All categories

3 years ago

Solve the following equation. Then place the correct number in the box provided. 3 x = 12

Mathematics

1 answer:

Scorpion4ik [409]3 years ago

3 0

Answer:

I believe 4 but I'm not that good at math but 4

You might be interested in

A family of 2 children and 1 adult visited an amusement park and paid an entry fee of $90. Another family of 3 children and 2 ad

stiks02 [169]

$\underline{\underline{\large\bf{Solution:-}}}\\$

$\leadsto$ Let us assume entry fee for child be x

$\leadsto$ Let us assume entry fee for adult be y

$\\$

$\longrightarrow$ Since Entry fees for 2 children and 1 adult is $90 an equation for entry fees will be formed as -

$\begin{gathered}\\\implies\quad \sf 2\times x + 1 \times y = 90 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 2 x + y = 90 \\\end{gathered} \_\_\_\_\_(1)$

$\longrightarrow$ Similarly, Entry fees for 3 children and 2 adult is $155 , so an equation for entry fees will be formed as -

$\begin{gathered}\\\implies\quad \sf 3\times x + 2\times y = 155 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 3x + 2y = 155 \\\end{gathered} \_\_\_\_\_(2)$

Multiplying eq (1) by 2 it will be - 

$\begin{gathered}\\\implies\quad \sf 4x + 2y = 180\\\end{gathered}\_\_\_\_\_(3)$

Subtracting eq(2) from eq(3) - 

$\begin{gathered}\\\implies\quad \sf 4x+2y - (3x+2y) = 180-155\\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 4x + 2y - 3x - 2y = 35\\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 4x - 3x +2y- 2y = 35\\\end{gathered}$

$\begin{gathered}\\\implies\quad \bf x = 35\\\end{gathered}$

Thus , entry fee for a child at the amusement park = $ 35

7 0

1 year ago

Which one is the correct answer

galben [10]

Jim can do the 1/2 of floor in 4 hours
pete completes 1/2 of floor in 2 hour

therefor, since, pete took 1/2 as much time, pete can tile 2 times as many tiles (logic)

pete can lay 25 more than jim
if pete is 2 times of jim
p=2j
and pete is 25 more than jim
p=25+j
2j=p=25+j
2j=25+j
minus j
j=25

jim lays at 25 tiles per hour
C is answer

6 0

2 years ago

Assuming that boy and girl babies are equally likely, what would be Kathy's probability of having if she were to have four chi

Mars2501 [29]

It would be 1/2 of a chance

3 0

2 years ago

What is it called when columns filled with pairs of numbers that have the same ratio

kap26 [50]

You can call it a constant proportionality table because it is used to find the constant of proportionality and proportional relationships. (I am not really sure)

4 0

2 years ago

Can somebody show the work and help me with number 5 please (show the work in the comments)

Arturiano [62]

We need to see the chart

4 0

2 years ago