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tester [92]
3 years ago
14

Please help me... Everyone is getting this wrong...

Mathematics
2 answers:
Roman55 [17]3 years ago
7 0
i don’t see anything there, i think my phone might be broken?
masya89 [10]3 years ago
5 0
Angle 4 is 137, angle 3 is 43. Your friend might’ve just mixed up the angles and mislabeled them.
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The half-life of caffeine in a healthy adult is 4.8 hours. Jeremiah drinks 18 ounces of caffeinated
statuscvo [17]

We want to see how long will take a healthy adult to reduce the caffeine in his body to a 60%. We will find that the answer is 3.55 hours.

We know that the half-life of caffeine is 4.8 hours, this means that for a given initial quantity of coffee A, after 4.8 hours that quantity reduces to A/2.

So we can define the proportion of coffee that Jeremiah has in his body as:

P(t) = 1*e^{k*t}

Such that:

P(4.8 h) = 0.5 = 1*e^{k*4.8}

Then, if we apply the natural logarithm we get:

Ln(0.5) = Ln(e^{k*4.8})

Ln(0.5) = k*4.8

Ln(0.5)/4.8 = k = -0.144

Then the equation is:

P(t) = 1*e^{-0.144*t}

Now we want to find the time such that the caffeine in his body is the 60% of what he drank that morning, then we must solve:

P(t) = 0.6 =  1*e^{-0.144*t}

Again, we use the natural logarithm:

Ln(0.6) = Ln(e^{-0.144*t})

Ln(0.6) = -0.144*t

Ln(0.6)/-0.144 = t = 3.55

So after 3.55 hours only the 60% of the coffee that he drank that morning will still be in his body.

If you want to learn more, you can read:

brainly.com/question/19599469

7 0
2 years ago
How does this polynomial identity work on numerical relationships?<br> (y + x) (ax + b)
Serggg [28]

Let us take 'a' in the place of 'y' so the equation becomes

(y+x) (ax+b)

Step-by-step explanation:

<u>Step 1:</u>

(a + x) (ax + b)

<u>Step 2: Proof</u>

Checking polynomial identity.

(ax+b )(x+a) = FOIL

(ax+b)(x+a)

ax^2+a^2x is the First Term in the FOIL

ax^2 + a^2x + bx + ab

(ax+b)(x+a)+bx+ab is the Second Term in the FOIL

Add both expressions together from First and Second Term  

= ax^2 + a^2x + bx + ab

<u>Step 3: Proof </u>

(ax+b)(x+a) = ax^2 + a^2x + bx + ab

Identity is Found .

Trying with numbers now

(ax+b)(x+a) = ax^2 + a^2x + bx + ab

((2*5)+8)(5+2) =(2*5^2)+(2^2*5)+(8*5)+(2*8)

((10)+8)(7) =(2*25)+(4*5)+(40)+(16)

(18)(7) =(50)+(20)+(56)

126 =126

3 0
3 years ago
Describe Functions help!!!!
RideAnS [48]
They can be good or bad
5 0
3 years ago
Which expression is equivalent to x6 – 9?
Lorico [155]

Answer:

(x^{3})^{2} -3^{2}

Step-by-step explanation:

we have

x^{6}-9

we know that

x^{6}-9=(x^{3})^{2} -3^{2}

Applying difference of square

(x^{3})^{2} -3^{2}=(x^{3}+3)(x^{3}-3)

7 0
3 years ago
Read 2 more answers
1. (4x2 – 2x+8)+(x² + 3x - 2)
krek1111 [17]

Answer:

I   simplify  it and got 5x^2+z+6

Step-by-step explanation:

(4x2 – 2x+8)+(x² + 3x - 2)v=5x^2+z+6

4 0
3 years ago
Read 2 more answers
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