X - the percent of increase

$210+210x=260 \\
210x=260-210 \\
210x=50 \\
x=\frac{50}{210} \\
x \approx 0.238 \\
x \approx 23.8\%$

The percent of increase is approximately 23.8%.

5 0

3 years ago

An air plane travels at a constant speed of 575 miles per hour. Write and equation that can be used to detrmine the number of mi

cluponka [151]

miles divided by hours and there is your answer

6 0

3 years ago

If you knew that the vertical intercept for a straight line was 15, that the slope was -.5, and that the independent variable ha

Finger [1]

Y=-.5x+15 plug in 8 for x and you get 11

7 0

3 years ago

EDIT// answer below thank for the help -.-

HACTEHA [7]

Step-by-step explanation:

Move it it up 4 and then find your x intercepts.

Find the x intercepts.

$-x^2 + 4 = 0$

Move the 4 over to the right

$-x^2 = -4$

Divide out the -

$\frac{-x^2}{-} = \frac{-4}{-}$

$x^2 = 4$

Take the square root of each side

$\sqrt{x^2} = \pm \sqrt{4}$

$x = \pm \sqrt 2$

Our x intercepts are at (-2,0) (2,0)

8 0

3 years ago