${x}^{2} + 2x + 1 = 17 \\ {x}^{2} + 2x - 16 = 0 \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{ - 2± \sqrt{68} }{2} \\ x = \frac{ - 2±2 \sqrt{17} }{2 } \\ x = - 1± \sqrt{17}$

5 0

2 years ago

What is 2/7 as a decimal

Tamiku [17]

Its .2857142857(long decimal xD)

6 0

3 years ago

Read 2 more answers

PLEASE HELPPPP MEEEEEE!!!!

wlad13 [49]

Answer:

It’s B

Step-by-step explanation:

8 0

2 years ago

In June, Tara gathered data about amusement park attendance on days with different temperatures. Tara used the equation y=−3.5x+

sergij07 [2.7K]

Answer:

Step-by-step explanation:

Given the model:

y=−3.5x+400

Number of children in amusement park = y

Temperature = x

On a certain day:

Temperature = 90°F

Number of children in park = 60

Using the model :

The predicted number of children in park when temperature is 90°F would be :

y = - 3.5(90) + 400

y = - 315 + 400

y = 85

Model prediction = 85 children

Actual figure = 60

Residual :

|Actual - predicted | = |60 - 85| = 25 children

6 0

2 years ago