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3 years ago

PLZ HELP ASAP GEOMETRY

Mathematics

1 answer:

forsale [732]3 years ago

6 0

Answer:

Step-by-step explanation:

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Y=x^2-3x-6 x+y=2 Help 50 Points!!! Show Work

Alborosie

X + y = 2 —> y = 2 - x
insert to first equation
2-x=x^2-3x-6
x^2 - 3x - 6 - 2 + x = 0
x^2 - 2x - 8 = 0
(x-4)(x+2) = 0
x = 4 or x = -2

5 0

2 years ago

Read 2 more answers

What is the domain and range of f(x)=2x^2+6x+2

lbvjy [14]

As is the case for any polynomial, the domain of this one is (-infinity, +infinity).

To find the range, we need to determine the minimum value that f(x) can have. The coefficients here are a=2, b=6 and c = 2,

The x-coordinate of the vertex is x = -b/(2a), which here is x = -6/4 = -3/2.

Evaluate the function at x = 3/2 to find the y-coordinate of the vertex, which is also the smallest value the function can take on. That happens to be y = -5/2, so the range is [-5/2, infinity).

3 0

3 years ago

Fran drew a triangle with no congruent sides and one right angle.Which term accurately describes a triangle?Select all that appl

strojnjashka [21]

Scalene and right, since:

There is a right angle
and scale means that there are no angles that are the same.

3 0

3 years ago

Write a exponential function of 1600 by5.6%

NeX [460]

Step-by-step explanation:

If there is a growth of 5.6% per time unit. The function is

f(t) = 1600 * (1.056)^t

3 0

2 years ago

Justin deposited $2,000 into an account 5 years ago. Simple interest was paid on the account. He has just withdrawn $2,876. What

RSB [31]

Answer: 8.76%

Step-by-step explanation:

The formula to find the simple interest is given by :-

$I=Prt$ , where P is the principal amount, r is rate of interest () in decimal and t is the time ( in years). (1)

Given : Justin deposited $2,000 into an account 5 years ago.

i.e. P = $2,000 , t= 5 years

He has just withdrawn $2,876. i.e. Future value = $2,876

Interest (I)=$2,876-$2,000=$876 [Subtract Principal value from Future value]

Substitute all the above values of P , t , and I in the formula (1) , we get

$876 =(2000)r(5)\\\\\Rightarrow\ r=\dfrac{876 }{2000\times5}\\\\\Rightarrow r=\dfrac{876}{10000}=0.0876$

In percent , $r=0.0876\times100=8.76\%$

Hence, the rate of interest = 8.76%

6 0

3 years ago