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djyliett [7]
3 years ago
5

For a school fundraiser, Cody needs to sell 41 boxes of cookies. So far, he has sold 11 boxes of lemon cookies to his aunt, 11 b

oxes of chocolate cookies to his mother, and 10 boxes of oatmeal cookies to a neighbor. How many more boxes of cookies does Cody need to sell?
Mathematics
1 answer:
Igoryamba3 years ago
8 0
Cody needs to sell 9 more boxes. 

In order to find this answer, we start with the total number he needs to sell, then we subtract every box he sells. 

Starting - aunt - mom - neighbor = total needed
41 - 11 - 11 - 10 = total needed
30 - 11 - 10 = total needed
19 - 10 = total needed
9 = total needed
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7. Phozia has three pieces of rope with lengths of 160 cm, 192 cm and
lianna [129]

Answer:

a) 16 cm, b) 37 pieces

Step-by-step explanation:

Part a

Finding the largest divisor of 160, 192 and 240

160 divisors: 1, 2, 4, 5, 8, 10, 16, 32, 40, 80 and 160.

// You can alternatively find them by factor pairs, which are (1, 160), (2, 80), (4, 40), (5, 32), (8, 20) & (10, 16). This way is much more faster. Also, you can simply search them in metanumbers.com

192 divisors: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96 and 192

240 divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120 and 240

The largest divider that they all have in common is 16.

So 16 cm is the largest possible length of each of the shorter pieces of

rope

Part b

Now we have to count how many 16 cm pieces of rope can we get from the large rope pieces, which lengths are 160 cm, 192 cm and 240 cm

160/16 + 192/16 + 240/16 = 10 + 12 + 15 = 37

The answer is 37 pieces

3 0
3 years ago
A student in Greece discovers a pottery bowl
finlep [7]

Answer:

The age of the pottery bowl to the nearest year is 15606 years.

Step-by-step explanation:

Let the initial amount of C-14 in the bowl i.e. N_{0} = 100 and today (say after t years) the amount of C-14 in the bowl i.e. N = 21.

Therefore, from the given equation we can write  

21 = 100 e^{- 0.0001t} {Since, k is give to be 0.0001}

⇒ 0.21 = e^{- 0.0001t}

Now, taking ln on both sides we get

ln 0.21 = - 0.0001t (ln e) {Since, \ln a^{b} = b \ln a}

⇒ - 1.560647 = - 0.0001t  {We have ln e = 1}

⇒ t = 15606.47 years ≈ 15606 years  

Therefore, the age of the pottery bowl to the nearest year is 15606 years.(Answer)

3 0
3 years ago
Both before and after a recent earthquake, surveys were conducted asking voters which of the three candidates they planned on vo
andre [41]

Answer:

0.05547

Step-by-step explanation:

Given :

_____Peter __ Alan __ Sui__total

Before 1838 __ 418 ___1475 _3731

After _ 1420 __ 329 ___1140_2889

Total _3258 __ 747 __ 2615 _6620

The expected frequency = (Row total * column total) / N

N = grand total = 6620

Using calculator :

Expected values are :

1836.19 __ 421.006 __ 1473.8

1421.81 ___325.994__ 1141.2

χ² = Σ(Observed - Expected)² / Expected

χ² = (0.00177817 + 0.0214571 + 0.000974852 + 0.00229642 + 0.0277108 + 0.00125897)

χ² = 0.05547

3 0
3 years ago
Write a mathematical expression for: the sum of twice a number n and 20.
faust18 [17]
I belive is B hope that helped
5 0
3 years ago
Read 2 more answers
Someone help please I wi appreciate itttt so much
Dmitry_Shevchenko [17]

Answer:

65

Step-by-step explanation:

66

3 0
3 years ago
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