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Leviafan [203]
3 years ago
9

Determine whether each quadrilateral is a parallelogram. Write yes or no. If yes, give a reason for your answer. ​

Mathematics
1 answer:
emmasim [6.3K]3 years ago
6 0

Answer:

yes

Step-by-step explanation:

All of the opposite sides are parallel  to each other.  

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Mother mixed cream and milk in the ratio of 2 parts cream to 3 parts milk. How many cups of each are needed to have 80 cups of m
alukav5142 [94]

Answer:

Cream = 32 cups

Milk = 48 cups

Step-by-step explanation:

Here, we want to share the ratio

The ratio here is 2:3

cream: milk

For cream;

2/5 * 80 = 32 cups

For milk;

3/5 * 80 = 48 cups

6 0
2 years ago
28x^2 - 5x - 3 = 0 what is the answer
olga nikolaevna [1]

Answer:

x=

3 /7

or x=

−1 /4

Step-by-step explanation:

8 0
3 years ago
According to the Pew Internet & American Life Project, 54% of Internet users have a wireless connection to the Internet via
Setler79 [48]

Answer: 0.135

Step-by-step explanation:

if 54 % of internet users have a wireless connection then number of people that do nor have a wireless connection =46%.

Let A be the event that 54% of internet users have wireless connection.

Let B be the event that 25% of these users that have internet connection use twitter to share updates about themselves.

Hence, probability of A and B happening becomes:

P(AnB) = P(A) * P(B)

P(AnB) = 0.54 * 0.25

P(AnB) = 0.135

4 0
3 years ago
Assume that we want to construct a confidence interval. Do one of the​ following, as​ appropriate: (a) find the critical value t
Feliz [49]

Considering that we have the standard deviation for the sample, the t-distribution will be used, and the critical value is t = 2.6682.

<h3>When should the t-distribution and the z-distribution be used?</h3>
  • If we have the standard deviation for the sample, the t-distribution should be used.
  • If we have the standard deviation for the population, the z-distribution should be used.

In this problem, σ is not​ known, hence we get the standard deviation of the sample from the histogram and the t-distribution is used.

Using a t-distribution calculator, considering a <em>confidence level of 99​%</em> and 56 - 1 = <em>55 df</em>, the critical value is t = 2.6682.

More can be learned about the t-distribution at brainly.com/question/16162795

4 0
2 years ago
A rectangular box is x feet long and x feet wide. The volume of the box is (4x8 + 3x6) cubic feet. What polynomial represents th
andreev551 [17]
V=length\times width \times height\\\\\dfrac{V}{length\times width}=height\\\\\dfrac{4x^{8}+3x^{6}}{x^{2}}=height\\\\height=4x^{6}+3x^{4}
5 0
3 years ago
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