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blagie [28]
3 years ago
12

Help me with this please

Mathematics
1 answer:
IrinaVladis [17]3 years ago
8 0

Answer:

x = 138

Step-by-step explanation:

Exterior angle thm:

68 + 70 = x

x = 138

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*Please Help* (Guaranteed brainliest for correct answer!)
FinnZ [79.3K]
Lets say that Williams current age is x, since it is currently unknown
From here we know that in 15 years (x+15) he will be 3 times his age 5 years prior (3x-5). Thus we can set these equations up as equal to one another
1) x + 15 = 3(x - 5)
2) x + 15 = 3x-15
3) 30= 2x
4) 15 = x
5) Now this age is his current age of 15 years, but they also want his age 15 years from now
The equation is x + 15 = 3(x - 5)

This should be correct now, sorry for the misconception. Good luck
 
3 0
3 years ago
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the square of a number increased by 5 times the number is equal to 176. find one number for which this could be true
avanturin [10]

Answer:

11 or -16

Step-by-step explanation:

The square of a number increased by 5 times the number is equal to 176.

Let the number be x

Then, x²+5x=176

x²+5x-176=0

We use splitting the middle term method

x²+16x-11x-176=0

x(x+16)-11(x+16)=0

(x-11)(x+16)=0

i.e. either x-11=0 or x+16=0

i.e. either x=11 or x=-16

Hence, the number is either 11 or -16

4 0
2 years ago
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What is the missing number in the sequence? 9/16, 9/8, 9/4, 9/2, 9
Bumek [7]

Answer:

18

Step-by-step explanation:

The system multiplies by 2 each time :)

4 0
3 years ago
Reposting because nobody helped..
Zielflug [23.3K]

Answer:3^2/2^3

Step-by-step explanation:

2^2*3^4/2^5*3^2

3^2/2^3

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what's the question?

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2 years ago
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