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3 years ago

4a^2+2a+4a^2-5 Simplify the expression

2 answers:

5 0

Add 4a24⁢a2 and 4a24⁢a2 to get 8a28⁢a2 .8a2+2a−58⁢a2+2⁢a-5

raketka [301]3 years ago

4 0

it would be 8a^2+2a-5 but if u need value of a you can apply quadratic formula

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8. Kim has a fever. Her temperature is 100.5 degrees Fahrenheit. Norr

Wewaii [24]

Answer:

1.9 degrees above the normal temperture

Step-by-step explanation:

Normal temperture: 98.6 degrees Fahrenheit

100.5 - 98.6 = 1.9

4 0

3 years ago

Restless Leg Syndrome and Fibromyalgia

mixas84 [53]

Answer:

The probability that a person with restless leg syndrome has fibromyalgia is 0.1833.

Step-by-step explanation:

Denote the events as follows:

F = a person with fibromyalgia

R = a person having restless leg syndrome

The information provided is as follows:

P (R | F) = 0.33

P (R | F') = 0.03

P (F) = 0.02

Consider the tree diagram attached below.

Compute the probability that a person with restless leg syndrome has fibromyalgia as follows:

$P(F|R)=\frac{P(R|F)P(F)}{P(R|F)P(F)+P(R|F')P(F')}\\\\=\frac{(0.33\times 0.02)}{(0.33\times 0.02)+(0.03\times 0.98)}\\\\=0.183333\\\\\approx 0.1833$

Thus, the probability that a person with restless leg syndrome has fibromyalgia is 0.1833.

6 0

3 years ago

2 x 1’- 2 3/8” = ? Please help

Nat2105 [25]

Answer:

$=-\frac{3}{8}$ is the answer.

Step-by-step explanation:

We have to solve the given expression 2 × 1 - 2 3/8

$2\times 1-2\frac{3}{8}$

$=\frac{2}{1}-\frac{19}{8}$ [Now we take LCF of denominators of both the fractions]

$=\frac{(16-19)}{8}$

$=-\frac{3}{8}$

So the final answer is $=-\frac{3}{8}$

8 0

3 years ago

Huilan is 13 years younger than Thomas. The sum of their age is 41. What is Thomas's age?

stiv31 [10]

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Let's set Huilan's age to h and Thomas's age to t.

Since Huilan is 13 years younger than Thomas, we can write:

h = t - 13

The sum of both their ages is 41, so let's combine the variables h and t together.

h + t = 41

We said that h = t - 13, so substitute this value into the equation.

(t - 13) + t = 41

Combine like terms.

2t - 13 = 41

Add 13 to both sides of the equation.

2t = 54

Divide both sides of the equation by 2.

t = 27

Thomas's age is 27 years old.

Thank you L for helping me with this question :)

4 0

3 years ago

Describing Key Features of a Graph of a Polynomial Function:

Diano4ka-milaya [45]

End behavior:

The parent function is: f(x) = x³, which starts (from the left side) at -∞ and ends (on the right side) at +∞.

Zeroes:

f(x) = x³ + 2x² - 8x

0 = x³ + 2x² - 8x

0 = x(x² + 2x - 8)

0 = x(x + 4)(x - 2)

0 = x 0 = x + 4 0 = x - 2

x = 0 x = -4 x = 2

Intervals:

Put the zeroes in order: -4, 0, 2

since f(x) is increasing from the left then the interval from -4 to 0 is positive and the interval from 0 to 2 is negative.

Graph:

see attachment

3 0

3 years ago

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