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3 years ago

Please Help!!! Brainliest will be given!

Mathematics

1 answer:

inn [45]3 years ago

3 0

Answer:

1. C. Yes, because a sum of cubes can be factored

2a. false

2b. false

2c. true

2d. false (based on what is written in the equation; refer to step-by-step)

Step-by-step explanation:

1. Both 3 and 8 can be cubed, which is why x^3+8 can be factored (x+2)(x^2-2x+4)

2a. a^2-b^2 can be factored by the perfect square rule, so it should be (a-b)^2

2b. both terms are perfect squares, so you can factor, making it (a+b)(a-b)

2c. You can factor using the perfect square rule, making it (a+b)^2

2d. Most of what is in the equation is true, yet the correct solution would be (a-b)(a^2+ab+b^2)

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Solve the rational equation 1/(x-2)-1/(x+3) = 1/5

sasho [114]

Answer:

x = 5.09, -6.09.

Step-by-step explanation:

1/(x-2) - 1/(x+3) = 1/5

Multiply through by the LCM 5(x-2)(x+3):

5(x + 3) - 5(x - 2) = (x - 2)(x + 3)

5x + 15 - 5x + 10 = x^2 + x - 6

x^2 + x - 31 = 0

x = [ -1 +/- sqrt(1 - 1*1*31)] / 2

x = 5.09, -6.09.

5 0

4 years ago

Santiago has p peppermints. Mitchell has 63 fewer peppermints than Santiago. Write an expression that shows how many peppermints

Ksju [112]

P-63 ...........................

4 0

3 years ago

Solve to find x and y in the diagram.

Kipish [7]

Considering the given information in the question, the value of x is $12^{o}$ , and that of y is $7.5^{o}$ .

A transversal is a line that cuts through two given parallel lines. Thus it intersects each parallel line at a point, forming four angles each.

From the given information in the question, it can be inferred that:

the given bottom right angle of the first intersection and the bottom right angle with the second intersection are congruent (corresponding angle property).

So that,

$(5x+4y)^{o}$ = $(12y)^{o}$

$5x^{o}$ = $12y^{o}$ - $4y^{o}$

$5x^{o}$ = $8y^{o}$ ............ 1

Also given that the top right angle at the second intersection is a right angle, then;

$12y^{o}$ + $90^{o}$ = $180^{o}$ (sum of angles on a straight line)

This implies that;

$12y^{o}$ = $180^{o}$ - $90^{o}$

$12y^{o}$ = $90^{o}$

So that,

y = $\frac{90}{12}$

y = $7.5^{o}$

Thus substituting the value of y in equation 1, we have;

$5x^{o}$ = $8y^{o}$ ........ 1

= 8(7.5)

5x = 60

x = $\frac{60}{5}$

x = $12^{o}$

Therefore, x = $12^{o}$ and y = $7.5^{o}$

For more clarification on a transversal of two parallel lines, check: brainly.com/question/1751268

#SPJ1

Kindly contact a 1-on-1 tutor if more explanations are needed.

5 0

2 years ago

Which coordinate grid shows the correct locations of P(1, 2.5), point Q, which is a reflection of point P across the y-axis, and

PIT_PIT [208]

The first one does. Hope this helps!

8 0

3 years ago

Read 2 more answers

(PLEASE ANSWER) Drag numbers to complete the equation and find the area of the parallelogram.

8_murik_8 [283]

Answer:

A= 12· 8

= 96 m²

Step-by-step explanation:

4 0

3 years ago