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
ch4aika [34]
3 years ago
14

Question: (Graph photo attached)

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
8 0
21,515754×48 >>> 38%+10% =48%
21,515,754×48= 1032756192 estimates to D.
VMariaS [17]3 years ago
5 0

Answer:

The best estimate of the number of Australians with type AB blood in 2010 is 645,473.

Step-by-step explanation:

Total estimate of Australia'a population = 21,515,754

Percentage of population with AB blood group type = 3%

Number of population with AB blood group type be X

3\%=\frac{X}{21,515,754}\times 100

X=\frac{3}{100}\times 21,515,754=645,472.62

645,472.62 ≈ 645,473

The best estimate of the number of Australians with type AB blood in 2010 is 645,473.

You might be interested in
Simplify:<br>3×5-1-(2² +6÷2)​
ivanzaharov [21]

Answer:

7

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
On a Saturday, a library checked out 52 books. If 24 of the books were fiction , what is the ratio if non-fiction books to ficti
vekshin1
I would guess 28 to 24
4 0
3 years ago
Read 2 more answers
The sales of a grocery store had an average of $8,000 per day. The store introduced several advertising campaigns in order to in
oksano4ka [1.4K]

Answer:

Null hypothesis:\mu \leq 8000  

Alternative hypothesis:\mu > 8000  

z=\frac{8300-8000}{\frac{1200}{\sqrt{64}}}=2  

p_v =P(Z>2)=0.0228  

Step-by-step explanation:

1) Data given and notation  

\bar X=8300 represent the sample mean  

\sigma=1200 represent the population standard deviation  

n=64 sample size  

\mu_o =800 represent the value that we want to test  

\alpha represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

2) State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is higher than 8000, the system of hypothesis are :  

Null hypothesis:\mu \leq 8000  

Alternative hypothesis:\mu > 8000  

Since we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

3) Calculate the statistic  

We can replace in formula (1) the info given like this:  

z=\frac{8300-8000}{\frac{1200}{\sqrt{64}}}=2  

4) P-value  

Since is a one-side upper test the p value would given by:  

p_v =P(Z>2)=0.0228  

5) Conclusion  

If we compare the p value and the significance level assumed, for example \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the mean is significantly higher than $8000.  

4 0
3 years ago
Find the value of x. round the length to the nearest tenth
Ronch [10]

Answer:

777.9 meters

Step-by-step explanation:

Notice that the angles of the right triangle are 40 and 50 degrees, with the 500 meter side adjacent to the 50 degree angle. Now, we can set up an equation: cos (50 degrees) = 500 / x. Use a calculator to find that the answer is 777.9.

3 0
4 years ago
Read 2 more answers
Cody's rent is increasing by $51 per month starting next year. That is an increase of 15% from his current monthly rent. Let r r
Inessa05 [86]

Answer:

r = 43.35

Step-by-step explanation:

Given

Current\ Rent = r

Increment = 15\%

New\ Rent = \$51

Required

Determine the value of r

The value of r can be set up percentage increase formula as follows:

\%Increment  = \frac{New\ Rent - Current\ Rent}{Current\ Rent}

Substitute values in the above equation

15\% = \frac{51 - r}{51}

Cross Multiply

51 - r = 15\% * 51

Convert percentage to decimal

51 - r = 0.15 * 51

51 - r = 7.65

And the value of r\ is\ calculated\ using:

r = 51 -7.65

r = 43.35

Hence, Cody's current rent is $43.35 monthly

8 0
3 years ago
Other questions:
  • Why does a skateboard on top of a ramp have potential energy.
    9·1 answer
  • Graph the given relation or equation and find the domain and range. Then determine whether the relation or equation is a functio
    14·1 answer
  • Color all congruent angles the same color,and list all congruent angles below
    7·1 answer
  • Write the equation of the circle with radius 2 and center (2,-3)
    6·1 answer
  • (b) If Jordan is 7 years old, how old is Kim? Show your work. Make sure to write your answer in the form of a sentence.
    13·1 answer
  • The population of a small town is currently 6000. This population grows at roughly 1.6% per year. In how many years will the pop
    6·1 answer
  • CAN SOMEONE HELP ME WITH #1
    7·1 answer
  • A) x²y-2xy+y=? <br>b) ax²+4ax+4a=? <br>c) 20x-60x²+45x³=?​
    11·1 answer
  • Determine the domain and the range of the graph.
    7·1 answer
  • Pls help me <br><img src="https://tex.z-dn.net/?f=49%20%3D%20%20%7Bx%7D%5E%7B2%7D%20" id="TexFormula1" title="49 = {x}^{2} " al
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!