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3 years ago

5

If the age of person A is 7 years more than that of person B and the sum of there ages is 25 years old how old is person A ? (Br

ainlest) This is not addition by the way

2 answers:

adelina 88 [10]3 years ago

8 0

Answer:

16

Step-by-step explanation:

9+16 = 25 9+ 7 = 16

nadya68 [22]3 years ago

6 0

Answer:

its 25 - 7, so 18

My answer is better, much better than the other guy's he cant even math right

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Which of the following may fall outside a triangle?

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2 years ago

Which graph shows a negative acceleration?

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Second Graph.

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It's the only graph that is concave down and the slope is decreasing.

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3 years ago

A potential energy function is given by U = A x3 + B x2 − C x + D . For positive parameters A, B, C, D this potential has two eq

Ivenika [448]

Answer:

7.8655

Step-by-step explanation:

Given the functionl

$U=Ax^3+Bx^2-cx+D$

Where,

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7 0

3 years ago

Explain how to determine the zeros of f(x)=(x+3)(x-1)(x-8)

spin [16.1K]

Answer:

x=-3, x=1, x=8

Step-by-step explanation:

When you have to find the zero of an equation like (x+3) all you have to do is solve for x.

x+3=0 equal the equation to zero

x+3-3=0-3 cancel out 3

x=-3 answer

If you have to find the zero of an equation like f(x)=-2x^2 - 5x + 7 then you would have to factor the equation.

7*-2=-14 multiply

-7 & 2 find the two numbers that when multiplied =14 and when added = -5

(2x^2 + 2) (-7x + 7) replace -5 with -7 & 2

-2x (x - 1) -7 (x - 1) factor

(x - 1) (-2x - 7) rewrite

1st: x - 1 = 0

x = 1 : Answer

2nd: -2x - 7= 0

-2x - 7 + 7 = 0 + 7

-2x = 7

-2x / -2 = 7 / -2

x = 7 / -2 : Answer

7 0

3 years ago

Read 2 more answers

Sam really wanted to buy a car, but did not have the money at the moment. He was talking to the salesman and they said that he c

wolverine [178]

Answer:

1) $30,821 ( loan balance after 3 months in )

2) 8.56%

Step-by-step explanation:

Final Amount of compound interest: A = P ( 1 + i ) ^ n

p = principal = $30,000

r = interest rate = 11.41% = 0.1141

n = number of years

1) Loan balance after 3 months

n = 3/12 = 0.25 years

A = 30,000 ( 1 + 0.1141 ) ^ 0.25

= $30,821 ( loan balance after 3 months in )

2) Loan Balance after 1 year

A = 30,000 ( 1 + 0.1141 ) ^ 1

= $33423

interest on loan = 33423 - 30,000 = $3423

percentage of $40,000 is $3423

= 3423 / 40,000 * 100

= 8.56%

8 0

3 years ago