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2 years ago

I've been stuck on these questions for a while now. Can I get some help?

Mathematics

1 answer:

Anna [14]2 years ago

7 0

Answer:

the answers are pictured

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I NEED URGENT ASSISTANCE

Nata [24]

Answer:

8 C sometimes

9 64x^8 y^11

10 c 1.28r^2/ t^9

Step-by-step explanation:

Algebraic Operations

Some basic rules must be fresh in our minds when trying to simplify complex algebraic expressions. For example, the power rule respect to the product or quotient:

$\displaystyle \left(\frac{x^n.y^m}{z^p}\right)^q= \frac{x^{qn}.y^{qm}}{z^{qp}}$

$\displaystyle \frac{x^n.x^q}{x^p}= x^{n+q-p}$

$\displaystyle x^{-n}=\frac{1}{x^n}$

Let's face the questions at hand

8. A number is raised to a negative exponent is negative?

Following the expressions recalled above, let's pick the expression

$\displaystyle 3^{-2}=\frac{1}{3^2}=\frac{1}{9}$

This is a negative power resulting in a positive number

Now we pick

$\displaystyle (-2)^{-3}=\frac{1}{(-2)^3}=-\frac{1}{8}$

This time, the negative power leads to a negative result, so it doesn't matter the sign of exponent to determine the sign of the result

Answer: C sometimes

9 simplify(4xy^2)^3(xy)^5

$(4xy^2)^3(xy)^5=4^3x^3(y^2)^3x^5y^5$

$=64x^3y^6x^5y^5$

$=64x^8y^{11}$

10 simplify(2t^-3)^3(0.4r)^2

$(2t^{-3})^3(0.4r)^2=2^3(t^{-3})^30.4^2r^2$

$=8t^{-9} 0.16 r^2$

$=1.28t^{-9} r^2$

$\displaystyle \frac{1.28 r^2}{t^9}$

7 0

3 years ago

Label x-intercepts, vertex and axis of symmetry for f(x) = (x+3)(x-5)

Lera25 [3.4K]

X intercepts are -3 and 5

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2 years ago

Find the slope-intercept form between the two points (0,-4) and (-3,-10) * 2 points Your answer

sattari [20]

Answer:

Y=2x-4

Step-by-step explanation:

3 0

2 years ago

What is the ratio of 72/80

RSB [31]

72:80
9:10

Divide 72 and 80 by 8 to simplify it and get the ratio

7 0

3 years ago

Read 2 more answers

Jaden buys a raffle ticket. Each ticket has a 1% chance of being drawn. How likely is it that Jaden's ticket will be drawn? It d

Reika [66]

When Jaden bought the raffle ticket, he has a 1% chance of winning, which means that even if the chance is small, it's still there.

Your answer would be

It likely won't be drawn.

3 0

3 years ago