Can someone explain what's n+1-3n=-5+n+1-2

Answers

Answer 1

Answer: n + 1 - 3n = -5 + n + 1 - 2

Combine like terms:

n - 3n = -2n

-2n + 1 = -5 + n + 1 - 2

Combine like terms:

-5 + 1 - 2 = -6

-2n + 1 = n - 6

Subtract 'n' to both sides:

-3n + 1 = -6

Subtract 1 to both sides:

-3n = -7

Divide -3 to both sides:

n = 2 1/3 or 7/3

Answer 2

Answer: n+1-3n=5+n+1-2

Simplify it

-2n+1 = n+4

Add 2n to both sides

1 = 3n+4

Subtract 4 from both sides

-3 = 3n

Divide by 3

n = -1

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Which expressions are equal to a real number?

Answers

Answer:

Option B

Option C

Step-by-step explanation:

$i = √(-1)$

⇒ $i^2 = (√(-1))^2 = -1$ , which is a real number.

Similarly, $i^3 = i^2.i = -1 * i = -i$

And we also know that $i^4 = 1$

So, we see that odd powers of $i$ is a complex number and even powers renders us a real number.

Using this we solve the problem.

Option A: $(-4i)^(11)$ 11 is an odd power. This would be a complex number and not a real number.

Option B: $(-3i)^(12)$ Even power of i. So, this should give us a real number.

Option C: $(2 + 3i)^2$

(a + bi)² = a² - b² + 2abi

So, (2 + 3i)² would be a complex number because of the 2bi term.

Option D: (4 + 5i)(4 - 5i)

(a + ib)(a - ib) = a² + b²

So, (4 + 5i)(4 - 5i) = 4² + 5² = 41, a real number.

Option E: (6 + 8i)(8 + 6i)

(a + ib)(c + id) = ac - bd + (ad + bc)i

This would be a complex number because of the (ad + bc) term.

So, Options B and D are real numbers.

Anzelm wants to burn 540 calories while jogging. Jogging burns about 12 calories per minute. When Anzelm goes jogging, he usually plans to stop and rest for about 5 minutes. Complete the equation below to find the total number of minutes (including rest) that Anzelm should plan to be out jogging. Use m to represent the total minutes.

Answers

Anzelm wants to burn 540 calories while jogging. Jogging burns about 12 calories per minute.

he usually plans to stop and rest for about 5 minutes.

m represents the total minutes.

12 calories per minute.

for m minutes the calories burn is 12m

He stop and rest for about 5 minutes. so we need to subtract 5 from total minutes

So expression becomes 12(m-5)

He wants to burn 540 calories. So we set the calories = 540

The equation becomes ,

12(m-5) = 540

Now we solve for m , total number of minutes

12(m-5) = 540(divide by 12 on both sides)

m - 5 = 45

m = 50 ( add 5 on both sides)

Anzelm should plan to be out jogging for 50 minutes

12(m-5)=540. 12 calories per. total minutes gos first in subtraction which is m. Minus 5 minutes.
-Hope it helped-

Carter wants to buy a new movie for $25 he already has $11 dollars saved and his mom will give him $2 for each chore he does what is the least amount of chores Carter will have to do in order to save enough money to buy the movie

Answers

11 + 2x = 25 where x is the minimum number of chores needed
2x = 25 - 11
2x = 14
x = 14/2 = 7
So Carter has to do at least 7 chores to save enough money to buy the movie

Answer:

Step-by-step explanation:

25+11=36+2=38 that is the answer

These triangles are similar. find Y and X

Answers

It these triangles are similar, then the sides of the triangles are in proportion:

$(y)/(10)=(y+4)/(15)$ cross multiply

$15y=10(y+4)$ use distributive property

$15y=10y+40$ subtract 10y from both sides

$5y=40$ divide both sides by 5

$\boxed{y=8}$

$(x)/(4)=(6)/(8)$ cross multiply

$8x=(4)(6)$

$8x=24$ divide both sides by 8

$\boxed{x=3}$

Please help and thank you

Answers

Answer:

Your answer is D. Hoped i helped

Step-by-step explanation:

plot each coordinate, Then see which has the most/all in the shaded area.

Tart & Sweet is a lemonade stand. Use the following bar chart to find Tart & Sweet's total profit from April to June.

Answers

Tart & Sweet's total profit from April to June is -$2.

What is addition?

Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation.

Given:

Tart & Sweet is a lemonade stand.

From the following chart,

In April month,

the stand has profit of -$8.

In May month,

the stand has profit of $2.

In June month,

the stand has profit of $4.

To find the total profit from April to June:

Add all the profits,

-8+2+4