HELP!!!!!!!!!!!!!!!!¡!!!!

Mathematics

1 answer:

Gala2k [10]3 years ago

3 0

Answer:3rd choice

Step-by-step explanation:

eliminate choices with a=2+b and o=3+b because those say two more apples than bananas, and 3 more oranges than bananas.

eliminate choice with b=2a because that says twice as many bananas as apples.

You might be interested in

A woman is floating in a boat that is 175 feet from the base of a cliff. The cliff is 250 feet tall. What is the angle of elevat

yulyashka [42]

Answer:

75° I guess am I wrong or right

7 0

2 years ago

What is the unit rate for the proportional relationship represented by the equation y=4/5x

slava [35]

Answer:

the unit rate is 0.8x per unit y

Step-by-step explanation:

the proportional relationship is y = $\frac{4x}{5}$

this means that the constant of proportionality k = $\frac{4}{5}$ = 0.8

re-writing, we have

y = 0.8x

therefore, the unit rate is 0.8x per unit y

5 0

3 years ago

I don't know how to do this or what i'm doing plz help

mote1985 [20]

recalling that d = rt, distance = rate * time.

we know Hector is going at 12 mph, and he has already covered 18 miles, how long has he been biking already?

$\bf \begin{array}{ccll} miles&hours\\ \cline{1-2} 12&1\\ 18&x \end{array}\implies \cfrac{12}{18}=\cfrac{1}{x}\implies 12x=18\implies x=\cfrac{18}{12}\implies x=\cfrac{3}{2}$

so Hector has been biking for those 18 miles for 3/2 of an hour, namely and hour and a half already.

then Wanda kicks in, rolling like a lightning at 16mph.

let's say the "meet" at the same distance "d" at "t" hours after Wanda entered, so that means that Wanda has been traveling for "t" hours, but Hector has been traveling for "t + (3/2)" because he had been biking before Wanda.

the distance both have travelled is the same "d" miles, reason why they "meet", same distance.

$\bf \begin{array}{lcccl} &\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\ \cline{2-4}&\\ Hector&d&12&t+\frac{3}{2}\\[1em] Wanda&d&16&t \end{array}\qquad \implies \begin{cases} \boxed{d}=(12)\left( t+\frac{3}{2} \right)\\[1em] d=(16)(t) \end{cases}$

$\bf \stackrel{\textit{substituting \underline{d} in the 2nd equation}}{\boxed{(12)\left( t+\frac{3}{2} \right)}=16t}\implies 12t+18=16t \\\\\\ 18=4t\implies \cfrac{18}{4}=t\implies \cfrac{9}{2}=t\implies \stackrel{\textit{four and a half hours}}{4\frac{1}{2}=t}$