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3 years ago

Please help me ASAP!!! Will give Brainliest!! Fairly easy geometry problem!!

Mathematics

2 answers:

Liono4ka [1.6K]3 years ago

7 0

Answer:

4. "The quadrilateral is regular" does NOT guarantee that a quadrilateral is a square.

makkiz [27]3 years ago

7 0

Answer:

D. The quadrilateral is regular.

Step-by-step explanation:

The first three descriptions give us a square.

The last one is not necessarily a square. It could be a trapezoid or kite and doesn't guarantee a square.

You might be interested in

Which equation can be used to represent this information?

bogdanovich [222]

Answer:

r=s+5

Step-by-step explanation:

So, letsgo over what we know:

The regular price is r

The sale price is s

Now lets compare the difference between r and s:

10r = 5s

20r = 15s

30r = 25s

What is the difference between the r and s value in each situration?

Well, from what I can see, r is always 5 more than s.

This can be writen as:

r = s+5\

So this is our equation, for if you plug in any number for s, you will get an accurate r value.

For instance, if you say s is 25:

r=25+5

r=30

This looks just like the 30r=25s in the table above.

So:

r=s+5

Hope this helps! :)

7 0

3 years ago

A screening examination was performed on 250 persons for Factor X, which is found in disease Y. A definitive diagnosis for disea

ZanzabumX [31]

Answer:

The specificity of this test is expressed as:________

70%.

Step-by-step explanation:

a) Data and Calculations:

TEST RESULTS Disease Present Disease Absent Total

Positive for Factor X 40 60 100

Negative for Factor X 10 140 150

Total 50 200 250

Negative for X and Disease Absent = 140/200 * 100

= 0.7 * 100

= 70%

b) The specificity refers to the percentage of people who test negative for a specific disease among a group of people who do not have the disease. No test is 100% specific because some people who do not have the disease X will test positive for it (false positive). Therefore, we are testing for the true negative, that the 140 people who tested out of the 200 people who do not have the disease.

8 0

3 years ago

At a local sandwich shop the average customer spends $25 at dinner with a standard deviation of $2.30. In a simple random sample

oee [108]

Answer:

The probability that the mean receipt for dinner is between $24.50 and $25.50 is

P(24.50≤ x ≤ 25.50)= 0.8324

Step-by-step explanation:

Step(i):-

Given mean of Population(μ) = $25

Given standard deviation of the Population (σ) = 2.30

Sample size 'n' = 40

Let 'X' be the random variable in normal distribution

Given X₁ = 24.50

$Z_{1} =\frac{x-mean}{\frac{S.D}{\sqrt{n} } } = \frac{24.50-25}{\frac{2.30}{\sqrt{40} } } = -1.375$

Given X₂ = 25.50

$Z_{2} =\frac{x-mean}{\frac{S.D}{\sqrt{n} } } = \frac{25.50-25}{\frac{2.30}{\sqrt{40} } } = 1.3751$

Step(ii):-

The probability that the mean receipt for dinner is between $24.50 and $25.50

P(x₁≤ x ≤ x₂) = P(Z₁≤ z ≤ Z₂) = A(Z₂) + A(z₁)

P(24.50≤ x ≤ 25.50) = P(-1.375≤ z ≤ 1.375) = A(1.375) + A(1.375)

P(24.50≤ x ≤ 25.50)= 2 A( 1.375)

= 2 × 0.4162 ( from normal table)

= 0.8324

Final answer:-

The probability that the mean receipt for dinner is between $24.50 and $25.50 is 0.8324

4 0

4 years ago

What is the area, in square meters, of the isosceles trapezoid below? 15.8 m 5-4 m 6.6 m Answer: A = ____ m squared

Ronch [10]

Answer:

5.618773 m2

I hope that this is the answer.

4 0

3 years ago

Read 2 more answers

A laptop has a listed price of $892.99 before tax. If the sales tax rate is 8.75%, find the total cost of the laptop wi the sale

Gnesinka [82]

Umm try googling it maybe I’m sorry

4 0

3 years ago

Read 2 more answers