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3 years ago

Help pls this is for my math test.

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

7 0

Answer:

The answer is D. 14.

Step-by-step explanation:

When you plug in x = 14, it would work, but if you plug in any of the others, it would not.

<h2>PLEASE MARK AS BRAINLIEST!!!!!</h2>

Stells [14]3 years ago

5 0

Answer:

D is the answers for the question

Step-by-step explanation:

please mark me as brainlest

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What is the surface area of a rectangular prism with a height of 8 yd, length of 5.6 yd, and width of 2.3 yd?

sammy [17]

Answer:

152.16 yd²

Step-by-step explanation:

2(8 x 5.6) + 2(8 x 2.3) + (2.3 x 8) = 152.16 yd²

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3 years ago

Find the LCM of the following. A. 28,42,35 B. 48,72,96 C. 36, 44

Ne4ueva [31]

28/2= 14 42/2= 21 35/7= 5

14/ 2= 7 21/3= 7

28= 2^2 × 7

42= 2 × 3 × 7

35= 7 × 5

LCM= 420

48/2= 24. 72/2= 36. 96/3= 32

24/2= 12. 36/3= 12. 32/2= 16

12/3= 4. 12/3= 4. 16/2= 8

4/2= 2. 4/2= 2. 8/2= 4

4/2= 2

48= 2^4 × 3

72= 2^3 × 3^2

96= 2^5 × 3

LCM= 288

36/3= 12. 44/2= 22

12/3= 4. 22/2= 11

4/2= 2

36= 3^2 × 2^2

44= 2^2 × 11

LCM= 396

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2 years ago

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Alexis put $2000 in savings account. After 4 years, she had $2543 in the account. What rate of interest did she earn?

Marizza181 [45]

Answer:

Step-by-step explanation:

Hihi. So, this is a nice application of interest rates as well as properties of exponentials/logarithms. As you know, the basic equation for interest rates is A= Pe^(rt) where A is your final amount, P is your initial, r is your rate of interest, and t is the time the money was accumulating interest. After cleaning up, you get in a situation due to you having e still lying around. Luckily, if you take the natural log of e, all you have left behind is the previous exponent. Thus, you can take the natural log of both sides, divide by 4, and then simplify to see that your final interest rate is ~6%

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3 years ago

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Hey can you please help me posted picture of question

GREYUIT [131]

To solve this problem you must apply the proccedure shown below:

1. You have the following expression:

(3+3i)-(13+15i)

2. If you want to substract both terms, you need to substract the real numbers and the complex numbers. Then, you obtain:

3+3i-13-15i
(3-13)+(3i-15i)

3. Then, you obtain the following result:

-10-12i

4. Therefore, as you can see, the correct answer is the last option (option D), which is:
D. -10-12i

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4 years ago