Can you help me on that

Mathematics

1 answer:

noname [10]3 years ago

3 0

Yes i can, but seeing as how you double posted? no

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An equation is shown 5 x + 3x equals 5x + 15 / 2 what value of 3 x makes this equation true

Ipatiy [6.2K]

3x would have to be 15/2.

Since we have that 5x+3x=5x+15/2, the only pieces that are different are the 3x and the 15/2. This gives us the equation

3x=15/2

If we were to go on and solve this equation, we would multiply by 2, giving us
6x=15

Then we would divide by 6:
6x/6=15/6
and x=2.5.

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4 years ago

Evaluate the expression 1/4 x (3/9 + 5)<br> Choices:1 1/3,1 2/3,5,answer not here.

Luda [366]

Answer:

First option

Step-by-step explanation:

Given the following equation:

$\frac{1}{4} \times(\frac{3}{9} +5)$

In order to find the answer, we solve the equation in between the parenthesis according to order of operations and then multiply that answer by 1/4.

$\frac{1}{4} \times(\frac{3}{9} +5)$
$5=\frac{5}{1}$
$\frac{3}{9} +\frac{5}{1}$
$3\times1=3$
$9\times1=9$
$5\times9=45$
$1\times9=9$
$\frac{3}{9} +\frac{45}{9}$
$3+45=48=\frac{48}{9}$
$\frac{48}{9} \div3=\frac{16}{3}$

$\frac{1}{4} \times\frac{16}{3}$
$1\times16=16$
$4\times3=12$
$\frac{16}{12} \div2=\frac{8}{6} \div2=\frac{4}{3}$
$\frac{4}{3} =4\div3=1\frac{1}{3}$
$=1\frac{1}{3}$

Hope this helps.