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wlad13 [49]
3 years ago
9

Please help me with this problem

Mathematics
1 answer:
sineoko [7]3 years ago
7 0

Answer:

4

Step-by-step explanation:

\frac{ {3x}^{2} -2x + 7}{2x+5}  \\  \frac{3( - 1) {}^{2}  - 2( - 1) + 7}{2( - 1) + 5 }  \\  \frac{3 + 2 + 7}{ - 2 + 5}  \\  \frac{12}{3}  = 4

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Sheng ran 2 2/3 miles and walked 1 mile. How much farther did Sheng run than walk
nadezda [96]

Answer: 1 2/3 more

Step-by-step explanation:

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3 years ago
I need help with this question please help me...<br>- 21+3x = -3​
Rom4ik [11]

Answer:

  x=6

Step-by-step explanation:

-21+3x=-3

+21      +21

   3x=18

   /3   /3

   x = 6

5 0
3 years ago
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What is the y-intercept of the line given by the equation below? Enter your answer as an ordered pair.
allochka39001 [22]
We know that the slope formula is y=mx+b. We also know that b=y-intercept. The y-intercept is the location where the line crosses the y-axis on a coordinate plane.

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Therefore the y-intercept of that equation is: (0,7)
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3 years ago
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Select all ratios equivalent to 5:15.<br> 2:60, 20:9, 7:21, 1:3
NemiM [27]
20:9 and 1:3, it says my character count is too short so I'm writing this LOL
4 0
3 years ago
Given the following exponential function, identify whether the change represents
kherson [118]

the rate is usually the number in the parentheses in an exponential function, now the tell-tale piece is that, if the rate is less than 1, we have a Decay expression, and if the rate is more than 1, then is Growth.

well, let's see 0.365 is less than 1, so it's Decay.

\qquad \textit{Amount for Exponential Decay} \\\\ y=P(1 - r)^t\qquad \begin{cases} y=\textit{current amount}\\ P=\textit{initial amount}\dotfill &3100\\ r=rate\to r\%\to \frac{r}{100}\\ t=\textit{elapsed time}\\ \end{cases} \\\\\\ y = 3100(\stackrel{\stackrel{0.365}{\downarrow }}{1-\frac{r}{100}})^t\qquad \textit{this means that }\qquad 1-\cfrac{r}{100}=0.365 \\\\\\ -\cfrac{r}{100}=-0.635\implies r=(-100)(-0.635)\implies r=\stackrel{\%}{63.5}

5 0
3 years ago
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