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Zigmanuir [339]
2 years ago
11

5x + 2 + 3x + 5 = ?

Mathematics
1 answer:
Mama L [17]2 years ago
8 0

Answer: 8x + 7 = ?

Step-by-step explanation: There isn't anything on the other side so all I can do is simplify the left.

You might be interested in
(x^4 – x^2 – 6) ÷ (x^2 + 8)
gtnhenbr [62]

Answer:

x² - 9  Remainder 66

Step-by-step explanation:

Find the attachment below for a step by step explanation.

8 0
3 years ago
Read 2 more answers
On Monday, a local hamburger shop sold a combined total 288 of hamburgers and cheeseburgers. The number of cheeseburgers sold wa
Oxana [17]

Answer:

288=x+(2x)

288=96+(2x96)

288=96+(192)

288=288

x=96

can I have a brainliest lol

3 0
3 years ago
A survey is to be conducted to determine the average driving in miles by Minnesota State University, Mankato students. The inves
Nadusha1986 [10]

Answer:

n=(\frac{1.75(8.2)}{1.5})^2 =91.52 \approx 92

So the answer for this case would be n=92 rounded up to the nearest integer

Step-by-step explanation:

Previous concepts

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".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size  

Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =1.5 and we are interested in order to find the value of n, if we solve n from equation (b) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The critical value for 92% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.04;0;1)", and we got z_{\alpha/2}=1.75, replacing into formula (b) we got:

n=(\frac{1.75(8.2)}{1.5})^2 =91.52 \approx 92

So the answer for this case would be n=92 rounded up to the nearest integer

5 0
3 years ago
At a carnival, food tickets cost $2 each and ride tickets cost $3 each. A total of $1,240 was collected at the carnival. The num
beks73 [17]
If you have to unknown variables, you have to eliminate one, e.g. Like this:
2×(2y-10)+3y=1240. Now there is only one unknown variable
4y-20+3y=1240
7y-20=1240
7y=1260
y=1260/7=180

Now you can calculate x
x=2y-10=2×180-10=360-10=350. ( You can also use the other equation but This one is easier)
6 0
3 years ago
What is the y-value of p?<br> A. -18<br> B. -16<br> C. -12<br> d. -10
beks73 [17]
B because it’s the right answer I’m telling you it is so believe it
5 0
3 years ago
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