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2 years ago

What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...

Mathematics

2 answers:

PolarNik [594]2 years ago

8 0

Answer:

141 5/7

Step-by-step explanation:

8c + 10b ÷ 7a

Let c = 7, b = 12, and a = 5

8*7 + 10*12 ÷ 7*5

Multiply and divide from left to right

56+120 ÷7*5

56+ 600/7

Get a common denominator

392/7 + 600/7

992/7

Change from an improper fraction to a mixed number

141 5/7

Lisa [10]2 years ago

6 0

Answer:

416 3

= -------- or 59 ----

7 7

Step-by-step explanation:

8c + 10b ÷ 7a

if c = 7, b = 12, and a = 5

plug in values:

= 8(7) + 10(12) ÷ 7(5)

= 56 + 120 / 35

= 56 + 24/7 ---- convert into factions

56 * 7 24

= -------- + ------

7 7

sine the denominator are equal, combine the fraction

56 * 7 + 24

= -----------------

416 3

= -------- or 59 ----

7 7

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2 years ago

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3 years ago

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You bought a magazine for $3 and two notepads. You spent a total of $13. How much did each notepad cost? *

sweet-ann [11.9K]

Answer:

Step-by-step explanation:

We want to find the cost of a notepad considering a magazine costs $3 and we buy 2 notepads and the total cost of the magazine and the 2 notepads is $13 so we can set up an equation to represent this situation. Let 'n' be notepads and that's the value we are solving for so,

⇒ Form the equation

→ 2n + 3 = 13

⇒ Minus 3 from both sides to isolate 2n

→ 2n = 10

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→ n = 5

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2 years ago

What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...​

What is 8c + 10b ÷ 7a if c = 7, b = 12, and a = 5 Please give a full and good explanation for a brainliest...