All categories

3 years ago

Solve (x+1)2 = –5.

Mathematics

1 answer:

katrin [286]3 years ago

3 0

Answer:

A) no real solutions

Step-by-step explanation:

No real solution. in order to x+1 by itself you must square root both sides. that would mean square rooting -5 which creates an imaginary number. so there are no real solutions. Also cause even if x was a negative, when you'd square it, you'll always get a positive.

You might be interested in

What is the value of the rational expression below when x is equal to 3 (17+x)\(x+2)

elena55 [62]

The value of the expression is 4.

We can find this by taking the original equation and plugging in 3 every time we see an x.

$\frac{17 + x}{x + 2}$

$\frac{17 + 3}{3 + 2}$

$\frac{20}{5}$

4 0

3 years ago

Read 2 more answers

Charlotte bought 25 cookies to share with her class, and 5 of them are oatmeal raisin. What percent of the cookies are oatmeal r

LUCKY_DIMON [66]

Answer:

20%

Step-by-step explanation:

25 divided by 5 = 5

Convert to decimal

0.20

Convert to percentage

20%

7 0

3 years ago

Read 2 more answers

An element with mass 130 grams decays by 22% per minute. How much of the element is remaining after 7 minutes, to the nearest 10

shepuryov [24]

22.8 grams of element will be remaining after 7 minutes

Further explanation:

Given

$Mass\ of\ element=130g\\Percentage\ of\ reduction=22\%$

The element reduces (1-22%) in one minute.

The process will be repeated 7 times for 7 minutes

If we have to calculate the amount of element after 7 minutes

then the total reduction will be: (1-22%)^7

$Remaining\ amount=130*(1-22\%)^7\\=130*(1-0.22)^7\\=130*(0.78)^7\\=130*0.18\\=22.84g\\Rounding\ off\ to\ nearest\ tenth\\=22.8g$

22.8 grams of element will be remaining after 7 minutes

Keywords: Decay, Percentage

Learn more about percentage at:

#LearnwithBrainly

6 0

3 years ago

Lisa has collected data to find that the number of pages per book on a book shelf has a normal distribution. What is the probabi

r-ruslan [8.4K]

Answer:

15.85%

Step-by-step explanation:

The empirical rule states that:

68% of all data falls within 1 standard deviation of the mean
95% of all data falls within 2 standard deviation of the mean
99.7% of all data falls within 3 standard deviation of the mean

When we say 1,2,3 standard deviation of the mean, that is, it is evenly distributed in both sides of the mean. For example:

68/2 = 34% of data falls within mean - 1*standard deviation, and

also, 34% of data falls within mean + 1*standard deviation

Now, we see that 192 - 27 = 165, so this is 1 standard deviation of the mean [mean - 1*standard deviation], so 34% of data fall in that range.

But we want, data that ARE FEWER than 165. So, we use property of normal distribution.

Half of data (50%) is left of mean, of which 34% fall within 1 standard deviation So the remaining would fall fewer than 165.

That is 50 - 34 = 16 - 0.15 = 15.85%

<u><em>Note:</em></u> since 99.7% fall within 3 standard deviation of mean, so 100 - 99.7 = 0.3 which is distributed in both sides, so 0.3/2=0.15 is subtracted

6 0

3 years ago

Help plsssssssss ....

erik [133]

Tan is the right answer

hope it helps you ❣❣

<h2>Mark me as brainliest </h2>

4 0

3 years ago

Read 2 more answers