Ask question

Ask question

All categories

Mekhanik [1.2K]

2 years ago

9

You get in an elevator and go down 8 floors. You exit on the 9th floor. Write and solve an equation to find what floor you got o

n the elevator.

2 answers:

AlexFokin [52]2 years ago

6 0

Answer:floor 17

Step-by-step explanation:

andrew11 [14]2 years ago

3 0

Answer:

X - 8 = 9

17th floor

Step-by-step explanation:

X - 8 = 9

X = 17

You might be interested in

Rationalize the numerator or denominator, and simplify:

allochka39001 [22]

$\dfrac{\sqrt[3]{x+h}-\sqrt[3]x}h\times\dfrac{\sqrt[3]{(x+h)^2}+\sqrt[3]{x(x+h)}+\sqrt[3]{x^2}}{\sqrt[3]{(x+h)^2}+\sqrt[3]{x(x+h)}+\sqrt[3]{x^2}}=\dfrac{(\sqrt[3]{x+h})^3-(\sqrt[3]x)^3}\cdots$
$=\dfrac{x+h-x}\cdots=\dfrac h\cdots$

The $h$ s then cancel, leaving you with the $\cdots=\sqrt[3]{(x+h)^2}+\sqrt[3]{x(x+h)}+\sqrt[3]{x^2}$ term.

If it's not clear what I did above, consider the substitution $a=\sqrt[3]{x+h}$ and $b=\sqrt[3]x$ . Then

$a^3-b^3=(a-b)(a^2+ab+b^2)$
$\implies\dfrac{a-b}h=\dfrac{a-b}h\times\dfrac{a^2+ab+b^2}{a^2+ab+b^2}=\dfrac{a^3-b^3}{h(a^2+ab+b^2)}$

4 0

2 years ago

the number has three digits that add up to 10 when it is multiply by 0.5 the product is 6.35. whats the number?

irina [24]

Answer:

i know

Step-by-step explanation:

bro

4 0

2 years ago

Harriet is cultivating a strain of bacteria in a petri dish, she has 10^3 bacteria in the dish. The bacteria divided every two h

olga_2 [115]

Answer:

4000

Step-by-step explanation:

A=P(2)^(t/d)

A=future amount

P=starting amount

t=time elapsed

h=doubling time

given

P=10^3

t=6

d=2

A=10^3(2)^(6/2)

A=10^3(2)^2

A=10^3(4)

A=4*10^3

A=4000

4000 bacteria

8 0

2 years ago

-3x^2+6x+1=4 find the discriminant of each quadratic equation then state the number and type solutions

ipn [44]

Answer:

S={( 1 )}

Step-by-step explanation:

-3x²+6x+1=4

-3x²+6x+1-4=0

-3x²+6x-3=0

∆=b²-4.a.c

∆=(6)²-4.(-3).(-3)

∆=36-36

∆=0

x'=x"=-b/2a=-(+6)/2.(-3)=-6/-6=1

3 0

3 years ago

Read 2 more answers

Express cos I as a fraction in simplest terms

quester [9]

Cos I = 16/34 = 8/17

3 0

2 years ago

Read 2 more answers