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3 years ago

Would appreciate the help

Mathematics

1 answer:

Fantom [35]3 years ago

5 0

The sum of the first 2 equations are 4y^2 + 3y + 3
The equation you have to subtract to get the final equation is 2y^2 - 4y + 5. I hope this helps.

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Here are measurements (in millime- ters) of a critical dimension on an SRS of 16 of the more than 200 auto engine crankshafts pr

Juli2301 [7.4K]

Answer:

(23.97, 24.03)

Step-by-step explanation:

Given the data:

224.120 224.001 224.017 223.982 223.989 223.961 223.960 224.089 223.987 223.976 223.902 223.980 224.098 224.057 223.913 223.999

Confidence interval = m ± Zcritical(s/√n)

n = sample size = 16

Zcritical at 95% = 1.96

Using calculator :

Sample mean, m = 224.0019

Standard deviation, s = 0.0618

Lower bound : 24.0019 - 1.96(0.0618/√16) = 23.971618

Upper bound : 24.0019 + 1.96(0.0618/√16) = 24.032182

(23.97, 24.03)

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3 years ago

The gum you like is on sale. it is regularly priced at $1.59.

Gemiola [76]

Answer:

The required equation is c = 1.59 - s

Step-by-step explanation:

Here, s represents the sales price per pack and c represents the cost saving,

Also, the regular price per pack = $ 1.59,

Since,

Cost saving = Regular price - sales price

⇒ c = 1.59 - s

Which is the required equation that is used to determine how much money is saved if the pack is bought today.

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4 years ago

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The digits of a two-digit number differ by 2. If the digits are interchanged and the resulting number is added to the original n

butalik [34]

$x$ - tens digit

$y$ - units digit

$10x+y$ - the original number

$10y+x$ - the number with interchanged digits

$|x-y|=2\\10x+y+10y+x=110\\\\x-y=2 \vee x-y=-2\\11x+11y=110\\\\x=y+2 \vee x=y-2\\x+y=10\\\\y+2+y=10 \vee y-2+y=10\\2y=8 \vee 2x=12\\y=4 \vee y=6\\\\x+4=10 \vee x+6=10\\x=6 \vee x=4$

$10x+y=10\cdot 6+4 \vee 10x+y=10\cdot4+6\\10x+y=64 \vee 10x+y=46$

Therefore, the original number can be either 46 or 64.

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3 years ago

Write 3.25 as a mixed number and improper fraction?

lana [24]

Mixed number = 3 and 1/4
Improper fraction = 13/4

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3 years ago

Frank is entering college and is trying to decide between a business major and a liberal arts major. He decides to conduct a ran

Sunny_sXe [5.5K]

The answer is B) <span>On average the business majors had a starting salary that was greater by about $6000.</span>

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3 years ago

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