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3 years ago

+ Scratchpad If 5 pizzas cost $60, how much will 9 pizzas cost?

Mathematics

2 answers:

Klio2033 [76]3 years ago

7 0

Answer:

108

Step-by-step explanation:

marin [14]3 years ago

7 0

Answer:

The cost of 9 pizzas is $108

Step-by-step explanation:

you divide 60 by 5 and multiply that by 9

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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

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

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

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

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

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3 years ago

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Answer:

Step-by-step explanation:

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2 years ago

Which number is a solution of the inequality c > 5? A) 2 B) 2.5 C) 5 D) 6.5

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Answer:

6.5

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the area of the rectangle with points of (-5,5) (-1,7) (0,-5) (4,-3)

Gre4nikov [31]

Answer

l =5

w =2

Area of Rectangle= l × w

= 5 × 2 = 10

Diagram is attached to this:

Step-by-step explanation:

Download pdf

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3 years ago