 76.0\%$

d) P(Between $240 and $275)

$P(240 \leq x \leq 275) = P(\displaystyle\frac{240 - 261.50}{16.25} \leq z \leq \displaystyle\frac{275-261.50}{16.25}) = P(-1.323 \leq z \leq 0.8307)\\\\= P(z \leq 0.8307) - P(z < -1.323)\\= 0.797 - 0.093 = 0.704 = 70.4\%$

$P(240 \leq x \leq 275) = 70.4\%$

e) Thus, 0.704 is the probability that the monthly food cost for a randomly selected 14- to 18-year-old male is between $240 and $275.

5 0

3 years ago