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Fantom [35]
2 years ago
5

4. Mrs. Johnson informed her students that

Mathematics
1 answer:
Elodia [21]2 years ago
8 0
X>25

Hope this helps
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How many four letter permutations can be formed from the first five letters of the alphabet?
Maru [420]

Answer:   120

<u>Step-by-step explanation:</u>

Permutation means that order matters.

_nP_r = \dfrac{n!}{(n-r)!}\quad \text{where n is the total \# of items and r is the quantity chosen} \\\\\text{In the given problem, n = 5 and r = 4}\\\\\\_5P_4=\dfrac{5!}{(5-4)!} = \dfrac{5\times 4\times 3\times 2 \times 1}{1}=120

8 0
3 years ago
Rewrite using a negative exponent.<br> 1/a ^4
vesna_86 [32]

Answer: a^-4

Step-by-step explanation:

  \frac{1-4}{a^4-4}  = a^-4

8 0
3 years ago
Help plss (100pts) Direct variation
antiseptic1488 [7]
No that is an inverse variation, a direct variation must have a y that is directly proportional to x while the picture shows a y that is inversely proportional to x <span />
7 0
3 years ago
Read 2 more answers
WLL GIVE BRAINLIST PLEASE help... i sincerely don't even know where to begin here. ​
Harman [31]

Answer:

y = 5

Step-by-step explanation:

WY is the perpendicular bisector of XZ and so divides ΔWXZ into 2 congruent triangles ΔWXY and ΔWZY

Hence WZ = WX ← corresponding sides, thus

5y - 8 = 2y + 7 ( subtract 2y from both sides )

3y - 8 = 7 ( add 8 to both sides )

3y = 15 ( divide both sides by 3 )

y = 5

4 0
3 years ago
Read 2 more answers
Help please asap! Struggling with math graph problem
Kay [80]


We're told (5,-2) is on the line, that's x=5, y=-2


First one y-5 = -7, (x+2)/3=7/3, not equal


Second one y+5=3, (x-2)/3=1, not equal


Third one y+2=0, (x-5)/3=0, TRUE, equal


Fourth one, y-2=-4 (5+5)/3=10/3, not equal



Answer: third choice y+2 = (1/3)(x+5)



7 0
3 years ago
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