What is the value of the expression below?

(Four-fifths + three-fifths) + 3.5 times 5
17 and StartFraction 7 over 10 EndFraction
18 and StartFraction 9 over 10 EndFraction
21 and three-fourths
24 and one-half

Respuesta :

Answer:

[tex]18.9=18\frac{9}{10}[/tex]

Step-by-step explanation:

The given expresion is

[tex](\frac{4}{5}+\frac{3}{5})+3.5 \times 5[/tex]

To solve this expression, we must apply the right hierarchy of operations. First, we must solve products and then we solve sums and differences.

[tex](\frac{4}{5}+\frac{3}{5})+17.5[/tex]

Then, we solve fraction sums

[tex]\frac{4+3}{5}+17.5=\frac{7}{5}+17.5[/tex]

Now, we can sum

[tex]\frac{7}{5}+17.5=\frac{7+87.5}{5} =\frac{94.5}{5}=18.9[/tex]

Which is equal to

[tex]18.9=18\frac{9}{10}[/tex]

Therefore, the right answer is the second hoice.

Answer:

18.9

Step-by-step explanation: