3 years ago

Please help solve this

Mathematics

1 answer:

neonofarm [45]3 years ago

5 0

F(x)= (x+13)(x-2) in expanded form, it would be x^2+11x-26

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irga5000 [103]

Answer:

square root of 65

Step-by-step explanation:

all i am going to say is, Pythagorean theorem.

5 0

3 years ago

Although bats are not known for their eyesight, they are able to locate prey (mainly insects) by emitting high-pitched sounds an

Sergeu [11.5K]

Answer:

$Mean = 48.6364$

$s^2 = 331.8545$ -- Sample Variance

$s = 18.2169$ --- Sample Standard Deviation

Step-by-step explanation:

Given

$n = 11$

$Data: 24, 41 ,25 ,68 ,53 ,83 ,43 ,63 ,56 ,34 ,45$

Solving (a): The sample mean

$Mean = \frac{\sum x}{n}$

So:

$Mean = \frac{24 +41 +25 +68 +53 +83 +43 +63 +56 +34+ 45}{11}$

$Mean = \frac{535}{11}$

$Mean = 48.6364$

Solving (b): Sample variance (s^2)

This is calculated as:

$s^2 = \frac{\sum (x - \bar x_i)^2}{n - 1}$

Where:

$\bar x = 48.6364$

So:

$s^2 = \frac{(24 -48.6364)^2 +(41 -48.6364)^2 +......................+( 45 -48.6364)^2}{11-1}$

$s^2 = \frac{3318.54545456}{10}$

$s^2 = 331.8545$

Solving (c): Sample Standard Deviation (s)

This is calculated as:

$s = \sqrt {s^2$

$s = \sqrt{331.8545$

$s = 18.2169$

8 0

3 years ago

Mia bought 8 ounces of chickpeas for $8.32 last week. Her grocery store was selling chickpeas for the same unit price the follow

Svetradugi [14.3K]

Answer:

3.5 ounces

Step-by-step explanation:

8.32 / 8 = 1.04

1 ounce is $1.04

3.64 / 1.04 = 3.5

5 0

3 years ago

Complete this activity.<br> Given: f(x) = x + 2 and h(x) = 1/x-1 <br> 2f(x) - h(x) =

gayaneshka [121]

X plus 4 -1x there, that's the next sequence

7 0

3 years ago

Read 2 more answers

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8090 [49]

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4 0

3 years ago