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PtichkaEL [24]
3 years ago
10

How do I simplify this?

Mathematics
1 answer:
frutty [35]3 years ago
4 0

Answer:

(c)  9x^2.

Step-by-step explanation:

(a) and (b) are correct.

(c)  (3x)^2 = 3^2 * x^2

= 9x^2.

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Answer: 439.82

Step-by-step explanation:

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If two triangles are congruent (as per the given congruency statement), then the corresponding angles of both triangles are also congruent.

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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
Is there anyone who is expert in maths ?I’m in grade 9 can someone help me with maths pls tomorrow is my exam :(
sammy [17]

Answer:

Expert? Sorry, not me, but what sort of questions do you have?

Step-by-step explanation:

7 0
3 years ago
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