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zubka84 [21]
2 years ago
10

Two jets simultaneously started traveling in opposite directions from the same airport. Four hours later they were 3800 miles ap

art. Find the rate of each plane if one of them traveled 80 miles per hour faster than the other.
Mathematics
1 answer:
Basile [38]2 years ago
7 0

Step-by-step explanation:

the slower plane traveled x miles in 4 hours.

the faster plane traveled x + 4×80 = x + 320 miles in 4 hours.

so,

x + x + 320 = 3800 miles

2x =3480 miles

x =1740 miles (in 4 hours) .

that means the slower plane's speed was 435 mph.

and the faster plane's speed was 435 + 80 = 515 mph.

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Provide a recursive definition of the function f(n) = (n+1)!.
fiasKO [112]

Answer:

See definition below

Step-by-step explanation:

Since we have to give a recursive definition, we must give a initial value f(0). Additionally, the value of f(n) must depend on the value of f(n-1) for all n≥1.

The required value of f(0) is (0+1)!=1!=1.

Now, the factorial itself is a recursive function, because (n+1)!=(n+1)n!. In terms of f, this means that f(n)=(n+1)f(n-1) for all n≥1.

Then, our definition is: f:N→N is defined by

  1. f(0)=1.
  2. For n≥1, f(n)=(n+1)f(n-1).
8 0
3 years ago
Given j(x) = x + 5, what is the value of j(12)?
yarga [219]

Answer:

j(12) = 17

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>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

j(x) = x + 5

j(12) is x = 12

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    j(12) = 12 + 5
  2. Add:                                     j(12) = 17
8 0
3 years ago
Read 2 more answers
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NARA [144]
The answer is 10u +3v
7 0
3 years ago
A line passes throught the point (-4,7) and has a slope of 2/3. Write an equation in point slope form for this line.
NikAS [45]
Equation in point slope form of a line:
y-y₀=m(x-x₀)
m=slope

(x₀,y₀)=(-4,7)
m=2/3
y-7=(2/3)(x+4)

Answer: y-7=(2/3)(x+4) 

8 0
3 years ago
What is the quotient when the sum of 1,2 and 3 is divided by the product of 1,2 and 3
nexus9112 [7]

Answer: 1

<u>Explanation:</u>

sum = add

quotient = divide

product = multiply

\frac{1+2+3}{1*2*3} = \frac{6}{6} = 1

5 0
3 years ago
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