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solmaris [256]
2 years ago
12

Find the value of k when 5^-3 + 5^-4 = 5^k x 5^-4

Mathematics
2 answers:
lubasha [3.4K]2 years ago
8 0

Answer:

Given , 1/2 is a solution of the equation

or, 1/4 - 5/4 = -k/2

or, -k/2 = -1

or k = 2

Step-by-step explanation:

GalinKa [24]2 years ago
4 0

Answer:

k= 6/5 or 1.12

Step-by-step explanation:

You isolate the variable by dividing each side by factors that don't contain the variable. This variable (K) is not a whole number so I gave you the fraction and rounded decimal form. Hope this helps :)

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24/r=36/27 what is r? And one more w/0.16 = 6.25 what is w
Eddi Din [679]
24/r= 36/27

Cross multiply:
36*r= 24*27
⇒ r= 24*27/36= 18

r=18~

w/0.16 = 6.25
⇒ w= 6.25*0.16
⇒ w= 1

w=1~
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3 years ago
A group of students were asked if they carry a credit card. The responses are listed in the table.
lina2011 [118]

The correct Answer is:

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Which point has coordinates (–5, 8)?
Step2247 [10]

Answer:

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Step-by-step explanation:

8 0
2 years ago
The shortest side of an isosceles triangle is 26 cm less than twice as long as the other sides. The perimeter of the triangle is
olya-2409 [2.1K]

Answer:

22cm,24cm,24cm

Step-by-step explanation:

Let us call one of the other sides x

the shortest side = 2x-26

in an isosceles, 2 sides are equal (x in this case)

so we now have sides of x,x and 2x-26

form an eqution from this.

4x-26=70

4x=96

x=24

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thus, the shortest side is 22cm and the other sides are both 24cm

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Answer:

it would be 4

Step-by-step explanation:

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