3 years ago

Which person is heavier? A guy that weighs 110 lb. or a woman that weighs 75 kg.

2 answers:

4 0

75kg is the awnser to this proble

4 0

A woman that weighs 75 kg

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Airida [17]

2/3b = 12

First you have to get rid of 2/3, so you multiply both sides by its reciprical:
(3/2) 2/3b = 12 (3/2) -->b = 36/2 --> b = 18

5 0

3 years ago

nydimaria [60]

There are at least 5

4 0

4 years ago

Vilka [71]

The item was 50.125% off

7 0

4 years ago

Tems11 [23]

We need to set up a system, rather than a single equation, because there are two variables involved.

The first equation represents the fact that the two numbers are in a 3:2 ratio:

$\dfrac{x}{y}=\dfrac{3}{2} \iff x=\dfrac{3}{2}y$

The second equation represents the fact that their sum is 35:

$x+y=35$

So, we have the following system:

$\begin{cases}x = \dfrac{3}{2}y\\x+y=35\end{cases}$

Using the expression for x in the first equation, the second one becomes

$x+y=35 \iff \dfrac{3}{2}y+y=35 \iff\dfrac{5}{2}y=35 \iff 5y=70 \iff y = 14$

which implies

$x=35-y=35-14=21$

7 0

3 years ago

marta [7]

5 dollars because she paid 30 for the meal

6 0

3 years ago