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vekshin1
2 years ago
6

Is x=4 a solution to the equation 9x = 32 + x?

Mathematics
2 answers:
madam [21]2 years ago
8 0

Answer:

yes

Step-by-step explanation:

because 9*4=36 and well it's 36=32*? so 36-32 is 4

So well the solution is x=4

Sauron [17]2 years ago
5 0

Answer:

Yes, it is.

Explanation:

For x = 4 to be a solution of the given eqⁿ, it must satisfy it. That is,

9x = 32 + x => 8x - 32 = 0

=> f(x) = 8x - 32

At x = 4,

f(4) = 8(4) - 32 = 32 - 32 = 0

Since, f(4) = 0, thus, x = 4 is a solution to the given eqⁿ.

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Nike marks up the original cost of all of the shoes they sell by 30%. Andre wants to buy a pair of shoes that has a price tag of
Kisachek [45]

Answer:

$90

Step-by-step explanation:

The shoes now cost 130% of the original cost

The original cost is 100%

Take the new amount and divide it by 130:

117/130 = .90

Then multiply that number by 100 to get the original percent

.90 x 100 = $90

To check, multiply $90 by 130% or 1.30 to make sure that a 30% increase makes the product $117

$90 x 1.30 = $117

7 0
2 years ago
What is an equation of the line that passes through the point (2, 4 and is perpendicular to the line whose equation is 3y = 6x 3
Maru [420]
Perpendicular line always have slopes that are negative reciprocals of one another.  Mathematically,

m1*m2=-1

So to be perpendicular to the line given, let's rearrange it to the point slope form of a line...

3y=6x ?3 (not sure what you wanted to type there)

anyway isolating y by dividing both side by three will leave 2x where 2 is the slope.

So for the other line to be perpendicular, m*2=-1, m=-1/2, now we have:

y=-x/2 +b, we can now you the point given to solve for b

4=-2/2 +b

4=-1+b

b=5 so

y=-x/2 +5 or more neatly

y=(10-x)/2
3 0
3 years ago
Evaluate the expression.<br> (-5)(5) +5=
Ierofanga [76]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

(-5)(5) +5  Equation

Step 2

(-5)(5) +5 Simplify

(-5)(5) +5

Step 3

(-5)(5) +5  Add and multiply them

(-25)+5

answer

-20

8 0
3 years ago
Find the x-intercept and y-intercept of the liné.<br> - 6x + 5y = 21
Hunter-Best [27]

Answer:

x=-3.5 or -7/2 (same thing)

y=21/5

Step-by-step explanation:

x intercept is when y=0

y intercept is when x=0

so

x intercept is

-6x=21

x=21/-6

x=-3.5

y intercept is

5y=21

y=21/5

7 0
3 years ago
Problem :
notsponge [240]
400 - 2 x Age = 244
-2*Age = -156
Age = 78 years
3 0
3 years ago
Read 2 more answers
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