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Contact [7]
1 year ago
12

class="latex-formula">
Mathematics
2 answers:
Kruka [31]1 year ago
6 0

Answer:

<h2>10+2x=4</h2>

first, by using inverse operations subtract 10 on both sides.

<h2>10-10+2x=4-10</h2>

4-10 is -6. whys the 6 negative? because the number takes the sign of the bigge number.

<h2>2x=-6</h2>

Divide by 2 to isolate x

<h2>2x÷2=-6÷2</h2>

In multiplication and division one negative sign stays and 2 negative signs cancel eachother but here theres only one negative sign so;

~~~~~~~~~~~~~~~~

<h2>X=-3</h2>

Pachacha [2.7K]1 year ago
4 0
10 + 2x = 4
-10
2x = -6
/2
x = -3

Answer: x = -3
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Round 90998.0014483 to the nearest ten
svp [43]
Ten: 91000

tenth: 90998.00


hope this helps
3 0
4 years ago
9000 dollars is placed in an account with annual interest rate of 7.75 how much will be in the account in 18 year nearest cent
ludmilkaskok [199]

Answer:

9139.50

Step-by-step explanation:

since it didn't mention any withdraws from the account or any charges, its just a matter of multiplying 7.75 by 18 and adding it to the original balance.

8 0
2 years ago
Read 2 more answers
Suppose that the scores of a history test are normally distributed with a mean of 565 and a standard deviation of 113. a) What p
zvonat [6]

Answer:

15.39% of the scores are less than 450

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 565, \sigma = 113

What percentage of the scores are less than 450?

This is the pvalue of Z when X = 450. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{450 - 565}{113}

Z = -1.02

Z = -1.02 has a pvalue of 0.1539

15.39% of the scores are less than 450

6 0
4 years ago
EXTRA POINTS * how do you graph y=2x + 1
ahrayia [7]

Step-by-step explanation:

first u need to pick a random coordinate to substitute the X . example 0

y = 2(0) + 1

y =1 , X= 0

X= 1

y= 2(1) + 1

y= 3, X= 1

then you continue this same process and again until u have at least two points to draw a straight line. it kinda depended if u want to fill the entire graph.

3 0
4 years ago
jim had 20 to spend at the video rental he has a late fee of 4.00 and it will cost him 2.99 to rent each movie not including tax
Anastasy [175]

Answer:

2.99m-4 (less than or equal to symbol after) 20

Step-by-step explanation:

This would come out too 5 movies because 20-4= 16 16-2.99=5.3 but it is impossible to buy 5.3 movies so you would round it down to 5

8 0
3 years ago
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