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Kazeer [188]
4 years ago
5

What is the value of this expression when a=3 and b=-1?

Mathematics
1 answer:
lesya692 [45]4 years ago
5 0

Answer:

1/4

Step-by-step explanation:

(\dfrac{3(3)^{-2}(-1)^6}{2(3)^{-1}(-1)^5})^2=

(\dfrac{\frac{1}{3}}{-\frac{2}{3}})^2=

(-\dfrac{1}{2})^2=

\frac{1}{4}

Hope this helps!

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Your answer would be “y=-8”
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Which equation is true for x = –6 and x = 2?
schepotkina [342]

Answer:

x^2+4x-12=0

Step-by-step explanation:

If a equation has two zeros x=a and x=b then equation can be written as

(x-a)(x-b)=0

similarly if a equation has two zeros at x = −6 and x = 2

then equation can be written as

(x+6)(x-2)=0

x^2+6x-2x-12=0

x^2+4x-12=0

Therefore x^2+4x-10 is required equation

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Given: x + y = 6.
jolli1 [7]
X + y = 6

when x = -15
-15 + y = 6
y = 6 + 15
y = 21.....solution is (-15,21)

when x = -6
-6 + y = 6
y = 6 + 6
y = 12...solution (-6,12)

when x = -1
-1 + y = 6
y = 6 + 1
y = 7...solution is (-1,7)

so ur answer is : (-15,21) , (-6,12) , (-1,7)
7 0
3 years ago
Help please <br> I need to pass my class
valina [46]

Answer:

look below

Step-by-step explanation:

thing to note:

sin = opposite/hypotenuse

cos = adjacent/hypotenuse

tan = opposite/adjacent

opposite= side across angle you are using

hypotenuse= side across 90 degree angle

adjacent= remaining side

angle B

sin = 6/10

cos = 8/10

tan = 6/8

angle C

sin = 8/10

cos = 6/10

tan = 8/6

hope that helped. let me know if you have any questions:)

3 0
3 years ago
Mr. Garcia has 3/4 yard of ribbon to make badges for winners at a side spray uses 1/8 yard of ribbon for each badge how many bad
Anton [14]

Answer:

The total number of badges miss Garcia can make=6

Step-by-step explanation:

Step 1: Express the total length of ribbon

Use the expression below;

R=B×N

where;

R=total length of ribbon Garcia has

B=length per badge

N=number of badges made

In our case;

R=3/4 yard

B=1/8 yard

N=n

replacing;

(3/4)=(1/8)×n

n=(3/4)×8

n=6

The total number of badges miss Garcia can make=6

8 0
4 years ago
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