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Alexus [3.1K]
3 years ago
11

Square ABCD has coordinates A(−10, 5) , B(10, 5), C(10, 0) , and D(−10, 0) . Square A'B'C'D' has coordinates A′(−10,−5),B′(10,−5

) , C'(10, 0) , and D′(−10, 0) . Square A"B"C"D" has coordinates A′′(−2, −1), B′′(2, −1) , C"(2, 0) , and D′′(−2, 0) .
Which transformations describe why squares ABCD and A"B"C"D" are similar?

​ A).Square ABCD ​ was reflected across the y-axis and then dilated by a scale factor of 5 to form ​ square A"B"C"D" ​

​ B).Square ABCD ​ was dilated by a scale factor of 5 and then rotated 90° counterclockwise to form ​ square A"B"C"D" ​ .

C).​ Square ABCD ​ was reflected across the x-axis and then dilated by a scale factor of 1/5 to form square A"B"C"D" .

D).​ Square ABCD ​ was dilated by a scale factor of 1/5 and then rotated 90° counterclockwise to form ​ square A"B"C"D" ​
Mathematics
1 answer:
neonofarm [45]3 years ago
8 0
The answer would either be A or D
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Step-by-step explanation:

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Rainbow [258]

Answer:

H_0:\mu =873\\\\H_a: \mu

Step-by-step explanation:

Given : In a study investigating a link between walking and improved​ health, researchers reported that adults walked an average of 873 minutes in the past month for the purpose of health or recreation.

Claim : The true average number of minutes in the past month that adults walked for the purpose of health or recreation is lower than 873 minutes.

i.e. \mu

We know that the null hypothesis contains equal sign , then the set of hypothesis for the given situation will be :-

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4 0
2 years ago
The expression 2(a+b)=−8.1 for certain values of a and b. Find the value of the following expressions for the same values of a a
marusya05 [52]

Answer:

2.025

Step-by-step explanation:

In this problem, you don't necessarily need to find the exact values of a and b. Rather, find the value of (a+b) first, and then you can substitute it into the next equation. First, you can divide both sides of the first equation 2(a+b)= -8.1 by 2, to get (a+b)=-4.05. Now, subsitute the value of (a+b) into the second equation, -0.5(a+b), to get -0.5(-4.05). From here, you can calculate that -0.5 times -4.05 is  2.025. Hope this helped!

4 0
3 years ago
Stands steakhouse has a server to cook ratio of 5 to to tell a number of servers and cooks are 42 how many servers the stands st
kow [346]

Answer:

Stands Steakhouse has 210 servers.

Step-by-step explanation:

5 servers to 1 cook.

5/1 = x/42

x = 5 * 42 = 210

5 0
2 years ago
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vivado [14]
Expected value = Sum of Probability * Cost of each ice cream.

Expected value

=  50%* $1.20 + 30%* $2.00 + 2<span>0%* $3.50
</span>
=  0.50* $1.20 + 0.30* $2.00 + 0.2<span>0* $3.50
</span>
= $1.90

Expected value of the cost of one ice cream = $1.90 
8 0
3 years ago
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