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Mathematics

1 answer:

nataly862011 [7]2 years ago

8 0

Answer:

No, (8,5) is not a solution of y > x + 7

Step-by-step explanation:

Hope you got it.

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Tiffany has a spinner that is split into four equal sections: red, blue, green, and yellow. Tiffany spun the spinner 680 times.

Lyrx [107]

Probability of getting Green is 1/4
1/4 ×680 = 170
so choose nearest answer will 187

4 0

2 years ago

For every $5 tent saved, his his dad will contribute $2 to his saving account. How much will Trent have to put into the account

KonstantinChe [14]

Answer:

$40

Step-by-step explanation:

Trent contributes 5/(5+2) = 5/7 of the amount in his account. For an amount of $56, he must contribute ...

(5/7)×$56 = $40

Trent will have to put $40 into the account before he can buy a $56 skateboard.

7 0

2 years ago

Please solve this <img src="https://tex.z-dn.net/?f=%20%7Cx%20%5E%7B2%7D%20%2B%203x%20-%201%20%7C%20%20%3C%203" id="TexFormul

klasskru [66]

$\bf |x^2+3x-1|\ \textless \ 3\implies 
\begin{cases}
+(x^2+3x-1)\ \textless \ 3\\\\
-(x^2+3x-1)\ \textless \ 3
\end{cases}\\\\
-------------------------------\\\\
x^2+3x-1\ \textless \ 3\implies x^2+3x-4\ \textless \ 0\implies (x+4)(x-1)\ \textless \ 0
\\\\\\
x\ \textless \ 
\begin{cases}
-4\\
1
\end{cases}\\\\
-------------------------------\\\\
-(x^2+3x-1)\ \textless \ 3\implies x^2+3x-1\boxed{\ \textgreater \ }-3
\\\\\\
x^2+3+2\ \textgreater \ 0\implies (x+2)(x+1)\ \textgreater \ 0\implies x\ \textgreater \ 
\begin{cases}
-2\\
-1
\end{cases}$