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3 years ago

Simplify 12y-(-4-8y)

Mathematics

2 answers:

antoniya [11.8K]3 years ago

5 0

20y + 4 (12y+8y and -(-4))

Digiron [165]3 years ago

4 0

Step-by-step explanation:

12y-(-4-8y)

= 12y +4 + 8y. ['-' getting multiplied when brackets open]

= 12y + 8y +4. [ Adding the like terms ]

= <u>20 y + 4 (Ans)</u>

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I can't figure out the second answer please help!!!

Mekhanik [1.2K]

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3 years ago

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3 years ago

The circumference of the bike tire above is 83.524 inches. What is the radius of the bike tire? (Use 3.14 for .) A. 262.27 in B.

Shtirlitz [24]

Answer:

Option <u>C. 13.3 in</u>.

Step-by-step explanation:

Here's the required formula to find the radius of the bike tire :

$\longrightarrow{\pmb{\sf{C_{(Circle)} = 2\pi r}}}$

C = circumference
π = 3.14
r = radius

Substituting all the given values in the formula to find the radius of the bike tire :

$\begin{gathered} \qquad{\longrightarrow{\sf{C_{(Circle)} = 2\pi r}}} \\ \\ \qquad{\longrightarrow{\sf{83.524 = 2 \times 3.14 \times r}}} \\ \\ \qquad{\longrightarrow{\sf{83.524 = 6.28 \times r}}} \\ \\ \qquad{\longrightarrow{\sf{83.524 = 6.28r}}} \\ \\ \qquad{\longrightarrow{\sf{r = \frac{83.524}{6.28}}}} \\ \\ \qquad{\longrightarrow{\sf{r = 13.3 \: in}}} \\ \\ \qquad \star{\underline{\boxed{\sf{\red{r = 13.3 \: in}}}}}\end{gathered}$