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Maurinko [17]
3 years ago
14

Simplify the polynomial 4x^2 + 4 - 5x + x - 2x^2 + 8

Mathematics
1 answer:
Alexus [3.1K]3 years ago
3 0
Simplified
2x^2 - 4x + 12
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Use the elimination method to solve the system of equations. Choose the correct ordered pair. 2y = x + 2 x - 3y= -5 O A. (2, 2)
Lina20 [59]

Answer:

correct answers: 2 question: Solve the given system of equations using any method and then choose the correct ordered pair from the given choices: x + y = 33x - y ... Select one: O a. (2.1) O b.(-2,-1) O c. (1,2) O d. (-1,2)​. answer. Answers: 2. Get ... Asine function has the following period =4 amplitude = 4 midline y = 1.

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6 0
3 years ago
Marcus bought pumpkins that weigh 8 lb, 11 lb, 23 lb, and 15 lb. What is the mean weight of his pumpkins? Round to the nearest t
OverLord2011 [107]

In this question, it is given that

Marcus bought pumpkins that weigh 8 lb, 11 lb, 23 lb, and 15 lb.

And we have to find the mean weight .

To find the mean weight, we will first add all the weights, then divide them by number of pumpkins which is 4.

So the mean weight is

Mean \ weight = \frac{8+11+23 +15}{4} = \frac{57}{4} = 14.25 lb

Therefore the mean weight is 14.25 lb .

3 0
4 years ago
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The compound amount of rupees 5000 for 3 years is rupees 8500. find the compound interest.​
sdas [7]

Answer:

Compound interest amount=3,500 rupees

Step-by-step explanation:

The compound interest amount after a given number of years can be represented by the formula below;  

Compound interest amount =A-P

where;

A=P(1+r/n)^nt=Future value of investment or loan

P=Initial value of investment or loan

r=Annual interest rate

n=Number of periods per unit time, t

t=Number of years the investment is compounded

In our case;

A=8,500

P=5,000

replacing;

Compound Interest=Total compounded amount after 3 years-Initial amount

Compound interest=(8,500-5,000)=3,500

Compound interest amount=3,500 rupees

8 0
4 years ago
A student records the repair cost for 17 randomly selected stereos. A sample mean of $52.33 and standard deviation of $21.44 are
Dafna11 [192]

Answer:

90% confidence interval is (43.25, 61.41)

Step-by-step explanation:

Given that,

n = 17

Mean, \bar{x} = 52.33

Standard deviation, \sigma = 21.44

∝ = 0.10

Now,

Confidence interval = \bar{x}  ± t_{\frac{\alpha }{2}, n-1} [\frac{\sigma}{\sqrt{n} } ]

                                 = 52.33 ± 1.7646 [ 21.44 / √17 ]

                                 = 52.33 ± 9.0791

So,

52.33 + 9.0791  = 61.4091

52.33 - 9.0791  = 43.2509

So,

90% confidence interval is (43.25, 61.41)

Also,

Lower end-point = 43.25

Upper end-point = 61.41

4 0
3 years ago
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