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2 years ago

Show how to do all 3 for brainliest

Mathematics

2 answers:

ANEK [815]2 years ago

8 0

Nothing is the correct Answer

Masja [62]2 years ago

5 0

Answer:

14. It is 116.80

because the formula is π x r² so 6.1² x 3.14= 116.8394

15. It is 50.20

because the formula is r²*3.14 and the radius if half of the diameter and the diameter is 8 and half of it would be 4 and 4²=16 so 16*3.14= 50.24

16. probably 78.5

5²*3.14

Step-by-step explanation:

if its right can i have the brainliest

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2 years ago

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Step-by-step explanation:

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3 years ago

REALIZAR CADA ELERCICIO POR LOS TRES METIDOS EXPLICADOS EN CLASE

meriva

Hello!

Answer:

1. x= 1 / y= 2 / z= -3 / <u>(1 ; 2 ; -3)</u>

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Step-by-step explanation:

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2 years ago

Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.Josiah has punch c

love history [14]

Let x be the number of weeks; therefore, the two linear equations are

$\begin{gathered} T=2+7x \\ \text{and} \\ C=11+4x \end{gathered}$

Where T stands for the punches on the tea punch card and C for the punches on the coffee punch card.

Solving by substitution. Set T=C, then

$\begin{gathered} T=C \\ \Rightarrow2+7x=11+4x \\ \Rightarrow3x=9 \\ \Rightarrow x=\frac{9}{3}=3 \\ \Rightarrow x=3 \end{gathered}$

Thus, substitute the value of x=3 into the first equation,

$\begin{gathered} x=3 \\ \Rightarrow T=2+7\cdot3=23 \\ \Rightarrow T=23 \end{gathered}$

Thus, after 3 weeks, Josiah will have the same number of punches on each card, and he will have 23 punches on each card.

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1 year ago