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2 years ago

Which is a zero of the quadratic function f(x)= 4x^2+24x+11 ?

1 answer:

3 0

Using the quadratic formula the 2 zeros of the function (there have to be 2 cuz it's a quadratic) are x = -1/2 and -5 1/2

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Please help domain/range and eqation

Elena-2011 [213]

Domain: (infinity, 4]
range: [-6, infinity)

4 0

2 years ago

(2x+1)/2=(x+2)/5 if possible can you show me step by step how to get the answer

katrin2010 [14]

Answer:

$\boxed{\bold{Decimal \ Form: \ x \ = \ -0.125}}$

$\boxed{\bold{Fraction \ Form:x=-\frac{1}{8}}}$

Step By Step Explanation:

Apply Fraction Cross Multiply: If $\bold{\frac{a}{b}=\frac{c}{d}:then\ a\cdot \:d=b\cdot \:c}$

$\bold{\left(2x+1\right)\cdot \:5=2\left(x+2\right)}$

$\bold{\left(2x+1\right)\cdot \:5: \ 10x+5}$

$\bold{2\left(x+2\right): \ 2x+4}$

$\bold{10x+5=2x+4}$

Subtract 4 From Both Sides

$\bold{10x+5-5=2x+4-5}$

Simplify

$\bold{10x=2x-1}$

Subtract 2x From Both Sides

$\bold{10x-2x=2x-1-2x}$

Simplify

$\bold{8x=-1}$

Divide Both Sides By 8

$\bold{\frac{8x}{8}=\frac{-1}{8}}$

Simplify

$\bold{x=-\frac{1}{8}}$

Turn Fraction Into Decimal

$\bold{-1 \ \div \ 8 \ = \ -0.125}$

$\bold{-0.125}$

Regards,

Mordancy

8 0

3 years ago

$213 ski jacket with a 30% discount and a 6% tax

Aneli [31]

$158.046

Take the discount off first, 213*.70=149.10, then multiply 149.10*1.06= $158.046

8 0

3 years ago

Which of these is a trinomial? A. 2x-7 B. 2x2 - 7/3 + 14 c. 2y2 + 7y D. 5xy

s344n2d4d5 [400]

Step-by-step explanation:

answer B because they are 3 terms

6 0

3 years ago

How can simple interest make saving money easier?

Airida [17]

Answer:

Step-by-step explanation:

I'm sorry its just off the top of my head don't relaly understand how I got it

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2 years ago