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2 years ago

Which equation is equivalent to..

Mathematics

1 answer:

svet-max [94.6K]2 years ago

6 0

Answer:

Step-by-step explanation:

$1/3)^{x}$ = $\frac{1}{3^{x} }$ = $3^{-x}$

and

$27^{x+2}$ = $(3^{3})^{x+2}$ = $3^{3(x+2)}$ = $3^{3x+6}$

Hence expression D is equivalent

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Solve the equation 9x² – 29x – 28 = 0 Give your answers to 2 decimal places when appropriate

andrew-mc [135]

Answer:

x = 4 or x = 0.78

Step-by-step explanation:

9x² – 29x – 28 = 0

2 roots: x = ((-(-29) ± √(-29)² - 4 x 9 x (-28)) / (2 x 9)

= (29 ± √841 + 1008) / 18

= (29 ± 43) /18

x = 72 /18 = 4 or

x = -14 /18 = - 0.78

4 0

2 years ago

Can anyone answer this?

defon

Answer:

Ayo its Jose is the only one who was trying to get me to do the thank you usa for the support of the joy luck club the story is about a mother that lost every thing in China and whent to America to start a new life but she make her daughter do something that she don't want to be ninja in and she is not sending her

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1 year ago

The cost of a peanut butter bar is $0.07 more than the cost of a chocolate bar. If you buy 5 peanut butter bars and 6 chocolate

Licemer1 [7]

Hello!

To be quick and simple, your answer would be $0.55

4 0

2 years ago

Is is square root of 1.6875 a rational number

mamaluj [8]

Question:

Is square root of 1.6875 a rational number ?

Answer:

Square root of 1.6875 a rational number is not a rational number

Solution:

Given that we have to find square root of 1.6875 and determine if it is rational number or not

Let us first find square root of 1.6875

$\sqrt{1.6875} = 1.29903810568$

Let us understand about rational number

A rational number is a number that can be expressed as a fraction (ratio) in the form $\frac{p}{q}$ where p and q are integers and q is not zero.

When a rational number fraction is divided to form a decimal value, it becomes a terminating or repeating decimal.

So the number 1.29903810568 is not a rational number

In other words we can say,

Only the square roots of square numbers are rational. Here 1.6875 is not a perfect square. So it is not rational number

4 0

3 years ago

At a construction job for a mall there are 45 painters. Of these painters, 18 of them are painting the interior of the mall. Wha

Jlenok [28]

Answer:

40%

Step-by-step explanation:

18/45 × 100

2/5 × 100

40%

8 0

3 years ago

Read 2 more answers