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Alenkinab [10]
2 years ago
6

Solve each system by elimination 7x + 8y = -29 -3x -8y = 17

Mathematics
1 answer:
alexgriva [62]2 years ago
3 0
4x=-12
x= -3
Now that we know the value of x we plug that value into the first equation to solve for y
7(-3) +8y=-29
-21+8y= -29
8y=-8
y= -1
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When factored completely the expression p^4-81 is equivalent to
spayn [35]
   
\displaystyle\\
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=\Big(p^2+3^2\Big)\Big(p^2-3^2\Big)=\\\\
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7 0
2 years ago
Chase consumes an energy drink that contains caffeine. After consuming the energy drink, the amount of caffeine in Chase's body
PIT_PIT [208]

Answer:

(a) The 5-hour decay factor is 0.5042.

(b) The 1-hour decay factor is 0.8720.

(c) The amount of caffeine in Chase's body 2.39 hours after consuming the drink is 149.112 mg.

Step-by-step explanation:

The amount of caffeine in Chase's body decreases exponentially.

The 10-hour decay factor for the number of mg of caffeine is 0.2542.

The 1-hour decay factor is:

1-hour\ decay\ factor=(0.2542)^{1/10}=0.8720

(a)

Compute the 5-hour decay factor as follows:

5-hour\ decay\ factor=(0.8720)^{5}\\=0.504176\\\approx0.5042

Thus, the 5-hour decay factor is 0.5042.

(b)

The 1-hour decay factor is:

1-hour\ decay\ factor=(0.2542)^{1/10}=0.8720

Thus, the 1-hour decay factor is 0.8720.

(c)

The equation to compute the amount of caffeine in Chase's body is:

A = Initial amount × (0.8720)<em>ⁿ</em>

It is provided that initially Chase had 171 mg of caffeine, 1.39 hours after consuming the drink.

Compute the amount of caffeine in Chase's body 2.39 hours after consuming the drink as follows:

A = Initial\ amount \times (0.8720)^{2.39} \\=[Initial\ amount \times (0.8720)^{1.39}] \times(0.8720)\\=171\times 0.8720\\=149.112

Thus, the amount of caffeine in Chase's body 2.39 hours after consuming the drink is 149.112 mg.

4 0
2 years ago
6. Which of the following is a true statement? (1 point) A trapezoid is a type of parallelogram. A trapezoid is a type of quadri
steposvetlana [31]
Its a quadrilateral. Because I googled it. 
5 0
3 years ago
Read 2 more answers
I don’t understand how this works?<br> Please help, thanks.
Dima020 [189]

Answer:

(B) Is the answer here

Step-by-step explanation:

Well a function’s domain can’t repeat no matter what.

Domain is X.

So the first one doesnt work since it repeats to every single digit that exists.

The second one works becuase the domain aren’t repeated and the range being repeated (or known as y) is but that deosn’t matter.

6 0
3 years ago
Read 2 more answers
Help brainliest if all’ answers are correct if not report answer all’ questions plz<br> (10 points)
Naya [18.7K]
2. 11 2/16 that’s for answers number 2
3 0
2 years ago
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