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Sergeu [11.5K]
3 years ago
14

I need help plzzzz!!

Mathematics
1 answer:
MAXImum [283]3 years ago
5 0

Answer:

it might be the second one not sure

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This is a proportion. What is the value of X?
Verizon [17]

Answer:

x = 15 or x = - \frac{2}{5}

Step-by-step explanation:

Cross- multiplying gives

(14x + 6)(17x + 5) = 9x(27x + 11) ( expanding factors )

238x² + 172x + 30 = 243x² + 99x

rearrange into standard form : ax² + bx + c = 0

5x² - 73x - 30 = 0 ← in standard form

consider the factors of the product 5 × - 30 = - 150 which sum to the coefficient of the x-term (- 73 )

the factors are - 75 and + 2

Use these factors to split the middle term

5x² - 75x + 2x - 30 = 0 ( factor by grouping )

5x(x - 15) + 2(x - 15) = 0 ← take out the factor (x - 15)

(x - 15)(5x + 2) = 0

equate each factor to zero and solve for x

x - 15 = 0 ⇒ x = 15

5x + 2 = 0 ⇒ x = - \frac{2}{5}


7 0
2 years ago
Which shows one way to determine the factors of x - 9x2 + 5x – 45 by grouping?
EleoNora [17]

Answer:

The last one.

Step-by-step explanation:

6 0
3 years ago
PLEASE HELP ITS MATH ASSAP
zimovet [89]

Answer:-y,x

Step-by-step explanation: It is rotateing into the negative part of a graph if you think about it.

8 0
2 years ago
What is a 90-degree rotation on a graph.
Oksanka [162]
Rotation of a point through 90-degree is about he origin in clockwise direction when point M(h,k) is rotated about the origin O through 90-degree in clockwise direction
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3 years ago
In the figure, j | k and mZ1 = 63" What is the mZ4? Enter your answer in the box​
SIZIF [17.4K]

Answer:

127

Step-by-step explanation:

7 0
3 years ago
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