All categories

2 years ago

Evaluate the following expression when X=-4 and Y=4

Mathematics

2 answers:

gavmur [86]2 years ago

8 0

Answer:

256.25

Step-by-step explanation:

$\dfrac{x^6 - x}{4y} =$

$= \dfrac{(4)^6 - (-4)}{4(4)}$

$= \dfrac{4096 + 4}{16}$

$= \dfrac{4100}{16}$

$= 256.25$

goldfiish [28.3K]2 years ago

4 0

Answer: y = x^{2} - 16

Step-by-step explanation: Work backwards to find the factors from the root, then multiply the factors together.

You might be interested in

Expand.<br> Your answer should be a polynomial in standard form.<br> (3c + 2)(c^2-6c-4)

evablogger [386]

Answer:

After expanding the polynomial $(3c + 2)(c^2-6c-4)$ we get $3c^3-16c^2-24c-8$

Step-by-step explanation:

We need to expand the polynomial $(3c + 2)(c^2-6c-4)$

Multiply the terms:

$(3c + 2)(c^2-6c-4)\\=3c(c^2-6c-4)+2(c^2-6c-4)\\=3c^3-18c^2-12c+2c^2-12c-8\\=3c^3-18c^2+2c^2-12c-12c-8\\=3c^3-16c^2-24c-8$

So, after expanding the polynomial $(3c + 2)(c^2-6c-4)$ we get $3c^3-16c^2-24c-8$

3 0

2 years ago

What dose this equal -7/8+(-5/8)

Levart [38]

Answer:

-12/8 or -1.5

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Brian and Steve want to compare the prices of their favorite cereals to determine which is less expensive. Figure out the price

Andrews [41]

Me being a junior in high school and not knowing middle school math

8 0

2 years ago

Read 2 more answers

Lucy has to run two errands. She starts from home and travels 3 miles south to the post office. From the post office, she travel

Gwar [14]

Answer:

A. It is at the gas station

Step-by-step explanation:

3 0

2 years ago

Multiply or divide as indicated. x^-8 • x^-2

gladu [14]

ANSWER

$\frac{1}{ {x}^{10} }$

EXPLANATION

The given exponentiial expression is

${x}^{ - 8} \bullet {x}^{ - 2}$

We simplify using the rule:

${a}^{m} \times {a}^{n} = {a}^{m + n}$

We apply this property to get:

${x}^{ - 8} \bullet {x}^{ - 2} = {x}^{ - 8 + - 2}$

We simplify to get;

${x}^{ - 8} \bullet {x}^{ - 2} = {x}^{ - 10}$

We rewrite as a positive index to get;

${x}^{ - 8} \bullet {x}^{ - 2} = \frac{1}{ {x}^{10} }$

7 0

2 years ago