2 years ago

According to Euclidean geometry, a plane contains at least

Mathematics

1 answer:

Burka [1]2 years ago

3 0

Answer:

Step-by-step explanation:

wheres the rest

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A math book costs $9 and a science book costs $7. If Steve spends all his money in the science books, he still has $6 left. Howe

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A. 7 books each
B. he has $55

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2 years ago

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The standard IQ test has a mean of 102 and a standard deviation of 13. We want to be 98% certain that that we are within 5 IQ po

aleksklad [387]

Answer:

Step-by-step explanation:

Margin of error = critical value × standard error

For 98% confidence, CV = 2.326 (from t table).

Standard error is σ / √n, where σ is the population standard deviation, and n is the sample size.

Plugging in:

5 = 2.326 × 13 / √n

n = 36.6

Rounding up, n = 37.

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3 years ago

What is the distance between (1,-5) and (-3,6)

Wewaii [24]

Answer:

$\large\boxed{\sqrt{137}\approx11.7}$

Step-by-step explanation:

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have two points (1, -5) and (-3, 6). substitute:

$d=\sqrt{(-3-1)^2+(6-(-5))^2}=\sqrt{(-4)^2+11^2}=\sqrt{16+121}=\sqrt{137}$

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3 years ago

Plz answer only if you know it's correct. willl give brainliest to best answer

just olya [345]

Answer:

i believe is is 3/2

Step-by-step explanation:

as y goes up 30 x goes over 20

30/20 simplified is 3/2

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3 years ago

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Please help! While mining, Mike found a large metal bar that contained 6 ounces of lead. Mike also determined that the bar was 4

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Answer:

15 ounces

Step-by-step explanation:

6/40 = 0.15

0.15 x 100 = 15

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