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lidiya [134]
2 years ago
7

Whose answer do you think is more likely to be representative of all the students in the schools? Explain.

Mathematics
1 answer:
maxonik [38]2 years ago
4 0

Answer:

Jordan's answer

Step-by-step explanation:

Because she went us to random people versus only the 8th grade kids

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40% of a number is 68.What is the number?
Talja [164]
The number is 17 hope it helps

7 0
3 years ago
Simplify the fraction and state the excluded value(s).
stira [4]

Answer:

\displaystyle \frac{7x^2 + 4x - 20}{5x + 10} = \frac{7x - 10}{5}, x \neq -2

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>Algebra I</u>

  • Terms/Coefficients
  • Factoring

<u>Calculus</u>

Discontinuities

  • Removable (Holes)
  • Jump (Piece-wise functions)
  • Infinite (Asymptotes)

Step-by-step explanation:

<u>Step 1: Define</u>

<u />\displaystyle \frac{7x^2 + 4x - 20}{5x + 10}<u />

<u />

<u>Step 2: Simplify</u>

  1. [Frac - Numerator] Factor quadratic:                    \displaystyle \frac{(7x - 10)(x + 2)}{5x + 10}
  2. [Frac - Denominator] Factor GCF:                        \displaystyle \frac{(7x - 10)(x + 2)}{5(x + 2)}
  3. [Frac] Divide/Simplify:                                           \displaystyle \frac{(7x - 10)}{5}, x \neq -2

When we divide (x + 2), we would have a <em>removable</em> <em>discontinuity</em>. If we were to graph the original function, we would see at x = -2 there would be a hole in the graph.

8 0
2 years ago
Seventeen candidates have filed for the upcoming county council election. 7 are women and 10 are men a) Is how many ways can 10
tankabanditka [31]

Answer: (a) 19448 ways

(b) 5292 ways

(c) 0.2721

Step-by-step explanation:

(a) 10 county council members be randomly elected out of the 17 candidates in the following ways:

= ^{n}C_{r}

= ^{17}C_{10}

= \frac{17!}{10!7!}

= 19448 ways

(b) 10 county council members be randomly elected from 17 candidates if 5 must be women and 5 must be men in the following ways:

we know that there are 7 women and 10 men in total, so

= ^{7}C_{5} × ^{10}C_{5}

= \frac{7!}{5!2!} × \frac{10!}{5!5!}

= 21 × 252

= 5292 ways

(c) Now, the probability that 5 are women and 5 are men are selected:

= \frac{ ^{7}C_{5} * ^{10}C_{5}}{^{17}C_{10}}

= \frac{5292}{19448}

= 0.2721

8 0
3 years ago
HELP ASAP WILL MARK BRAINIEST!!!!!
Setler [38]
1/4 revolution per foot, not sure about slope. Hope this helps
6 0
2 years ago
Factorise 9y^2-66yz+121z^2 plss answer with steps plss
aksik [14]

Answer:

(3y - 11z)2

Step-by-step explanation:

hahaha hello again

8 0
2 years ago
Read 2 more answers
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