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Andru [333]
3 years ago
14

The product of 3 and the square of a number increased by that number

Mathematics
1 answer:
shepuryov [24]3 years ago
8 0

Answer: 3?

Step-by-step explanation:

You might be interested in
: lCompare and contrast the rules for Adding and Subtracting positive andnegative numbers to the rules for Multiplying and Divid
Oksanka [162]

The rules of adding and subtracting positive and negative numbers include

1) When we add 2 positive numbers, the result is a positive number

2) When we subtract 2 positive numbers, the result would be positive as long as a smaller number is being subtracted from a bigger number, otherwise, the result would be negative

3)When we add 2 negative numbers, the result can be positive if we add the negative number to a bigger positive number or the result would be negative if we add the negative number to a lower positive number

4)When we subtract 2 negative numbers, the result is always negative

The rules of multiplying and dividing positive and negative numbers include

1) When we multiply 2 positive numbers, the result is always positive

2) When we multiply 2 negative numbers, the result is always positive

3) When we divide 2 positive numbers, the result is always positive

4) When we divide 2 negative numbers, the result is always positive

5) When we multiply or divide a positive number by a negative number, the result is always negative.

5 0
1 year ago
Which equation can be used to solve the problem?
Mice21 [21]
m=5\frac{1}{4}/ \frac{3}{4} \\ \frac{\frac{3}{4}}{m}= 5\frac{1}{4}

C
4 0
3 years ago
ꜱᴇᴇᴍꜱ ᴇᴀꜱʏ ᴊᴜꜱᴛ ᴄᴀɴ’ᴛ ꜰɪɢᴜʀᴇ ɪᴛ ᴏᴜᴛ
amid [387]

Answer:

123°

Step-by-step explanation:

2z +9 = x

y = z

2Z +9 + X + z +Y = 360

Substitute for Z

2Z +9 + 2z +9 + z + z = 360

6z +18 = 360

6Z = 342

Z = 57

2(57) +9 = 123

X = 123

3 0
2 years ago
Read 2 more answers
The increasing cost of health care is an important issue today. Suppose that a random sample of 36 small companiesthat offer pai
garri49 [273]

Answer:

The 99% confidence interval is given by ($109.386;$138.613)

Step-by-step explanation:

1) Notation and definitions

n=36 represent the sample size

\bar X= 124 represent the sample mean  

s=32 represent the sample standard deviation

m represent the margin of error

Confidence =99% or 0.99

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

2) Calculate the critical value tc

In order to find the critical value is important to mention that we don't know about the population standard deviation, so on this case we need to use the t distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. The degrees of freedom are given by:  

df=n-1=36-1=35  

We can find the critical values in excel using the following formulas:  

"=T.INV(0.005,31)" for t_{\alpha/2}=-2.74  

"=T.INV(1-0.005,31)" for t_{1-\alpha/2}=2.74  

The critical value tc=\pm 2.74

3) Calculate the margin of error (m)

The margin of error for the sample mean is given by this formula:

m=t_c \frac{s}{\sqrt{n}}

m=2.74 \frac{32}{\sqrt{36}}=14.613

4) Calculate the confidence interval  

The interval for the mean is given by this formula:

\bar X \pm t_{c} \frac{s}{\sqrt{n}}

And calculating the limits we got:

124 - 2.74 \frac{32}{\sqrt{36}}=109.386

124 + 2.74 \frac{32}{\sqrt{36}}=138.613

The 99% confidence interval is given by ($109.386;$138.613)

4 0
3 years ago
Assignment
Bumek [7]

Answer:

The value of the function f(x) at x=a can be determined by substituting a instead of x into the function expression.

1. When x=-1, then

f(-1) = 2 * (-1)^3 - 3 * (-1)^2 + 7 = -2 - 3 + 7 = 2.

2. When x=1, then

f(1) = 2 * 1^3 - 3 * 1^2 + 7 = 2 - 3 + 7 = 6.

3. When x=2, then

f(-1) = 2 * 2^3 - 3 * 2^2 + 7 = 16 - 12 + 7 = 11.

Step-by-step explanation:

3 0
3 years ago
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