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konstantin123 [22]
3 years ago
9

Expand the single bracket 9(7 – b)

Mathematics
2 answers:
wolverine [178]3 years ago
8 0

Answer:

63-9b

Step-by-step explanation:

9(7-b)

=9×7-9×b

=63-9b

nlexa [21]3 years ago
5 0

Answer:

63-9b

Step-by-step explanation:

9 x 7= 63

9 x b= 9b

63-9b

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A particular type of cell increases by 75% in number every hour. Find the number of cells present at the end of 12 hours if ther
prisoha [69]

We have been given that a particular type of cell increases by 75% in number every hour. We are asked to find the number of cells present at the end of 12 hours if there are initially 4 of these cells.

We will use exponential growth formula to solve our given problem.

y=a\cdot (1+r)^x, where,

y = Final amount,

a = Initial amount,

r = Growth rate in decimal form,

x = Time.

75\%=\frac{75}{100}=0.75

Upon substituting initial value a=4 and x=12 in above formula, we will get:

y=4\cdot (1+0.75)^{12}

y=4\cdot (1.75)^{12}

y=4\cdot 825.0050068497657776

y=3300.020027

y\approx 3300

Therefore, there will be approximately 3300 cells at the end of 12 hours.

5 0
3 years ago
I need help please???
goblinko [34]

option 4 .x<11 is the correct answer

4 0
2 years ago
PLEASE HELP!
Luba_88 [7]
2x - 2y = 2

2x - 2 x 0 = 2

2x - 0 = 2

2x = 2

x = 1

2x - 2y = 2

2 x 0 - 2y = 2

y = - 1
3 0
3 years ago
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PLEASE HELP ME NOW! THIS IS DUE AND I NEED HELP, please and thank you.
GaryK [48]
Hfdjuggb 77₽+I /2-1₽5
3 0
2 years ago
Y + 1 1/6 = 7 5/6 what is Y​
AfilCa [17]

Answer:

6\frac{2}{3}

Step-by-step explanation:

y + 1\frac{1}{6} = 7\frac{5}{6}

y + \frac{7}{6} = \frac{47}{6}

y = 40/6 = 20/3 = 6\frac{2}{3}

3 0
3 years ago
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