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3 years ago

Solve the system of equations using Gaussian Elimination method.

Mathematics

1 answer:

marysya [2.9K]3 years ago

4 0

Answer:

i was W Bush administration and I have been there before the

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A 12-team soccer league has $7,260 to award as prize money. the team that finishes in last place will receive $220, and the priz

Anestetic [448]

Answer: $ 990

Step-by-step explanation:

Since, the total number players, n = 12,

The least amount got by one team, a= $ 220

Let there is a successive difference of d,

Thus, the given situation forms an AP,

In which sum of the AP, $S_n= \frac{12}{2}[2\times 220 + (12-1)d]$

But, According to the question,

$S_n = $ 7260$

⇒ $\frac{12}{2}[2\times 220 + (12-1)d]=7260$

$6[440 + (11)d]=7260$

$440 + 11 d=1210$

$11 d =770$

$d = 70$

Thus, the successive difference, d = $ 70

⇒ The amount of first price,

$a_{12} = 220 + (12-1)\times 70 = 220 + 770 = \$ 990$

6 0

3 years ago

Solve the following equation using the quadratic formula.

Mice21 [21]

X is Equal to 3.5 :))

7 0

3 years ago

Sample information: 24 out of 1000 people who were surveyed had type 2 diabetes. Use the above sample information and construct

notka56 [123]

Solution :

The sample proportion $(\hat p)=\frac{24}{1000}$

= 0.024

90% confidence interval

The standard deviation = $\sqrt{\frac{\hat p(1-\hat p)}{n}$

= $\sqrt{\frac{0.024(1-0.024)}{1000}$

= 0.00484

z = 1.645 for 90% CI

Upper band = 0.024 + (0.00484 x 1.645 ) = 0.03196

Lower band = 0.024 - (0.00484 x 1.645 ) = 0.01603

Therefore, the 90% CI is (0.016, 0.032)

99% confidence interval

z = 2.576 for 99% CI

Upper band = 0.024 + (2.576 x 0.00484 ) = 0.0365

Lower band = 0.024 - (2.576 x 0.00484 ) = -0.0115

Therefore, the 99% CI is (0.0115, 0.0365)

5 0

3 years ago

REALLY NEED HELP WILL GIVE BRAINIEST A district manager rewards sales teams based on overall sales generated in a month. The dat

zloy xaker [14]

A:He should choose team Y because they have a Median, Low and High that are close in value and they have the lowest inter quartile range, IQR

B: He should choose team Z because they have the highest Mean, meaning that they have the highest average and the highest scores.

7 0

3 years ago

Compare: X and X decreased by 50% and then increased by 50% of the result

kaheart [24]

Step-by-step explanation:

100% = X

50% = 100%/2 = X/2

X decreased by 50 means X - 50% = X - X/2 = X/2

now,

100% = X/2

50% = 100%/2 = X/2 / 2 = X/(2×2) = X/4

increasing the previous result by 50% means

X/2 + 50% = X/2 + X/4 = 2X/4 + X/4 = 3X/4

so, comparing this to the original X (= 4X/4), we are X/4 short.

5 0

2 years ago