1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IceJOKER [234]
3 years ago
11

Abraham has visited country somebody he has a cold or visiting at least 50 countries he plans to choose a school by visiting fiv

e new countries per year (Y) for the next several years which inequality and solution shows the amount of years they will take for Abraham to meet his goal
Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
3 0

<em>Question:</em>

<em>Abraham has visited at least 50 countries; he plans to visit five new countries per year (Y) for the next several years. Which inequality and solution shows the amount of years they will take for Abraham to meet his goal.</em>

Answer:

Countries \geq 50 + 5y

y \leq 29

Step-by-step explanation:

Given

Countries = 50 ------ at least

Yearly =5

Required

Represent as an inequality

"at least" means \geq

So the countries he has visited can be represented as thus;

Countries \geq 50

If

1 year = 5 countries

y years would be 5y countries

So, in y years; he'd have visited

Countries \geq 50 + 5y

To determine the value of y.

We have that

Countries = 195 <em>in the world</em>

<em>Substitute 195 for Countries</em>

195 \geq 50 + 5y

<em>Collect Like Terms</em>

195 - 50 \geq 5y

145 \geq 5y

<em>Divide through by 5</em>

145/5 \geq y

29 \geq y

<em>Reorder</em>

y \leq 29

This means that; he'll visit all countries in at most 29 years' time

You might be interested in
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and
balu736 [363]

Answer:

(a) The sample size required is 43.

(b) The sample size required is 62.

Step-by-step explanation:

The (1 - α) % confidence interval for population mean is:

 CI=\bar x\pm z_{\alpha/2}\ \frac{\sigma}{\sqrt{n}}

The margin of error for this interval is:

 MOE=z_{\alpha/2}\ \frac{\sigma}{\sqrt{n}}

(a)

The information provided is:

<em>σ</em> = 4 minutes

MOE = 72 seconds = 1.2 minutes

Confidence level = 95%

α = 5%

Compute the critical value of z for α = 5% as follows:

 z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

*Use a z-table.

Compute the sample size required as follows:

 MOE=z_{\alpha/2}\ \frac{\sigma}{\sqrt{n}}

       n=[\frac{z_{\alpha/2}\times \sigma}{MOE} ]^{2}

          =[\frac{1.96\times 4}{1.2}]^{2}\\\\=42.684\\\\\approx 43

Thus, the sample size required is 43.

(b)

The information provided is:

<em>σ</em> = 4 minutes

MOE = 1 minute

Confidence level = 95%

α = 5%

Compute the critical value of z for α = 5% as follows:

 z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

*Use a z-table.

Compute the sample size required as follows:

 MOE=z_{\alpha/2}\ \frac{\sigma}{\sqrt{n}}

       n=[\frac{z_{\alpha/2}\times \sigma}{MOE} ]^{2}

          =[\frac{1.96\times 4}{1}]^{2}\\\\=61.4656\\\\\approx 62

Thus, the sample size required is 62.

3 0
3 years ago
If you know the rest of the answers pls help me
netineya [11]

Answer:

.45 times 6= 2.7

29 times 8 =232

.62 times 19 = 11.78

8.7 times 12=104.4

11.9 times 4 = 47.6

Step-by-step explanation:

3 0
2 years ago
Write 100 times 100 as multiplying 10 to a power by 10 to a power.
Bess [88]

Answer:

the answer is 10,000^10

Step-by-step explanation:

5 0
3 years ago
Please HELP!! find the area of the rhombus.
balandron [24]

Answer:

32.5

Step-by-step explanation:

3 0
3 years ago
a group a friends share 3 1/2 slices of cake. each friend get half a slice of cake. how many friends shared the slices of cake.
Serggg [28]

Answer:

7

Step-by-step explanation:

3×2

6+1

7

You multiple it by 2 since it is 1/2 and not a whole piece

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is greater 16.5 or 16.52
    6·2 answers
  • Solve. 3/4 + 4/4 = ?/?
    8·1 answer
  • Wood is sometimes sold in planks that are 2 inches high, 4 inches wide, and 6 feet long.
    11·2 answers
  • Two angles measures of a triangle are 47 and 86, what is the measure of the third angle
    9·1 answer
  • Help fast please. :)
    15·1 answer
  • Please help and give right answers please!
    15·1 answer
  • What is the HCF and LCM of 18,30 and 48​
    6·1 answer
  • Question 1 of 10
    9·1 answer
  • If f(x) = -3x - 5 and g(x) = 4x - 2, find (f - 9(x).
    9·1 answer
  • 27×1/100 please help fast
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!