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irinina [24]
3 years ago
13

Solve for x8x²-5 = 11​

Mathematics
1 answer:
geniusboy [140]3 years ago
5 0

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x = √ 2 , − √ 2

Decimal Form:

x = 1.41421356 , − 1.41421356

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A 16 oz box of cereal costs $2.56. How much would a 40 oz box cost?
laiz [17]

Answer:

$6.40

Step-by-step explanation:

2.56 / 16 = 0.16
so 16 cents per oz
16 * 40 = 640

8 0
2 years ago
Given the functions f(x) = 7x + 13 and g(x) = x + 2, which of the following functions represents f[g(x)] correctly? (2 points)
Svetach [21]

Answer:

The value of f[ g(x) ] = 7x + 27

Step-by-step explanation:

It is given that, f( x ) = 7x + 13 and g( x ) = x + 2

<u>To find the value of f(g(x))</u>

g(x) = x + 2 and 7x + 13   (given)

Let g(x) = x + 2

f [ g(x) ] = 7(x + 2) + 13  [ substitute the value of g(x) in f(x) ]

 = 7x + 14 + 13

 = 7x + 27

Therefore the value of f[ g(x) ] = 7x + 27

8 0
3 years ago
CAN ANYONE HELP ME PLEASE!!!!!!
HACTEHA [7]
Not sure if this helps

3 0
2 years ago
Describe a real world situation for the equation +4+(-4=0
Likurg_2 [28]
You could use the equation
+4+(-4)=0 if:

-you earn $4 and spend it

-buying 4 candy bars then eating them

-earning 4 points then losing them
6 0
3 years ago
Lucas' mom is eight years older than twice his age. The sum of their ages is 77. How old are Lucas and his mom?
Rudiy27

Answer:

Age of Lucas = 23 years

Age of Lucas Mom = 54 Years

Step-by-step explanation:

In this question we have to find the age of Lucas and his Mom

Let the age of Lucas be x

According to given condition

Twice of his age 2 * x =2x

Eight years older means age + 8x

So

Age of his mom = Twice of his age + 8

                           = 2x + 8               .................(ii)

now according to second condition

Age of Lucas + Age of his mom = 77

Put the values in the condition above

x + (2x + 8) = 77

x + 2x + 8 =77

3x + 8 = 77

subtracting 8 from both sides

3x + 8 - 8 = 77 -8

3x = 69

Dividing both sides by 3

x = 69 / 3

x = 23 years

Age of Lucas = 23 years

Now from equation (i)

Age of Lucas Mom = 2(x) + 8

putting in the value we get

Age of Lucas Mom = 2 ( 23) + 8

                               =46 + 8

                               =54 Years

Age of Lucas Mom = 54 Years

3 0
3 years ago
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