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Elis [28]
3 years ago
6

How do you solve? Help?

Mathematics
1 answer:
Vinvika [58]3 years ago
4 0
Plug in a -20 wherever you see a b
(-20)^2 +4*-20-89/13
400 + -80-89/13
400 - 169/13
400-13
=387

Hope this helps
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#1 Find the slope given the points (3,-20) and (5,8) *
Artyom0805 [142]

Hey there :)

To find the slope with <em>two points</em> we will need to use the equation  \frac{y^2-y^1}{x^2-x^1}

x^1    x^2       y^1  y^2

( 3 , -20 )  ( 5 , 8 )

Here is what the equation should look like when replaced with the numbers (<em>it will be a fraction</em>) :

                                     \frac{8 - (-20)}{5 - 3}

We know that <em>two negatives</em> cancel out and make a positive, so the numerator would actually be 8 + 20.

Solve the fraction and we get   \frac{28}{2}

28 <em>divided</em> by 2 is 14. The slope is 14.

6 0
3 years ago
What is the degree of the polynomial?
neonofarm [45]

Answer:

5

Step-by-step explanation:

6x^2 + 7x^3 + 8x^5 +9

Write in order from highest power to lowest power

8x^5 + 7x^3 + 6x^2  +9

The highest power ( largest exponent) is 5

The degree of the polynomial is 5

6 0
2 years ago
What represents 2 1/4 on a number line
suter [353]
Point c is the point hope this helps
6 0
3 years ago
Alex collects stamps. She has 47 stamps in all. She has 20 stamps from europe. The number of african stapes is 2 times the numbe
ryzh [129]
47=20+(2x+y)
Let x represent the African stamps and y represent the Asian stamps.
4 0
3 years ago
Does anyone know the answer?
kolezko [41]

Answer:

Part A: 9.75x > 195

Part B: x > 20

Step-by-step explanation:

Let's say Mark works for x hours. For each hour he works, 9.75 dollars are added to Mark's salary. Therefore, for 1 hour, he gets $9.75, for 2 hours, he gets $9.75 + $9.75 = $9.75 * 2 = $19.50, and for x hours, he gets $9.75 * x as his salary.

We want his salary to be more than $195, so we have $9.75 * x (his salary) > $195, which can be written as 9.75x > 195

divide both sides by 9.75 to solve for x

x > 20

8 0
2 years ago
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