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3 years ago

5|9-5n|-7=38 how do I solve this

Mathematics

1 answer:

Marina86 [1]3 years ago

7 0

n has 2 solutions here

n is equal to 0 and 3.6

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I srsly do not understand!!

Andrews [41]

Answer:

Step 2 is incorrect because they forgot to flip the sign in the inequality.

Step-by-step explanation:

When you multiply or divide an inequality by a negative number, you must flip the sign.

Ex) > to <

5 0

3 years ago

If a=b(1/n is equivalent to an=b then 43 is equivalent to

sesenic [268]

I don't know I'm just going to 8th grade but I know you need to put variables together and multiply so you get your answer

5 0

3 years ago

Read 2 more answers

Calculate the final selling price to the nearest cent and markdown percent to the nearest hundredth percent:

saw5 [17]

There are a couple of ways you can go at this. One way is to look at the price multipliers. For a markdown of d, the price is multiplied by 1-d. For a markup of u, the price is multiplied by 1+u. Your original price is multiplied by ...
35% markdown: (1 - 0.35) = 0.65
25% markdown: (1 - 0.25) = 0.75
18% markup: (1 + 0.18) = 1.18
15% markdown: (1 - 0.15) = 0.85

The product of all these multipliers is
0.65×0.75×1.18×0.85 = 0.4889625

As you note, $5600×0.4889625 = $2738.19.

Since this multiplier is 1-d, we can find d as
1 - d = 0.4889625
d = 1 - 0.4889625 = 0.5110375
The markdown percentage is this number times 100%:
markdown% ≈ 51.1%

_____
Alternatively, you can work with your final value to find the percentage change from the original.
percent change = ((final value) - (original value))/(original value) × 100%
= (2738.19 - 5600)/5600 × 100%
= -2861.81/5600 × 100%
= -0.5110375 × 100% . . . . . . . this should look familiar
percent change ≈ -51.1%

When the change is negative, it is a markdown (not a markup).
The markdown is 51.1%.

6 0

3 years ago

Slove by dividing to the smallest unit and check your work .What is 28÷2086

Anuta_ua [19.1K]

74.5

you have to switch the numbers for it to be a proper division problem

Hope this helps!

6 0

4 years ago

Read 2 more answers

For ten school days, the numbers of bikes parked at a school bike rack are 10, 12, 8, 11, 13, 9, 2, 1, 9, and 12.

Lapatulllka [165]

The mean number is 8.7 and the outliers 1 and 2 reduce the mean value

<h3>How to determine the mean number?</h3>

The dataset is given as:

10, 12, 8, 11, 13, 9, 2, 1, 9, and 12.

The mean number is calculated using:

Mean = Sum/Count

So, we have:

Mean = (10+ 12+ 8+ 11+ 13+ 9+ 2+ 1+ 9+12)/10

Evaluate

Mean = 8.7

Hence, the mean number is 8.7

<h3>The outlier and how it affects the mean</h3>

Outliers are relatively far from other data elements of the dataset

In the given dataset, 1 and 2 are far from other data element.

So, the outliers are 1 and 2

Because 1 and 2 smaller than other data elements, they affect the mean by reducing the mean value