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2 years ago

Does anyone know the answer to any of these

Mathematics

1 answer:

Anna11 [10]2 years ago

7 0

Answer:

nvkjvdvjd

Step-by-step explanation:

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Find the percent of increase from 20 to 45.

Aloiza [94]

It is a 125% increase from 20 to 45

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2 years ago

Read 2 more answers

Factor this expression completely, then place the factors in the proper location on the grid. 9x2 - y2

andreev551 [17]

Answer:

${ \tt{ {9x}^{2} - {y}^{2} }} \\ = { \tt{( {3x)}^{2} - {y}^{2} }} \\ = { \tt{(3x - y)(3x + y)}}$

6 0

2 years ago

One more question, sorry can someone please help?

CaHeK987 [17]

Answer:B

Step-by-step explanation:

Honestly when I did the math I got closest to b so I think it's B hope his helps

8 0

2 years ago

A donut shop is experimenting with two new types of cream-filled treats, one with raspberry filling, and the other with peach. A

defon

Step-by-step explanation:

X= raspberry

X = 600 ÷ 11 = 54 batches

[ 60 minutes = 1 hour]

[600 minutes = 10 hours]

Y = peach

Y = 600 ÷ 8 = 75 batches

7 0

3 years ago

Which of the following is an extraneous solution of (45-3x)^1/2=x-9?

Iteru [2.4K]

Answer:

C. x =3

Step-by-step explanation:

Extraneous solution is that root of a transformed equation that doesn't satisfy the equation in it's original form because it was excluded from the domain of the original equation.

Let's solve the equation first

$\sqrt{45-3x} = x-9\\Taking\ square\ on\ both\ sides\\{(\sqrt{45-3x})}^2 = {(x-9)}^2\\45-3x = x^2-18x+81\\0 = x^2-18x+81-45+3x\\x^2-15x+36 = 0\\x^2-12x-3x+36 = 0\\x(x-12)-3(x-12) = 0\\(x-3)(x-12)\\x-3 = 0\\=> x =3\\x-12 = 0\\x = 12\\We\ will\ check\ the\ solutions\ one\ by\ one\\So,\\for\ x=3\\\sqrt{45-3(3)} = 3-9\\\sqrt{45-9} = -6\\\sqrt{36}= -6\\6\neq -6\\For x=12\\\sqrt{45-3(12)} = 12-9\\\sqrt{45-36} = 6\\\sqrt{36}= 6\\6=6$

Hence, we can conclude that x=3 is an extraneous solution of the equation ..

3 0

3 years ago