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Lisa [10]
3 years ago
5

Tori chang and kai chang sell cookies for Girl Scouts. Over the past 6 months they sold 110 boxes of cookies. Kai sold 4 times a

s many boxes of cookies as tori. How many boxes of cookies did each sell?
Mathematics
2 answers:
Ilya [14]3 years ago
7 0

Answer:

Tori = 22    Kai = 88

Step-by-step explanation:

Take 110 and divide by 5. Tori sold one unit, kai sold 4. Five total. 110/5 is Tori's total. Multiply by 4 to get kai's

scoray [572]3 years ago
4 0

For this case, we propose a system of two equations with two unknowns.

Let:

x: The variable that represents the number of biscuit boxes sold by Tori Chang

y: The variable that represents the number of biscuit boxes sold by Kai Chang

Between the two they sold 110 boxes of cookies:

x + y = 110

If Kai sold 4 times more boxes of cookies than Tori we have:

y = 4x

We substitute the second equation in the first:

x + 4x = 110\\5x = 110\\x = \frac {110} {5}\\x = 22

Then, Tori Chang sold 22 boxes of cookies.

y = 4x\\y = 4 * 22\\y = 88

Kai Chang sold 88 boxes of cookies.

Answer:

Tori Chang: 22 Boxes

Kai Chang: 88 boxes

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Oliga [24]

Answer:

y=7x+4

Step-by-step explanation:

slope- intercept form is y=mx+c

m=7

so y=7x+c

substitute (0,4) into y=7x+c

so 4=(7x0)+c

c=4

so y=7x+4

3 0
3 years ago
The elevation of a city is positive if the city is above sea level and negative if below sea level. The elevation of New Orleans
kaheart [24]

Answer:

Yes

Step-by-step explanation:

5 0
3 years ago
The cost of a car rental is ​$30 per day plus 18c per mile. You are on a daily budget of ​$75. Write and solve an inequality to
Tanzania [10]

Answer:

2. 5 miles

Step-by-step explanation:

Given that:

Rental cost = $30

Cost per mile driven = 18 cent

Daily budget = $75

Greatest distance you can drive each day while staying within budget :

Rental cost + (cost per mile driven * distance) ≤ daily budget

$30 + 18d ≤ $75

18d ≤ 75 - 30

18d ≤ 45

d ≤ 45 / 18

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Greatest distance you can drive each day while staying within budget is 2.5 miles.

8 0
3 years ago
The following data pairs represent the average temperature x (in degrees Fahrenheit) and electricity
elena55 [62]

Answer:

<u>The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.</u>

Step-by-step explanation:

Using Excel, we captured the data provided for the 12 different homes for calculating the correlation coefficient manually, this way:

n = 12

∑x = 904

∑y = 2,169

∑xy = 167,532

∑x² = 69,552

∑y² = 404,615

r =  [n *∑xy  - (∑x * ∑y)]/[√(n * ∑x² - (∑x)²) * (n * ∑y²  - (∑y)²)]

Replacing with the real values, we have:

r = [12 * 167,532  - (904 * 2,169)]/[√(12 * 69,552 - 904²) * (12 * 404,615  - 2,169²)]

r = [2'010,384  -1'960,776]/[√(834,624 - 817,216) * (4'855,380  - 4'704,561]

r = 49,608/√17,408 * 150,819

r = 49,608/ 51'239.215

r = 0.00097

<u>The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.</u>

4 0
2 years ago
Read 2 more answers
The first side of a triangle is 7cm less than twice the second side. The third side is 4cm longer than the first side. The perim
Vinil7 [7]

Given:

First side(A): 2B - 7

Second side(B): B

Third side(C): B + 4

Plug in values:

A + B + C = 80

2B - 7 + B + B + 4 = 80

If you look at the coefficients only, you can rewrite the equation like this:

2B + B + B - 7 + 4 = 80

This means that 4B - 7 + 4 = 80

=4B - 3 = 80

= 4B = 80 + 3

B = 83/4, so you can either write B as 83/4 or as 20.75.

Checking your work:

A: 2(20.75) - 7 = 34.5

B: 20.75

C: 4 + 20.75 = 24.75

34.5 + 20.75 + 24.75 = 80cm.

Hope this helped.

3 0
3 years ago
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