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2 years ago

Saba used synthetic division to divide a polynomial f(x) by x + 1, as shown. What is the value of f(-1)?

Mathematics

2 answers:

goldfiish [28.3K]2 years ago

5 0

I tried my best on this even though i'm not 100% sure but im guessing its just gonna stay the same as -1.

melamori03 [73]2 years ago

4 0

the answer might be 9 ....

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s2008m [1.1K]

Answer:

Step-by-step explanation:

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2 years ago

Why is it important for a rainy-day fund to be highly liquid? A. Funds need to earn a high rate of return. B. Funds need to be e

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Answer: B. Funds need to be easily accessible

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2 years ago

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3 years ago

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The Johnson twins were born nine years after their older sister. This year, the product of the three siblings ages is exactly 18

KATRIN_1 [288]

Answer: The age of the twins is 10 years.

Step-by-step explanation:

Suppose the age of older sister be x

Let the age of twins sister be x-9, as they are born after 9 years.

Product of their ages be

$x(x-9)(x-9)\\\\=x(x^2-18x+81)\\\\=x^3-18x^2+81x$

Sum of their ages will be

$x+x-9+x-9\\\\=3x-18$

According to question,

$1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19$

So, Age of older sister will be 19 years.

Age of the twins will be

$19-9=10\ years$

Hence, the age of the twins is 10 years.

3 0

3 years ago

The mean height of women in a country (ages 20-29) is 64.5 inches. A random sample of 75 women in this age group is selected.

Allushta [10]

Answer:

0.07378

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ/√n, where

x is the raw score = 65 inches

μ is the population mean= 64.5 inches

σ is the population standard deviation = 2.99

n = 75

z = 65 - 64.5 /2.99/√75

z = 0.5/0.345255461

z = 1.4482

Probability value from Z-Table:

P(x<25) = 0.92622

P(x>25) = 1 - P(x<25)

= 1 - 92622

= 0.07378

The probability that the mean height for the sample is greater than 65 inches is 0.07378

4 0

2 years ago