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d1i1m1o1n [39]
3 years ago
10

align="absmiddle" class="latex-formula"> = -2
Mathematics
2 answers:
Bingel [31]3 years ago
7 0
\frac{y - 1}{4}  = -2 \\  \\   \frac{y - 1}{4}  * 4 = -2 *4 \\  \\ y - 1 = -8 \\  \\ y - 1 +1 = -8 +1 \\  \\ y = -7
Stells [14]3 years ago
4 0
Remember
you can do anything to an equation as long as you do it to both sides

and
a/b times b=a since b's cancel out
and
a-a=0
we hates fraction
times both sides by 4
4(y-1)/4=-8
4/4(y-1)=-8
1(y-1)=-8
y-1=-8
add 1
y+1-1=-8+1
y+0=-7
y=-7
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Question 17
Rufina [12.5K]

Answer:

698 fishes

Step-by-step explanation:

Generally, we can represent an exponential growth function as;

y = a•(1 + r)^t

originally, there were 3 fishes

The original value in this case means a = 3

After 6 weeks, there were 31

31 in this case is y

r is the increase percentage or rate

t is the time

So, we have it that;

31 = 3•(1 + r)^6

31/3 = (1 + r)^6

10.33 = (1 + r)^6

ln 10.33 = 6 ln (1 + r)

ln 10.33/6 = ln (1 + r)

e^0.3892 = (1 + r)

1 + r = 1.476

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r = 0.476 or 47.6%

So the growth percentage or rate is 47.6%

For 14 weeks, we simply have the value of t as 14;

So ;

y = 3•(1 + 0.476)^14

y = 3(1.476)^14

y = 698 fishes

8 0
3 years ago
What is the p(3,1,2) on rolls of a die
Anna35 [415]
Number 3 is 1/6 to role a 1 on the second roll is 1/36= 1/6 X 1/6
to get 2 on the third role is 1/216 so the probability is 1/216 
3 0
3 years ago
What's 19 to the power of 63? Brain fart-
iVinArrow [24]

Answer:

2.5782963e+29

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6 0
2 years ago
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Vlad1618 [11]

Answer:

By comparison of the sides.

Step-by-step explanation:

If triangles are similar, that means their angles are equal and sides are proportional.

If you already have a proportion of two corresponding sides between triangles, then use that proportion and set it equal to a side you already know the measurement to. Hopefully that side is corresponding to your missing measurement, and you can then solve it.

8 0
3 years ago
What is the solution to this equation?<br> 4x + 2(x + 6) = 36
Illusion [34]

Answer:

x=4

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7 0
3 years ago
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