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Paul [167]
3 years ago
7

What is the rule for the reflection?

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
8 0
The rule for the reflection is (B)
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The formula for the perimeter of a rectangle can be written as P= 2(l+w). Solve the formula for the length l.
Ronch [10]

Undo what is done to l. l has w added and the sum multiplied by 2, so divide by 2 and subtract w:

... l = P/2 -w

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3 years ago
What was the temperature
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It was 65 degrees by lunch time.
6 0
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Forty discrete math students are to be divided into eight discussion groups, each consisting of five students. In how many ways
VARVARA [1.3K]

Answer:

<h2>76904685 ways</h2>

Step-by-step explanation:

Given data

the number of students n=40

the number of groups r= 8

We are going to use the combination approach to solve the problem

nCr= n!/r!(n-r)!

substituting into the expression for the number of ways we have

40C8= 40!/8!(40-8)!

nCr= 40!/8!(32)!

nCr= 40!/8!(32)!

nCr= 40*39*38*37*36*35*34*33*32!/8!(32)!

nCr= 40*39*38*37*36*35*34*33*/8!

nCr= 40*39*38*37*36*35*34*33*/8*7*6*5*4*3*2

nCr= 3100796899200/40320

nCr=76904685 ways

4 0
3 years ago
Can you show me how you worked this: <br><br> Evaluate the expression.<br> 9! − 7!
Aloiza [94]
I hope this helps you



9.8.7!-7!


7! (72-1)

7!.71
3 0
3 years ago
Calculate the distance between the two given point T(6,-2),U(-2,-12)
slava [35]
Use the distance formula: \sqrt{(x2 - x1)^2 + (y2 - y1)^2}

(6, -2), (-2, -12)
\sqrt{(-2 - 6)^2 + (-12 - -2)^2} ⇒ \sqrt{(-8)^2 + (-10)^2}
\sqrt{64 + 100} ⇒ \sqrt{164}
\sqrt{164} = 12.8

The distance between points T and U is 12.8 units.
3 0
3 years ago
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