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Svetlanka [38]
3 years ago
5

What is the area this trapezoid?

Mathematics
2 answers:
Svetlanka [38]3 years ago
8 0

Step-by-step explanation:

Area = 0.5(19+25)(20) = 440cm².

Sav [38]3 years ago
4 0

Answer:

440cm

Step-by-step explanation:

a= a+b/2 (h)

a= 19+25/2 (20)

a= 44/2 (20)

a= 22 (20)

a=440

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Which is a positively skewed distribution?
Alona [7]

Answer:

to me it looks like B but i could be wrong

Step-by-step explanation:

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3 years ago
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HELP
rjkz [21]
This can be solve using systems of linear equation Let x be the number of milk chocolate candy bar sold Y be the number of white chocolate sold  
X + y = 330
2x + 3y = 900
X = 90
Y =240 white chocolate  
2. Website 1: y = 1.5x +30
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3 years ago
Please help urgently.
const2013 [10]

Answer:

No

Step-by-step explanation:

He's only won 50% of the games bc he lost one and one one. 1/2

7 0
3 years ago
700+a=3944-b=c-80=3000​
velikii [3]

Answer:

A = 3244

B = 864

C = 3080

Step-by-step explanation:

 700 + a = 3944

 -700          -700

a = 3244

 3944 - b = c - 80 = 3000

c - 80 = 3000

  +80       +80

c = 3080

3944 - b = c ---> 3944 - b = 3080

                          -3944        -3944

                               -b = -864 --->  \frac{-b}{-1} = \frac{-864}{-1}

7 0
3 years ago
The SAT Reasoning Test (formerly called the Scholastic Aptitude Test) is perhaps the most widely used standardized test for coll
mihalych1998 [28]

Given Information:  

Mean SAT score = μ = 1500

Standard deviation of SAT score = σ = 3 00

Required Information:  

Minimum score in the top 10% of this test that qualifies for the scholarship = ?

Answer:

\bar{x} = 1884\\

Step-by-step explanation:

What is Normal Distribution?

We are given a Normal Distribution, which is a continuous probability distribution and is symmetrical around the mean. The shape of this distribution is like a bell curve and most of the data is clustered around the mean. The area under this bell shaped curve represents the probability.  

We want to find out the minimum score that qualifies for the scholarship by scoring in the top 10% of this test.

P(X > \bar{x} )= P(Z > \bar{x}) = 0.10\\P(X < \bar{x} )= P(Z < \bar{x}) = 1 - 0.10\\P(X < \bar{x} )= P(Z < \bar{x}) = 0.90\\

The z-score corresponding to the probability of 0.90 is 1.28 (from the z-table)

\bar{x} = \mu + z(\sigma) \\\bar{x} = 1500 + 1.28(300)\\\bar{x} = 1500 + 384\\\bar{x} = 1884\\

Therefore, you need to score 1884 in order to  qualify for the scholarship.

How to use z-table?

Step 1:

In the z-table, find the probability value of 0.90 and note down the value of the that row which is 1.2

Step 2:

Then look up at the top of z-table and note down the value of the that column which is 0.08

Step 3:

Finally, note down the intersection of step 1 and step 2 which is 1.28

4 0
3 years ago
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