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GarryVolchara [31]
2 years ago
15

The difference of seven times a number and four is eighty. Find the number.

Mathematics
1 answer:
Taya2010 [7]2 years ago
7 0

Answer: 12

Step-by-step explanation:

difference = subtraction

and = addition

times = multiplication

Therefore,

7x - 4 = 80

7x = 84

x = 12

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Evaluate the expression: 81 / 9 + (5 with the exponet of 2- 6.7) - 12
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2.99948138 is the answer ur welcome
3 0
3 years ago
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Rewrite each expression as a polynomial in standard form: (2x^2 − x^3 − 9x +1) − (x^3 +7x − 3x^2 +1)
Vitek1552 [10]

Answer:

Polynomial in standard form will be -2x^3+5x^2-16x

Step-by-step explanation:

We have given polynomial 2x^2-x^3-9x+1-(x^3+7x-3x^2+1)

We have to write this polynomial in standard form

For writing in standard form we have to first subtract the polynomial and then rearrange the order

So 2x^2-x^3-9x+1-(x^3+7x-3x^2+1)=2x^2-x^3-9x+1-x^3-7x+3x^2-1=-2x^3+5x^2-16x

So polynomial in standard form will be -2x^3+5x^2-16x

8 0
3 years ago
A mountain climber climed down 20 feet at a time he did this 5 times in one day what was tge overall change in his elevation
AfilCa [17]

Answer:

- 100

Step-by-step explanation:

20 x 5 = 100

It's -100 because he's going down

8 0
1 year ago
In the diagram, the segment x units long is tangent to the circle. Solve for x.
Goryan [66]
X = sqrt((5 + 6)^2 - 5^2) = sqrt(11^2 - 5^2) = sqrt(121 - 25) = sqrt(96) = 9.8
8 0
3 years ago
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He following stem-and-leaf plot represents the test scores for 26 students in a class on their most recent test. Use the data pr
adelina 88 [10]

Considering the given stem-and-left plot, the median = second quaritle of the data set is of 84.5.

<h3>What is the median of a data-set?</h3>

The median of a data-set is the 50th percentile, that is, the value that separates the bottom 50% of scores from the upper 50% of scores.

This data-set has even cardinality of 26, hence the median is the mean of the 13th and 14th scores, which, considering the key for the stem-and-leaf plot, are 84 and 85, hence:

Me = (84 + 85)/2 = 84.5.

More can be learned about the median of a data-set at brainly.com/question/23923146

#SPJ1

6 0
2 years ago
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