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Phoenix [80]
3 years ago
7

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

Mathematics
2 answers:
frozen [14]3 years ago
5 0
Add <span><span>4<span>a2</span></span><span>4⁢<span>a2</span></span></span> and <span><span>4<span>a2</span></span><span>4⁢<span>a2</span></span></span> to get <span><span>8<span>a2</span></span><span>8⁢<span>a2</span></span></span> .<span><span><span><span>8<span>a2</span></span>+<span>2a</span></span><span>−5</span></span><span><span><span>8⁢<span>a2</span></span>+<span>2⁢a</span></span><span>-<span>5</span></span></span></span>
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:

<em>F</em> = a person with fibromyalgia

<em>R</em> = 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” = ? <br> 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:

27

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

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]

<u>End behavior: </u>

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

<u>Zeroes:</u>

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

<u>Intervals:</u>

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.

<u>Graph:</u>

see attachment



3 0
3 years ago
Read 2 more answers
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