2 years ago

Using the data provided, what percent of the sampled streams are polluted?

Mathematics

1 answer:

bija089 [108]2 years ago

8 0

Answer:

D. 25%

Step-by-step explanation:

5/20
10/40

15/60

Are all equal to 1/4 or 0.25

To write it as percentage, we times by 100

0.25×100=25%

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Dicriminant of x² – 49 = 0

Mama L [17]

Answer:

196

Step-by-step explanation:

The discriminant (Δ) is given by:

$\Delta = b^2-4ac$

Where the polynomial is in the form:

$ax^2+bx+c=0$

In this problem, a = 1, b = 0, and c = -49. Thus, plugging it into the formula:

$\Delta = 0^2-4(1)(-49) = -(-196) = 196$

Thus, the discriminant of x² – 49 = 0 is 196.

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3 years ago

What is the area of the figure?<br> Enter your answer in the box.<br><br> in²

Lubov Fominskaja [6]

First, we find the area of the triangle is 12 in. Square. Then, we find the area of the square is 100 square inches. Finally, we add it together to have 112 square inches.

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3 years ago

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1. What is the solution to the compound inequality 85 < 17m <136?

lianna [129]

Answer:

The answer is B

Step-by-step explanation:

You have to seperate the inequalities into 2 :

$85 < 17m$

$17m < 136$

Then you have to solve it :

$85 < 17m$

$85 \div 17 < m$

$5 < m$

$m > 5$

$17m < 136$

$m < 136 \div 17$

$m < 8$

3 0

4 years ago

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The following statements is are true regarding the figure above

Andreyy89

Answer:

a and b

Step-by-step explanation:

it is a point and a point is a zero demensional object.

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3 years ago

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Given isosceles AHIJ where HIIT, MZH = (3x + 10)", and mZ1 = (6x – 20)", find the measures of angles H, I and J.

sergejj [24]

Answer:

110 degrees I think

Step-by-step explanation:

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3 years ago