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3 years ago

Which pair shows equivalent expressions?

Mathematics

1 answer:

AVprozaik [17]3 years ago

3 0

The 3rd one because the rest you would have to distribute them and for the 3rd one it’s the same

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Match the real-world problem to its constant of proportionality.

BabaBlast [244]

Answer:

a. $18.36 for 3 pizzas : k = 6.12

b. $4.17 for 3 pounds of bananas . k = 1.39

c. $16.48 for 4 pounds of potatoes . k = 4.12

d. 2 cups of flour to make 24 cookie . k = 2

Step-by-step explanation:

<u>PROPORTIONALITY:</u>

Two quantities x and y are said to proportional to each other

if for x ∝ y , x = y k.

Here, k i s called the PROPORTIONALITY CONSTANT.

⇒ $x \propto y \implies k = \frac{x}{y}$

Now, for the given quantities:

a. $18.36 for 3 pizzas [box]

Here, $k = \frac{18.36}{3} = 6.12$

So, the proportionality constant is 6.12.

b. $4.17 for 3 pounds of bananas [box]

Here, $k = \frac{4.17}{3} = 1.39$

So, the proportionality constant is 1.39.

c. $16.48 for 4 pounds of potatoes [box]

Here, $k = \frac{16.48}{4} = 4.12$

So, the proportionality constant is 4.12.

d. 2 cups of flour to make 24 cookies

Here, $k = \frac{24}{2} = 12$

So, the proportionality constant is 12

6 0

4 years ago

Inez Alexander has a car loan of $425 per month at 5.5% annual interest rate. She would like to pay off the car one year early.

Kitty [74]

The formula of the present value of annuity ordinary is
Pv=pmt [(1-(1+r/k)^(-kn))÷( r/k)]
Pv present value?
PMT monthly payment 425
R interest rate 0.055
K compounded monthly 12
T time 1 year

Pv=425×((1−(1+0.055÷12)^(
−12))÷(0.055÷12))
=4,951.26

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3 years ago

Target offered a 40% discount off the original

Setler [38]

Answer:

jdbfdbgfdugdvudh

Step-by-step explanation:

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3 years ago

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I need help to pass my mathematical test. What is 0+0?

NISA [10]