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lara31 [8.8K]
3 years ago
6

Karen wants to measure the height of the streetlight outside her house. She places a mirror on the ground 52

Mathematics
1 answer:
Mariana [72]3 years ago
5 0
Yeiehebei web e ddhsiwbw e did e
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A linear model of this situation contains the values (15, 300.2) and (26, 177.88) where x represents the number of square inches
maw [93]

Answer: Paula starts with 301.5 yarns.

Step-by-step explanation:

Equation of a line passing through two points (a,b) and (c,d) is given by:-

(y-b)=\dfrac{b-d}{a-c}(x-a)

Given: x=  number of square inches knitted on the scarf

y= number of yarns remaining on the ball of yarn

The equation of a line passing through (15, 300.2) and (26, 177.88):

(y-300.2)=\dfrac{26-15}{177.88-300.2}(x-15)\\\\\Rightarrow (y-300.2)=\dfrac{11}{-122.32}(x-15)\\\\\Rightarrow (y-300.2)=\dfrac{11}{-122.32}(x-15)

To find initial point, put x=0

y-300.2=-\dfrac{11}{122.32}(0-15)\\\\\Rightarrow\ y-300.2=\dfrac{375}{278}\\\\\Rightarrow\ y=\dfrac{375}{278}+300.2\\\\\Rightatrrow\ y=301.5  \ \ (approx)

Hence, Paula starts with 301.5 yarns.

5 0
3 years ago
Divide and simplify. − 8 15 ÷ − 3 5 A) − 3 25 B) − 4 5 C) 13 15 D) 8 9 <br> A 100 points
lubasha [3.4K]

Step-by-step explanation:

- will be cancel

then

815/35= 23.28

6 0
2 years ago
Ling wants to determine the average distance she travels each day in her car. She records the odometer reading, which measures t
erica [24]

Answer:

Mean = 10724.29\ mi

Step-by-step explanation:

Given

n = 7 --- days

See attachment for odometer readings

Required

The mean of the distance

Mean is calculated as:

Mean = \frac{\sum x}{n}

So, we have:

Mean = \frac{10150 + 10211 + 10424 + 10769 + 10884 + 11155 + 11477}{7}

Mean = \frac{75070}{7}

Mean = 10724.2857143

Approximate

Mean = 10724.29\ mi

5 0
2 years ago
Joy bought 288 small pieces of candy to share with her friends. She divided the candy into 18 bags. One of the bags will be shar
mariarad [96]

Answer:

32

Step-by-step explanation:

You must divide 288 by 18 and then double the answer you get.

7 0
3 years ago
A wheel turns through 90 revolutions per minute how many degrees does it turn through in 1 second
suter [353]

Answer:

540°

Step-by-step explanation:

90 revolutions = 360°×90 = 32400°

32400° in 60 sec or 1 min

so, in 1 sec 32400/60 = 540°

7 0
3 years ago
Read 2 more answers
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