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Nataly_w [17]
3 years ago
5

Find the slop from the given equation. 2x + 4y + 7 = 0

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
6 0

The slope of the line would be -1/2.

To find the slope we need to make the line in the form y = mx + b:

2x + 4y + 7 = 0

2x + 4y = -7

4y = -2x - 7

÷ 4

y = (-2/4)x - (7/4)

-2/4 simplifies to -1/2.

I hope this helps!


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which of the following is the equation of the line that passes though the point (-2,1) and has a slope of 4
Ierofanga [76]

An equation that goes through (-2, 1) and has a slope of 4 is y = 4x + 9.


You can find this by looking for the y-intercept (b) by using the slope (m), the point and slope intercept form. The work is below for you.


y = mx + b

1 = 4(-2) + b

1 = -8 + b

9 = b


Now we can use that and the slope to create the equation y = 4x + 9

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Find the amount of tax and the tax rate. Round to nearest hundredth of a percent.
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since the selling price is 89.83 and the cost of is 76, the tax amount is 89.83 - 76 = 13.83.

if we take 76 to be the 100%, what is 13.83 off of it in percentage?

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2 years ago
Principal Lopez asked her 500 students to vote on the school's annual gift. 300 students voted to donate a telescope for the sci
Maksim231197 [3]

Using the percentage concept, it is found that 60% of the students voted to donate a telescope.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

P = \frac{a}{b} \times 100\%

In this problem:

  • The total amount is the number of students, which is of b = 500.
  • 300 voted to donate, hence a = 300.

The <em>percentage </em>is given by:

P = \frac{300}{500} \times 100\% = 60\%

60% of the students voted to donate a telescope.

More can be learned about the percentage concept at brainly.com/question/10491646

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olganol [36]

Answer:Thomas Edison was an amazing inventor.

Step-by-step explanation:

the best option and got 100

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Andreyy89

Answer:

23

Step-by-step explanation:

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