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Alenkasestr [34]
3 years ago
15

Nick wants to write

Mathematics
2 answers:
olchik [2.2K]3 years ago
5 0

Answer:

Nick needs to buy 3 packs.

Step-by-step explanation:

If Nick buys 3 packs he will have 18 cards. If he uses 15 of them he will have 3 left over. If he only bought 2 packs he would be 3 cards short of the amount he really needed.

marshall27 [118]3 years ago
3 0

Answer:

Nick needs to buy 3 packs because if he buys 2 packs he'll have 12 cards which won't be enough. He will have an extra 3 cards remaining.

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What is 2/5 x 1/4 Then Simplified Expression?
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Answer:

2/20 = 0.1

Step-by-step explanation:

  1. 2/5 × 1/4
  2. 2×1/5×4
  3. 2/20

6 0
3 years ago
Shelley bought 14 avocados for $17.92. Each avocado cost the same amount. How much money did Shelley spend for each avocado? A.
zzz [600]
The answer is A, $1.28 You can find this by taking the total amount Shelley spent and dividing it by the total number of avocados she bought.
7 0
4 years ago
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Alabama Instruments Company has set up a production line to manufacture a new calculator. The rate of production of these calcul
kondaur [170]

Answer:

Calculators from the beginning of the third week to the end of the fourth week = 4048.

Step-by-step explanation:

We know that the rate of production of these calculators after t weeks is given by

\frac{dx}{dt} =5000(1-\frac{100}{(t+10)^{2}})

To find the number of calculators that have been produced in a period, we need to take the integral of the function above; the desired time is t=2 (beginning of third week) to t=4 (end of the fourth week). Therefore, the number of calculators produced in the given time is

\int\limits^4_2 {\frac{dx}{dt} } \, dt = \int\limits^4_2 {5000(1-\frac{100}{(t+10)^{2} }) } \, dt

Substitute t+10=u and dt=du, observe that the limits of integration will change

\int\limits^4_2 {\frac{dx}{dt} } \, dt => \int\limits^{14}_{12} {\frac{du}{dt} } \, dt

5000\int\limits^{14}_{12} { 1-\frac{100}{u^{2} } } \, du

5000(u+100u^{-1})\left \{ {{14} \atop {12}}\right.\\5000(2+\frac{100}{14}-\frac{100}{12} )\\4047.62 ≈ 4048

4 0
3 years ago
How many solutions does 9x+3=9x+5 have?​
lilavasa [31]

Answer: No Solution

Step-by-step explanation: The Answer Is No Solution.

Have A Great Day!

3 0
4 years ago
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Here are summary statistics for randomly selected weights of newborn​ girls: n=185​,
Anna11 [10]

Answer:

The confidence  interval for the population mean μ​ is 32.487

Step-by-step explanation:

Given :

Number of weights of newborn​ girls n=185.

Mean \bar{x}=31.4 hg

Standard deviation s=7.5 hg

Use a 95​% confidence level i.e. cl=0.95

To find : What is the confidence interval for the population mean μ​?

Solution :

Using t-distribution,

The degree of freedom DF=n-1=185-1=184

\alpha=\frac{1-0.95}{2}

\alpha=0.025

The t critical value is t=1.973.

The confidence interval build is

CI=\bar{x}\pm(t\cdot \frac{s}{\sqrt{n}})

Substitute the values,

CI=31.4\pm(1.973\cdot \frac{7.5}{\sqrt{185}})

CI=31.4\pm(1.973\cdot 0.5514)

CI=31.4\pm(1.087)

31.4+1.087

32.487

Therefore, the confidence  interval for the population mean μ​ is 32.487

6 0
3 years ago
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