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3 years ago

X^2-xy-12y^2 Factor the polynomial.

Mathematics

1 answer:

Ivanshal [37]3 years ago

3 0

Your answer will be (x-4y)(x+3y)

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Solve the system of equations using the substitution method.

Delicious77 [7]

Answer:

$x = 14$

$y = -3$

Step-by-step explanation:

Given

$2x + 8y =4$

$x = -3y + 5$

Required

Solve

Substitute $x = -3y + 5$ in $2x + 8y =4$

$2(-3y + 5) + 8y =4$

Open bracket

$-6y + 10 + 8y =4$

Collect like terms

$-6y + 8y =4-10$

$2y =-6$

Divide both sides by 2

$y = -3$

Substitute $y = -3$ in $x = -3y + 5$

$x = -3 * -3 + 5$

$x = 9+ 5$

$x = 14$

8 0

3 years ago

Which polynomial represents the difference below? (7x^2+8)-(4x^2+x+6)

Alex787 [66]

I think the answer is :
3x^2 + 2 - x

i hope this helps :)

6 0

4 years ago

My mom walks 1 mile in 14<br> minutes. If she walked for 56<br> minutes, how far did she walk?

marysya [2.9K]

Answer:

4 miles

Step-by-step explanation

If your mom can walk 1 mile in 14 minutes then 2 miles would take her 28 minutes 3 miles would take her 42 minutes and finally if she walked 4 miles it would take her 56 minutes.

14 + 14 + 14 + 14 = 56

14 x 4 = 56

3 0

3 years ago

(-1 2/3) to the third power

Drupady [299]

Answer:

$-4\dfrac{17}{27}$

Step-by-step explanation:

We are asked to calculate the value of $-1\dfrac{2}{3}$ to the third power.

Now, $(-1\dfrac{2}{3})^{3}$

= $(-\dfrac{5}{3} )^{3}$

= $(-\dfrac{5}{3} ) \times (-\dfrac{5}{3} )\times (-\dfrac{5}{3} )$ { Since we know, a³ = a × a × a }

= $-\dfrac{5^{3} }{3^{3} }$ { Since the product of three negative numbers is also negative }

= $-\frac{125}{27}$

= $-4\dfrac{17}{27}$ ( Answer )

7 0

3 years ago

1.67 percent of 20000

Arturiano [62]

Answer:

The answer is 334

Step-by-step explanation:

.0167 x 20000 = 334

3 0

3 years ago