All categories

2 years ago

Solve for c: 2(4c-7) is greater than or equal to 8(c-3)

1 answer:

3 0

$2(4c-7)\geq8(c-3)\ \ \ \ |\text{use distributive property}\\\\(2)(4c)-(2)(7)\geq(8)(c)-(8)(3)\\\\8c-14\geq8c-24\ \ \ \ |-8c\\\\-14\geq-24\ \ \ TRUE\\\\\text{therefore your answer is}\ x\in\mathbb{R}\ (all\ real\ numbers)$

You might be interested in

i see two things at the mall one shirt is 32$ and is 70% off and the 2nd shirt is 33$ and is 71% percent off which is a better d

Lemur [1.5K]

They would be an equal price

8 0

3 years ago

Does anyone know this lol

koban [17]

Answer:

62.5

Step-by-step explanation:

P = (6.50f) - 100

All you have to do is plug in 25 for f in the equation and solve for P.

P = (6.50*25) - 100

P = 162.5 - 100

P = 62.5

4 0

2 years ago

The weekly earnings of students in one age group are normally distributed with a standard deviation of 47 dollars. A researcher

ELEN [110]

Answer:

Option D) 340

Step-by-step explanation:

We are given the following in the question:

Alpha, α = 0.05

Population standard deviation, σ = $47

Margin of error = 5

95% Confidence Interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

$\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340$

Thus, the correct answer is

Option D) 340

7 0

2 years ago

!!CHECK MY ANSWERS!!

AlekseyPX

I think you're right. I'm in pre-algebra, and sucks at it. Yet, I keep a A.

4 0

2 years ago

Wsg help me with this<br><br> What is the orthocenter and what is it used in geometry

julia-pushkina [17]

Answer:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers