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torisob [31]
3 years ago
15

What is 160.9-55.23+27.1

Mathematics
2 answers:
dem82 [27]3 years ago
7 0
The answer to your problem is 132.77
PolarNik [594]3 years ago
5 0
132.77 is the answer
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Suppose a 95% confidence interval for a population proportion is (0.30, 0.60). Rewrite this interval in the form of margin of er
VashaNatasha [74]

Answer:

This interval in the form of margin of error is expressed as 0.45 ± 0.15.

p = 0.45

MOE = 0.15

Step-by-step explanation:

A confidence interval is calculated from a sample statistic (in this case, a sample proportion) and substracted or added a margin of error (MOE) for the lower and upper bound respectively.

This can be expressed as:

LL=p-MOE\\\\UL=p+MOE

If we substract the upper bound from the lower bound, we can calculate the margin of error as:

UL-LL=(p+MOE)-(p-MOE)=2\cdot MOE\\\\MOE=\dfrac{UL-LL}{2}=\dfrac{0.60-0.30}{2}=0.15

With this information, we can calculate the sample proportion p:

LL=p-MOE=p-0.15=0.30\\\\p=0.30+0.15=0.45

Then, we can express the confidence interval as:

p\;\pm\;MOE=0.45\pm0.15

5 0
3 years ago
Helga knows that the corresponding angles of two triangles are congruent .She claims that the two triangles must be congruent .I
poizon [28]
The two triangles are congruent because every corresponding side has the same length, & every corresponding angle has the same measure. In short she's correct
8 0
4 years ago
If 2000 dollars is invested in a bank account at an interest rate of 6 percent per year, find the amount in the bank after 7 yea
AfilCa [17]

Answer:

$3007.26

Step-by-step explanation:

Step one:

given data

Principal= $2000

rate= 6%= 0.06

time= 7years

Required:

The final amount A

Step two:

the expression for the compound interest is

A= P(1+r)^t

substituting we have

A= 2000(1+0.06)^7\\\\A= 2000(1.06)^7\\\\A=2000*1.50363\\\\A=3007.26

6 0
3 years ago
What is the minimum point on a graph of f(x) = (x - 1)² - 3?
mariarad [96]

Answer:

(1, -3)

First option

Step-by-step explanation:

The minimum point on the graph is also the <u>vertex</u>.

The quadratic function equation is given in <u>vertex form</u>, which is f(x) = a(x - h)^{2} + k

Using this equation, the vertex is (-h, k).

Whatever number you see for "h", find its opposite negative/positive. That will be the x-coordinate of the vertex. The y-coordinate for the vertex is the same as "k", keeping the negative and positive.

In f(x) = (x - 1)² - 3 using (-h, k) is:

h = -1   =>   -h = 1

k = -3

Therefore the vertex is (1, -3).

8 0
4 years ago
If a wall is 12 feet long and has an area of 84 feet squared what is the height?
Dahasolnce [82]

Answer:

7 feet

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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