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Luba_88 [7]
2 years ago
12

Triangle A'B'C'is the result of reflecting triangle ABC across the line l

Mathematics
1 answer:
Hoochie [10]2 years ago
6 0

9514 1404 393

Answer:

  b, c

Step-by-step explanation:

Reflection across a line is a "rigid" transformation, so linear measures and angle measures remain unchanged. (b and c are true statements)

Reflection across a line skew to the y-axis will mean that any segment originally perpendicular to the y-axis will not be after the reflection. ('a' is not a true statement)

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Y = 1/4x if x is 20, what is the value of y ?
AveGali [126]
Y = 1/4x 
Y= 1/4(20)
Y=5
5 0
3 years ago
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5ab^2 - 12a^2b + 3ab + ab^2 + 4a^2b
Agata [3.3K]

Answer:

(a) 6ab² - 8a²b + 3ab

Step-by-step explanation:

Given: 5ab² - 12a²b + 3ab + ab² + 4a²b

In this question, we will be combining like terms.

What are like terms?

Like terms are terms with the same variables and power. For example, 2x and 4x, as well as 2a² and 4a².

Combine like terms:

5ab² - 12a²b + 3ab + ab² + 4a²b

(5ab² + ab²) + (-12a²b + 4a²b) + 3ab

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4 0
1 year ago
Find the volume of the sphere. Give the answer in terms of pi and rounded to the nearest cubic foot.
Inessa05 [86]
Hi there!

The formula for the volume of a sphere is V = 4/3(pi)(r^3). Using this formula, we can plug in what we know and solve.

WORK:
V = 4/3(pi)(10^3)
V = 4/3(1000pi)
V = 4000pi/3 or 1333.3 pi
V also = 4188.8

Hope this helps!! :)
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3 0
3 years ago
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At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?
Gnoma [55]

There would be 12 people at the party!

In general, with n+1 people, the number of handshakes is the sum of the first n consecutive numbers: 1+2+3+ ... + n.

Since this sum is n(n+1)/2, we need to solve the equation n(n+1)/2 = 66.

This is the quadratic equation n2+ n -132 = 0. Solving for n, we obtain 11 as the answer and deduce that there were 12 people at the party.

Since 66 is a relatively small number, you can also solve this problem with a hand calculator. Add 1 + 2 = + 3 = +... etc. until the total is 66. The last number that you entered (11) is n.

Hope this helps!

3 0
2 years ago
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PLEASE HELP ME QUICKKK, FIRST CORRECT PERSON GETS BRAINLIEST​
Marta_Voda [28]
C.) is the best answer others are less then 50%.

C.) $35 is $15 more then 20 this is over 50%

Please like if helpful!
6 0
2 years ago
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