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xz_007 [3.2K]
3 years ago
11

What is -3x - 9 + 15x

Mathematics
1 answer:
likoan [24]3 years ago
7 0

Add −3x and 15x.

12x−9

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A bacteria culture initially contains 100 cells and grows at a rate proportional to its size. After an hour the population has i
Assoli18 [71]

Step-by-step explanation:

Rate of growth equals 420/100 = 4.2 times per hour

So after t=three hours,

size of culture = 100*(4.2)^t = 100*4.2^3=7408.8 bacteria,

round to nearest unit 7409 bacteria after three hours (after initial size of 100).

8 0
3 years ago
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Find the common ratio and the next term for the sequence shown. Express your answers as fractions or as decimals.
Cerrena [4.2K]
The common ratio of the sequence is calculated by dividing the second term by the first term or dividing the third term by the second term. That is,
                               r = 250 / 333 = 0.75
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3 years ago
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Which of the following is the solution set of -2|x| < -8
liraira [26]

-2|x|<-8

(-2|x|)/-2<-8/-2

|x|>4

x>4 or x>-4

Solution: ] -♾️ , -4 [ U ] 4 , + ♾️ [

PLEASE GIVE BRAINLIEST

6 0
2 years ago
PLEAS HELP FAST !!<br><br> solve the equation below. please include the steps. <br><br> x^2+8x+15=0
Nataliya [291]
(x + 5)(x + 3)
x+5=0, solve it and you get -5.
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The answers are -5 and -3.
4 0
3 years ago
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I GIVEEEDDE BRAINLILSTTT
Natasha_Volkova [10]

Answer:

\frac{1}{5}

Step-by-step explanation:

To find the scale factor of a dilation, we first find two corresponding sides. For example, the top edge of the black shape corresponds with the top edge of the purple shape. The top edge of the black shape measures 15 units while the top edge of the purple shape measures 3 units

Now, we divide the length taken from the figure by the length taken from the original shape. In this case, we divide the length of 3 by the length of 15.

3/15=\frac{1}{5}

I hope this helps!

5 0
3 years ago
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