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grandymaker [24]
3 years ago
13

Can someone please help me with this ASAP!! (will mark as brainliest if correct)

Mathematics
2 answers:
sattari [20]3 years ago
6 0

Answer:

P = 6x-2

x = 14

Step-by-step explanation:

To find the perimeter, we add the sides

P = 4x-8 + 3-2x + 5x+3

Combine like terms

P = 4x-3x+5x  -8+3+3

  = 6x -2

Now we know the perimeter

82 = 6x-2

Add 2 to each side

82+2 = 6x-2+2

84 = 6x

Divide each side by 6

84/6 = 6x/6

14=x

Vladimir [108]3 years ago
3 0

Answer:

A) 7x - 2

B) x = 12

Step-by-step explanation:

4x - 8 + 3 - 2x + 5x + 3

7x - 2

7x - 2 = 82

7x = 84

x = 12

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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
25% of x is 30<br><br>x=? <br>please help!!!​
Nesterboy [21]

25% of 30 can be found by converting 25% to a decimal and multiplying it by 30.

25% = 0.25

30x0.25=7.5

So x is 7.5.

---

hope it helps

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3 years ago
If Mel opens his refrigerator door 36 times every day, about how many times will it be opened in April? Will the exact answer be
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AleksandrR [38]
X = 650 + 60t

The cheetah must arrive at the same place at the same time:

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