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V125BC [204]
3 years ago
7

If you can answer these simple questions im giving brainly :)

Mathematics
2 answers:
Kaylis [27]3 years ago
5 0

Answer:

a² + 1 = 65

18/2a = 3

6(d + 8) - 10d = 46

Step-by-step explanation:

<u>a² + 1 when a = 8</u>

first, plug in 8 for a.

  • a² + 1 ⇒ 8² + 1

begin simplifying by finding 8², which is just 8 · 8.

  • 8² + 1 ⇒ 64 + 1

finish simplifying by adding 64 + 1.

  • 64 + 1 = 65

therefore, when a = 8, a² + 1 = 65.

<u>18/2a when a = 3</u>

first, plug in 3 for a.

  • 18/2a ⇒ 18/2(3)

begin simplifying by multiplying 2 · 3.

  • 18/2(3) ⇒ 18/6

finish simplifying by dividing 18 ÷ 6.

  • 18/6 = 3

therefore, when a = 3, 18/2a = 3.

<u>6(d + 8) - 10d when d = 1/2</u>

<em>(i'm going to convert 1/2 to 0.5 because i prefer working with decimals rather than fractions)</em>

<em>so...</em> <u>6(d + 8) - 10d when d = 0.5</u>

first, plug in 0.5 for d.

  • 6(d + 8) - 10d ⇒ 6(0.5 + 8) - 10(0.5)

begin simplifying by distributing 6 to 0.5 and 8, which is just 6 · 0.5 and 6 · 8.

  • 6(0.5) = 3
  • 6(8) = 48

after distributing, your expression is 3 + 48 - 10(0.5).

continue simplifying by multiplying -10 · 0.5.

  • 3 + 48 - 10(0.5) ⇒ 3 + 48 - 5

add 3 + 48.

  • 3 + 48 - 5 ⇒ 51 - 5

finally, finish simplifying by subtracting 5 from 51.

  • 51 - 5 = 46

therefore when d = 1/2 or 0.5, 6(d + 8) - 10d = 46.

i hope this helps! have an amazing day <3

Lisa [10]3 years ago
3 0

Answer:

65   3    46

Step-by-step explanation:

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