2 years ago

I really need help with this please!

Mathematics

1 answer:

aleksandrvk [35]2 years ago

8 0

I’ve attached my work...
Hope it helps!

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VladimirAG [237]

The answer is X is greater than -2! <3

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Tiffany answered 80% of the questions on her math test correctly. There were 40 questions. How many questions did Tiffany get co

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3 years ago

Write the expression in standard form. -2(8m + 3)

Artist 52 [7]

Answer:

-16m-6

Step-by-step explanation:

use distributive property, you get -16m-6

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3 years ago

Read 2 more answers

Plz help i need it!!

Umnica [9.8K]

Answer: c) 19,807

<u>Step-by-step explanation:</u>

$A=A_o\cdot e^{kt}\\\\\bullet A_o\text{ is the initial population}\\\bullet \text{k is the rate of decrease}\\\bullet \text{t is the number of years after 2010}\\\\A=22,000\cdot e{(-0.021)(5)}\\.\ =22,000\cdot e^{-0.105}\\.\ =19,807$

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2 years ago

What is the vertex of the function?

egoroff_w [7]

<h2>Explanation:</h2><h2></h2>

Here you haven't provided any function, so I'll assume this one:

$f(x)=3x^2-18x+33$

This is a quadratic function whose graph represents a parabola. Any parabola has its vertex at the point:

$V(x,y) \\ \\ \\ x=-\frac{b}{2a} \\ \\ y=f(-\frac{b}{2a}) \\ \\ \\ where: \\ \\ \\ f(x)=ax^2+bx+c \\ \\ \\ So: \\ \\ a=3 \\ \\ b=-18 \\ \\ c=33$

Therefore:

$x=-\frac{(-18)}{2(3)}=3 \\ \\ f(3)=3(3)^2-18(3)+33=27-54+33=6$

Therefore, the vertex is:

$\boxed{V(3,6)}$

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3 years ago