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2 years ago

Whats the slope of this graph??

Mathematics

1 answer:

Rashid [163]2 years ago

7 0

You can find the slope by either counting it on the graph or using two points and the slope formula.

By counting on the graph the slope is -1/2

By using the slope formula:

-2-0/4-0 = 4/-2 = 1/-2
Hence, the slope is same the both ways :)

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What is the value of 3 ^ -3

mestny [16]

Answer:

$\frac{1}{27}$

Step-by-step explanation:

$3^{-3}\\=\frac{1}{3}^{3}\\=\frac{1}{27}$

5 0

3 years ago

If (9x − 4)(9x + 4) = ax² − b, what is the value of a? (5 points)

lions [1.4K]

Given, (9x - 4)(9x + 4) = ax² - b

From algebraic identities:

We know, (a + b)(a - b) = a² - b²

Now, 81x² + 36x - 36x - 16 = ax² - b

81x² - 16 = axis² - b

So ax² = 81x²

a = 81

-b = -16

b = 16

Solution

Therefore, the value of a is 81.

<h2>MyHeritage</h2>

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2 years ago

Read 2 more answers

Solve for x.<br> 2x² +21x-61 = (x+7)²<br><br> Please

Ymorist [56]

Answer:

$x = \frac{-7 +\sqrt{489} }{2}$

$x = \frac{-7 - \sqrt{489} }{2}$

Step-by-step explanation:

2x² +21x-61 = (x+7)²

expand

2x² + 21x - 61 = x² + 14x +49

move everything to one side

x² + 7x - 12 = 0

use quadratic formula

$x = \frac{-b +- \sqrt{b^{2}-4ac } }{2a}$

plug in the values

$x = \frac{-7 +- \sqrt{7^{2}-4(1)(-110) } }{2(1)}$

solve

$x = \frac{-7 +- \sqrt{49-4(1)(-110) } }{2}$

$x = \frac{-7 +- \sqrt{49 + 440 } }{2}$

$x = \frac{-7 +- \sqrt{489} }{2}$

7 0

1 year ago

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Solve the proportion.<br> 1<br> 4<br> Z/20

DedPeter [7]

Answer:

1/4=z/20. This deals with adding, subtracting and finding the least common multiple. Overview; Steps; Topics Terms and topics;

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2 years ago

2/9 g =-8

Rasek [7]

Answer:

-8

Step-by-step explanation:

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2 years ago