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lara31 [8.8K]
3 years ago
11

Https://www.you tube.com/watch?v=9ce756f2cp8 --- Dark mode on website :)

Mathematics
2 answers:
seropon [69]3 years ago
3 0

Answer:

thxs

Step-by-step explanation:

meriva3 years ago
3 0
Okay, I’ll go check it out
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What number must be added to 15,-6, and 12 to have a mean of 5? Explain.
Genrish500 [490]

You need to add a -1

We can find this by setting up the equation like so

x + (-6) + 12 + 15 / 4 = 5

x + 21 = 20

x = 20 -21

x = -1

Now if we insert -1 where x is located in the equation, you will get a means of 5

3 0
3 years ago
The standard normal curve shown below is a probability density curve for a
Step2247 [10]

Answer:

0.6825

Explanation:

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the approx. amount of shade, but please take this explanation with a grain of salt as I'm not 100% certain. I am certain about the answer however.

8 0
3 years ago
Dan paid 34.30 for a sweater. The price included a 40% markup. Find the cost of the sweater before the markup was added.
hodyreva [135]

Answer:

The cost of the sweater before the markup is $24.50.

Step-by-step explanation:

The percent markup of an item is calculated by subtracting the original cost of the item from the sale price and then dividing by the original cost.  In this case, we are trying to find the original cost, so we know that the percent markup is 40%, or 0.4.  Since the sale price of the item would be 100% of the original cost multiplied by an additional 40% markup, we can take the sale price of the item divided by 140%, or 1.4:  34.30/1.4 = 24.50.

7 0
3 years ago
Solve this polynomial:
nadezda [96]

Answer:

  4ab +10b

Step-by-step explanation:

Perhaps you want to simplify the expression.

  (2.5ab+14b)-(-1.5ab+4b)=2.5ab+14b+1.5ab-4b\\\\=ab(2.5+1.5)+b(14-4)=\boxed{4ab+10b}

8 0
3 years ago
Which graph represents the inequality y-2x≤1?
Furkat [3]

y ≤ 1 + 2x is the answer

5 0
3 years ago
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