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yKpoI14uk [10]
3 years ago
7

Solve for x. X - 4 = (8x - 16)

Mathematics
2 answers:
8090 [49]3 years ago
8 0

Step-by-step explanation:

x=12/7 or x=1.714

Iteru [2.4K]3 years ago
4 0

Answer:

x=12/7

Step-by-step explanation:

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

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Compound inequalities<br>SOLVE FOR X​
snow_tiger [21]

Answer:

X\geq2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
3. The city council of a large city is considering a new law that prohibits talking on a cell phone while driving. A consumer ri
erik [133]

Answer:

The Subjects: The subject of this research are the drivers who were selected randomly to take part in the experiment

The Treatment: The treatment for this research will therefore be driving and also talking on a cell phone at the same time and also driving while not talking on the phone

The response variable for the experiment: The number of errors that will be made by the drivers as they drive on an obstacle course.

Step-by-step explanation:

6 0
3 years ago
Keegan is printing and selling his original design on t-shirts. He has concluded that for x shirts, in thousands sold his total
Katarina [22]

Answer:

t-shirts: 2790

profit: $12209

Step-by-step explanation:

Given  the function:

p(x) = -x³ + 4x² + x

we want to maximize it.

The following criteria must be satisfied at the maximum:

dp/dx = 0

d²p/dx² < 0

dp/dx = -3x² + 8x + 1 = 0

Using quadratic formula:

x = \frac{-b \pm \sqrt{b^2 -4(a)(c)}}{2(a)}

x = \frac{-8 \pm \sqrt{8^2 -4(-3)(1)}}{2(-3)}

x = \frac{-8 \pm 8.72}{-6}

x_1 = \frac{-8 + 8.72}{-6}

x_1 = -0.12

x_2 = \frac{-8 - 8.72}{-6}

x_2 = 2.79

d²p/dx² = -6x + 8

d²p/dx² at x = -0.12: -6(-0.12) + 8 = 8.72 > 0

d²p/dx² at x = 2.79: -6(2.79) + 8 = -8.74 < 0

Then, he should prints 2.79 thousands, that is, 2790 t-shirts to make maximum profits.

Replacing into profit equation:

p(x) = -(2.79)³ + 4(2.79)² + 2.79 =  12.209

that is, $12209

3 0
3 years ago
How do you know if a square root of something is rational or irrational? like i know it can be represented by a fraction or a ra
ra1l [238]
The square root of a whole number will be rational if the whole number is a perfect square (i.e 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144 etc) and irrational otherwise.

Rational number is a number that can be described as m/n 

so a fraction can be a rational number, 0.8=4/5 
Irrational numbers can't be written as a fraction 

The part about the number having to be a perfect square is still correct, if it's not a prefect square than it will just keep going(a decimal that never ends) 

for example the square root of 0.64 is 0.8 
and the square root of 10 is 3.162277... 
as you can see the 0.64 one ends and is rational, whereas the 10 one just keeps going and is irrational.
5 0
3 years ago
Dan earns $42.75 per month working as a tutor. He worked as a tutor for 4 months. He also earned $52.45 walking dogs in the neig
hjlf

Answer:

step 3

Step-by-step explanation:

in step 3, he wrote that the sum of 171+ 52.45-18.50 was 241.95 when it is 199.95

3 0
2 years ago
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