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sweet [91]
2 years ago
8

Find the value of x to 2dp in the equation 2x² + 5x = 9​

Mathematics
1 answer:
ICE Princess25 [194]2 years ago
7 0

Answer:

where x1=-3.71 and x2=1.21

Step-by-step explanation:

<u>first</u><u>=</u><em> </em><em>2</em><em>x</em><em>+</em><em>5</em><em>x</em><em>-</em><em>9</em><em>=</em><em>0</em><em>,</em><em> </em><em> </em><em>a</em><em>=</em><em>2</em><em>,</em><em>b</em><em>=</em><em>5</em><em>,</em><em>c</em><em>=</em><em>-</em><em>9</em><em>,</em><em> </em><em> </em><em>x</em><em>=</em>

<em>\sqrt{ {5 }^{2} } - 4 \times 2( - 9) \: over4</em>

<em>second</em><em> </em><em>x</em><em>=</em>

<em>\sqrt[ - 5 + ]{25 + 72} over4</em>

<em>x</em><em>=</em>

<em>\sqrt[ - 5 +4 ]{97}</em>

<em>\sqrt[ - 5 - 4]{97}</em>

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Solve pls brainliest
kvasek [131]

Answer:

7.5 < 7.5061 < 7.56 < 9.213

Step-by-step explanation:

5 0
3 years ago
Which of the following statements demonstrates the associative property of multiplication?
professor190 [17]
Associative property of multiplication means that it doesn't matter where the parentheses are placed because it will still be the same answer.  

So your answer would be 1, 4 x (3 x 6) = (4 x 3) x 6

I hope this helps! 
6 0
3 years ago
Find x, y, z please help!
ki77a [65]

Answer:

x is 1 y is 1 and a is 1 hope this helped

6 0
3 years ago
The vertices of a rectangle are A(-4,-3) b(-4,-1)C(-1,-1)d(-1,-3)
Vesnalui [34]

Answer:

Step-by-step explanation:

a: A(4,-3) B(4,-1) C(1,-1) D(1,-3)

b: A(-4,3) B(-4,1) C(-1,1) D(-1, 3)

c:yes because you are just changing the direction not the shape or size

4 0
3 years ago
Simplify by factoring. What are the excluded values? Choose all that apply.
makvit [3.9K]

Answer:

x = -2

x = 8

Step-by-step explanation:

Excluded values are the ones which make the denominator zero

3x² + x - 10

3x² + 6x - 5x - 10

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(x + 2)(3x - 5)

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x(x - 8) + 2(x - 8)

(x - 8)(x + 2)

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(3x - 5)/(x - 8)

So excluded values are 8, -2

6 0
3 years ago
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