24cd, 9cd unlike or like terms

1 answer:

6 0

They are like terms. They can be added together or one can be subtracted from the other. The exponents of the variables are the same in both terms.<span />

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Which of the following shows the extraneous solution(s) to the logarithmic equation? log4 (x) + log4(x - 3) = log4 (-7x + 21)

Salsk061 [2.6K]

First join the log4 on the left:

log4( x*(x-3) = log4(-7x+21)

Then x = -7, works: -7*(-10)=70 = -7*(-7)+21

x=-3, 18 = 42, does not work

x=3 0=0 works,

However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.

Now x=3 gives log4(0) on the left and right, which does not exist.

So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation

6 0

3 years ago

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How many students were questioned about the approximate number of text messages they send each day? Explain or

d1i1m1o1n [39]

Do you have anymore information that doesn’t help that much

3 0

3 years ago

Colin’s piano lesson is 45 minutes, or Three-fourths of an hour, long. If he practices 6 different songs and spends an equal amo

NikAS [45]

Answer:

<em>Colin spends 1/8 of an hour practicing each song</em>

Step-by-step explanation:

Colin's piano lesson is 3/4 of an hour, long.

In that period, he practices 6 different songs, spending an equal amount of time on each one.

This means that each song gets the sixth part of the lesson duration. The fraction that expresses that amount is:

$\displaystyle \frac{\frac{3}{4}}{6}=\frac{3}{24}=\frac{1}{8}$

Colin spends 1/8 of an hour practicing each song

5 0

3 years ago

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Analyze Relationships A scale for a scale drawing is 10 cm:1mm. Which is larger, the actual object or the scale drawing: Explain

sleet_krkn [62]

If you're saying that the scale is 10 cm: 1 mm then the scale will be larger than the actual object because for every 1 mm of the object it will equal 10 cm of the scale drawing.

8 0

3 years ago

I got 366 as the answer but my school won’t accept that answer so someone please help me!!!

svetoff [14.1K]

Answer:

V = 381 in³

Step-by-step explanation:

The figure is composed of a rectangular prism and a triangular prism.

The volume (V) of the complete figure is

V = volume of rectangular prism + volume of triangular prism

= (16 × 7 × 3 ) + ( $\frac{1}{2}$ × 3 × 5 × 6 )

= 336 + 45

= 381 in³

4 0

2 years ago