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AfilCa [17]
3 years ago
10

Help me please!!! I reallyyyy need help

Mathematics
1 answer:
Sholpan [36]3 years ago
5 0
3) A linear equation to represent this would be 205 = 10x + b 
x is days passed, which is 10, and b is the original amount. 
10 times 10 is 100, so we now have 205 = 100 + b
Subtract 100 from both sides to get 105 = b, which is the starting amount.
The rate of change is 10, however many cans brought per day.
4) So it appears that for every 5 minutes she frosts 4 cupcakes, which means the rate of change is 4/5 using rise over run. 
Subtract 4 from 28 to get the starting amount 5 minutes earlier. 
The starting amount of frosted cupcakes is 24. 
5) Every 3 months he gets 9 more CDS. So, every month he gets 3 new CDs. 
That means the slope is 3. 
Subtract 9 from 18 to get the starting amount. 
The starting amount of CDs is 9. 

Hope this helps!
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A padlock has a four-digit code that includes digits from 0 to 9, inclusive. What is the probability that the code does not cons
Eduardwww [97]
Since there is no repetition allowed, there are 10 possibilities for the 1st digit, 9 for the 2nd, 8 for the 3rd, and 7 for the 4th. This gives a total of (10)(9)(8)(7) = 5040 four-digit codes.
For all odd digits to be used, there are 5 possibilities for the 1st digit (1,3,5,7,9), 4 for the 2nd, 3 for the 3rd, 2 for the 4th. This gives a total of (5)(4)(3)(2) = 120 codes that only use odd digits.
Therefore there are 5040 - 120 = 4920 codes that do not consist of all odd digits. The probability is 4920/5040 = 41/42.

4 0
3 years ago
Read 2 more answers
X−7&lt;14<br><br> Options:<br><br> x&lt;7<br><br> x&gt;21<br><br> x&lt;21<br><br> x&gt;7
guajiro [1.7K]

This is a simple equation:

x - 7 < 14

x < 14 + 7

x < 21

→ Many people think that because there is not "=" sign they don't flip the sign of what in this case is -7. But actually, the symbols "<" and ">" act as the equal sign. This rule doesn't apply to positive number, only negative.


Hope it helped,


BioTeacher101


(If you have any questions, feel free to ask them in the comments)

6 0
3 years ago
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What is the m∠2 if m∠4 = 81° and m∠3 = 40°?<br> a. 40°<br> b. 59°<br> c. 41° <br> d. 60°
velikii [3]

Answer:

C. 41

Step-by-step explanation:

180 - 81 = 99

99+40 = 139

180 -139 = 41

8 0
3 years ago
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There are 18 girls in mr. Brimley’s math class. If 60% of the students are girls, how many students are in mr. brimley’s math cl
m_a_m_a [10]

Answer:

30

Step-by-step explanation:

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3 years ago
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A sample of 100 independent random numbers is taken from this distribution, and its average is used to estimate the mean of the
Mariulka [41]

Answer:

The standard error in estimating the mean = (0.1 × standard deviation of the distribution)

Step-by-step explanation:

The standard error of the mean, for a sample, σₓ is related to the standard deviation, σ, through the relation

σₓ = σ/(√n)

n = sample size = 100

σₓ = σ/(√100)

σₓ = (σ/10) = 0.1σ

Hence, the standard error in estimating the mean = (0.1 × standard deviation of the distribution)

4 0
3 years ago
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