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3 years ago

Solve the inequality 2c/3+1>7

Mathematics

1 answer:

beks73 [17]3 years ago

6 0

Answer:

c > 9

Step-by-step explanation:

(2c/3) + 1 > 7 subtract 1 from both sides

2c/3 > 7 -1

2c/3 > 6 (multiply both sides by 3)

2c > 6(3)

2c>18 (divide both sides by 2)

c > 18 / 2

c > 9

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(n/2)^2 + (n/2)^2 = 16 (simplify and get (n))

mote1985 [20]

(¹/₂n)² + (¹/₂n)² = 16
¹/₄n² + ¹/₄n² = 16
¹/₂n² = 16
2(¹/₂n²) = 2(16)
n² = 32
√n² = √32
n = ±4√2

4 0

4 years ago

Find they coordinate of the vertex <img src="https://tex.z-dn.net/?f=f%28%202%29%20%3D2%5E%7B2%7D%20-4%282%29-5" id="TexFormula1

Sati [7]

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8 0

3 years ago

The circumference of a circle F is about 25 cm

lana [24]

THE AWNSER WILL BE 50 YOU TIMES IT BY 2 SO 2 TIMES 25 IS 50 IM IN COLLEGE PEPS I KNOW EVERYTHING

7 0

4 years ago

If 15 chocolates cost $11 then how much will one chocolate cost

mina [271]

Answer:

1 chocolate will cost about $0.73

Explanation:

You'd have to fine the unit rate. To do so you divide the cost,$11, by the number of chocolates,15 .

8 0

3 years ago

Suppose that time spent on hold per call with customer service at a large telecom company is normally distributed with a mean µ

lana66690 [7]

Answer:

0.3108 is the probability that the sample mean is between 7.8 and 8.2 minutes.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8 minutes

Standard Deviation, σ = 2.5 minutes

Sample size, n = 25

We are given that the distribution of time spent is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{2.5}{\sqrt{25}} = 0.5$

P(sample mean is between 7.8 and 8.2 minutes)

$P(7.8 \leq x \leq 8.2)\\\\ = P(\displaystyle\frac{7.8 - 8}{0.5} \leq z \leq \displaystyle\frac{8.2-8}{0.5})\\\\ = P(-0.4 \leq z \leq 0.4})\\\\= P(z < 0.4) - P(z < -0.4)\\\\= 0.6554 -0.3446= 0.3108$

0.3108 is the probability that the sample mean is between 7.8 and 8.2 minutes.

4 0

4 years ago