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4 years ago

What is the answer to 2(12-18x)=x-11x

Mathematics

1 answer:

Ivan4 years ago

4 0

Answer:

x=0

Step-by-step explanation:

move all terms to the left. Then add all the numbers together. Then multiply parenthesis to get rid of them finally add all numbers together

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Your boss is impressed with your work and gives you a 3% raise.if the inflation rate is 3% you are

bixtya [17]

B) making about the same amount in today's dollars

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3 years ago

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Jerry says I've got my money in a great account that compounds interest monthly. The equation y=388 (1.008) represents how much

zheka24 [161]

Answer:

(a)His monthly Interest Rate=0.8%

(b)Annual Interest Rate = 9.6%

Step-by-step explanation:

For a Principal P invested at a yearly rate r, compounded m times in t years

Amount at Compound Interest= $P(1+\frac{r}{m})^{mt}$

Comparing with Jerry's equation y=388 (1.008)

(a)His monthly Interest Rate= 0.008=0.8%

(b)Annual Interest Rate= Monthly Interest Rate X 12 =0.8 X 12 = 9.6%

(c)If I invest $500 at the same rate of return,

Total Money after m months

= $P(1+\frac{r}{m})^{mt}$ $=500(1+0.008)^{m}$ $=500(1.008)^m$

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4 years ago

Which of the following functions illustrates a change in amplitude?

Pachacha [2.7K]

Hey there! :)

Answer:

Step-by-step explanation:

For a graph to have a change in amplitude, there must be a coefficient in front of the equation, or the 'a' value.

Recall that the transformation form of a trigonometric graph is:

y = ±a(cos(b(x-h))+k

Where 'a' is the amplitude

'b' changes the period

'h' is a horizontal shift

'k' is a vertical shift

We can look at each choice and eliminate:

A. There is only a coefficient of -1 in front of the equation, which simply results in a reflection over the x-axis. This is incorrect.

B. This equation contains a b value of 2. This changes the period of the graph, not the amplitude. This is incorrect.

C. This equation contains a coefficient, or 'a' value of -2. The amplitude is changed by a factor of 2. This is correct.

D. This graph only contains a vertical shift of 1 unit up. This is incorrect.

Therefore, C is the correct answer.

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3 years ago

72 is 45% of ______-

Inga [223]

45% * x=72

45/100 *x=72

45x/100=72

45x=7200 /:45

x=160

⇒72 is 45% of 160.

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3 years ago

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A class is given an exam. The distribution of the scores is normal. The mean score is 76 and the standard deviation is 11. Deter

poizon [28]

Answer: required value of c = 79.94.

Step-by-step explanation:

Let x denotes the exam score.

Given: The mean score is 76 and the standard deviation is 11.

to detrmine c , such that the probability of a student having a score greater than c is 36 %.

or P(x>c)=0.36

Using z-score table , we get

z= 0.3584 [z-value corresponds to p-value of 0.36(one-tailed) is 0.3584]

Formula for z:

$z=\dfrac{x-mean}{standard\ deviation}\\\\ 0.3584=\dfrac{c-76}{11}\\\\ c=0.3584\times11+76\\\\ c=76+3.9424\\\\ c\approx 79.94$

hence, required value of c = 79.94.

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3 years ago

What is the answer to 2(12-18x)=x-11x​

What is the answer to 2(12-18x)=x-11x