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wolverine [178]

2 years ago

9

In Whitehorse, the high temperature for the day was 7°C, and in Yellowknife the high for the same day was -8°C. What was the dif

ference in high temperature between the two cities?

1 answer:

Lesechka [4]2 years ago

6 0

The difference between the two cities are that each temp is different their 14c away because their is a minus on the eight

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A store asked 250 of its customers whether they were satisfied with the service or not. The responses were also classified accor

lara [203]

Answer:

e

Step-by-step explanation:

<u><em>I think your full question is below: </em></u>

<em>A store asked 250 of its customers whether they were satisfied with the service or not. The responses were also classified according to the gender of the customers. We want to study whether there is a relationship between satisfaction and gender. </em>

<em>A meaningful display of the data from this study would be: </em>

<em>(a) side-by-side boxplots </em>

<em>(b) a pie chart </em>

<em>(c) a histogram </em>

<em>(d) a scatterplot </em>

<em>(e) a two-way table</em>

Explain: two-way frequency table will deal with two variables, between two sets of categorical data. With genders we have two types: man and female, so two - way table are the best option to display your data.

5 0

3 years ago

The sum of the squares of two consecutive positive integers is 41. Find the two

Komok [63]

We have to present the number 41 as the sum of two squares of consecutive positive integers.

1² = 1

2² = 4

3² = 9

4² = 16

5² = 25

16 + 25 = 41

<h3>Answer: 4 and 5</h3>

Other method:

n, n + 1 - two consecutive positive integers

The equation:

n² + (n + 1)² = 41 <em>use (a + b)² = a² + 2ab + b²</em>

n² + n² + 2(n)(1) + 1² = 41

2n² + 2n + 1 = 41 <em>subtract 41 from both sides</em>

2n² + 2n - 40 = 0 <em>divide both sides by 2</em>

n² + n - 20 = 0

n² + 5n - 4n - 20= 0

n(n + 5) - 4(n + 5) = 0

(n + 5)(n - 4) = 0 ↔ n + 5 = 0 ∨ n - 4 =0

n = -5 < 0 ∨ n = 4 >0

n = 4

n + 1 = 4 + 1 = 5

<h3>Answer: 4 and 5.</h3>

7 0

2 years ago

A bag of backed chips advertises that it now has 1/4 fewer calories than the old recipe.What is the percent of calories were rem

Mrrafil [7]

Answer:

25%

1/4 * 25 = 25/100

25/100=25%

7 0

3 years ago

If sin x=2/9,x, in quadrant i, then find(without findingx): sin(2x), cos(2x), tan(2x)

Sergio039 [100]

We have that
<span>sin x=2/9

we know that
sin</span>² x+cos² x=1---------> cos² x=1-sin² x-----> cos² x=1-(2/9)²
cos² x=1-(4/81)------> (81-4)/81-----> 77/81
cos x=√(77/81)

Sin 2x = 2 sin x cos x-------> 2*(2/9)*(√(77/81))----> (4/81)*√77---> 0.43

Sin 2x=0.43
so
cos² 2x=1-sin² 2x---------> 1-[0.43]²-----> 1-[0.1878]----> 0.81
cos² 2x=0.81-----------> cos 2x=0.9

tan 2x=sin 2x/cos 2x--------> tan 2x=0.43/0.9---------> tan 2x=0.48

the answers are
sin 2x=0.43
cos 2x=0.9
tan 2x=0.48

8 0

3 years ago

rodney bought a 25pound bag of dog food his dog eat 10and2/5poundsof foodinthe firstmounthand104/5poundsof the foodin the second

MakcuM [25]

Answer:

3⅘ lb

Step-by-step explanation:

(a) <em>Amount eaten</em>

Eaten = 10⅖ + 10⅘

Think of pounds as pies. Each pie has 5 slices.

10⅖ pies = 10 pies + 2 slices = 50 slices + 2 slices = 52 slices

10⅘ pies = 10 pies + 2 slices = 50 slices + 4 slices = 54 slices

Eaten = 52 slices + 54 slices = 106 slices

(b) <em>Amount remaining</em>

Remaining = Original – Eaten

Original = 25 pies = 125 slices

Eaten = 106 slices

Remaining = 125 slices -106 slices

Remaining = 19 slices Convert slices to pies

Remaining = 15 slices + 4 slices

Remaining = 3 pies + 4 slices Convert to mixed fraction

Remaining = 3⅘ pies Convert pies to pounds

Remaining dog food = 3⅘ lb

8 0

2 years ago

Read 2 more answers