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rewona [7]
3 years ago
13

What is the value of x?

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
7 0

Answer: 12

Step-by-step explanation:

You can use what is called geometric mean to solve this.

The hypotenuse of this triangle is split into two sections. One section corresponds to/equal to the altitude which is our "X", which corresponds to/equal to the second section.

You find "X" by using geometric mean and the proportion:

16/X=X/9

Then cross multiply to get 16 x 9= 144

then 144=x²

Solve for X.

X=12

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A line has a slope of 4 and passes through the point (2, 6). What is the equation in slope-intercept form?
Marrrta [24]

Answer:

y=4x-2

Step-by-step explanation:

y=mx+b

where m=slope and b=y-intercept.

y-6=4(x-2)

y-6=4x-8

y=4x-8+6

y=4x-2

8 0
4 years ago
Use foil method (8a - 8)(4a + 1)
BlackZzzverrR [31]
The answer is:  " 32a² − 24a − 8 " .
__________________________________________________
Given:
__________________________________________________
(8a − 8)(4a + 1) ;  Let us expand this expression using the:  "FOIL" method.
___________________________________________________
"FOIL" stands for "<u>F</u>irst terms, <u>O</u>uter terms, <u> I</u>nner Terms, <u>L</u>ast Terms" ;
           in that order.
___________________________________________________
Basically:
_______________________________________________________
(a + b)(c + d) = ac + ad + bc + bd ;

in which the:

<u>F</u>irst term is:    "ac" ;
<u>O</u>uter term is:  "ad" ;
<u>I </u>nner term is:   "bc" ;
<u>L</u>ast term is:    "bd " .
__________________________________
So; we have (given):

(8a − 8)(4a + 1) ;
__________________________________________________
Let's take the "<u>F</u>irst, <u>O</u>uter, <u> </u><u>I</u>nner, and <u>L</u>ast terms" ; as follows:
__________________________________________________
<u>F</u>:  (8a)*(4a) = 32a² ;
__________________________________________________
<u>O</u>:  (8a)*(1) = 8a ;
__________________________________________________
<u>I </u>:   (-8)*(4a) = -32a ;
__________________________________________________
<u>L</u>:  (-8)*(1) = -8
__________________________________________________
Now, let us write out these terms:
__________________________________________________
  32a² + 8a − 32a - 8 ;
__________________________________________________
Now, combine the "like terms" in this expression; to simplify:

       + 8a − 32a = -24a ;
__________________________________________________
and rewrite the simplified expression ; which is:
__________________________________________________
        32a² − 24a − 8 .
______________________________________________________ 
6 0
3 years ago
Jerritt wants to buy a car but it costs
o-na [289]

Answer:

47 weeks

Step-by-step explanation:

you multiply 20 times 5 because he makes 5 dollars and hour and works 20 hours a week, so then you get 100. so he makes 100 dollars in a week. then you divide 100 by 4650 and get 46.5 which rounded up is 47. so he needs to work 47 weeks.

5 0
3 years ago
the left and right page numbers of an open book are two consecutive integers whose sum is 211. find these page numbers.
Likurg_2 [28]

Answer:

105 and 106

Step-by-step explanation:

The consecutive pages are such that the difference between the numbers of these pages is 1. As such, if the number on the first of the two pages is x, the second will be x + 1.

Hence, given that the sum of the numbers two pages is 211,

x + x + 1 = 211

2x = 210

x = 105, the next

= 105 + 1

= 106  

7 0
3 years ago
I have no idea just please helppp ☺️
podryga [215]

Answer:

x = 0

Step-by-step explanation:

2x - 6 + 9 ; -6 + 9 = 3

2x + 3= 3x + 3 + x

3x plus x = 4x

2x + 3 = 4x + 3

x = 0

8 0
4 years ago
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