3 years ago

Solve for x. 5(x + 1) = 4(x + 8) O x = 37 O x = 17 O x = 7 O x = 27

Mathematics

1 answer:

mario62 [17]3 years ago

7 0

Answer:

Step-by-step explanation:

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What are the factors of the trinomial x^2+6x-7

zysi [14]

X^2 + 6x - 7 =
(x + 7)(x - 1)

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3 years ago

The coordinates of Point A are (6,3). Point B is a reflection of Point A across the y axis. In which Quadrant is point B located

Ksju [112]

point B is located in quadrant II (option B)

Explanation:

Point A: (6, 3) = (x, y)

reflection of point A across the y axis:

The x coordinate will be negative and the y coordinate will remain the same

reflection of point A across the y axis = (-6, 3)

Attaching the graph showing the point after reflection:

Since point B is the reflection of point A.

Hence, point B is located in quadrant II (option B)

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dante's mom will bake chocolate chip cookies for the children making snowman outside! she bake 60 cookies. Each child must have

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Each child will get 6 cookies.

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Read 2 more answers

Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

The equation is
$3 {x}^{2} = - 12x - 15$

We rewrite the above equation to obtain;

$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

${x}^{2} + 4x = - 5$

We add half the coefficient of
$x$

to both sides of the equation to get,

${x}^{2} + 4x + {2}^{2} = - 5 + {2}^{2}$

The right hand side is now a perfect square.

${(x + 2)}^{2} = - 1$

We now take square root of both sides to get;

$x + 2 = \pm \sqrt{ - 1}$

We add -2 to both sides,

$x = - 2 \pm \sqrt{ - 1}$

We simplify to obtain,

$x = - 2 \pm i$

3 0

3 years ago

Why is 3 + (−5) equal to −2?

algol13

Because it is 5 units to the left of 3 on a horizontal number line

4 0

3 years ago