Answere this equation

Mathematics

1 answer:

Aloiza [94]3 years ago

5 0

Answer:

(2,-1)

Step-by-step explanation:

You might be interested in

Shelby saving account earns $8 in interest each month HOW MUCH will she earn in a 1 year

jonny [76]

$96 dollars in one year.

The simple explanation for this is that $8 for one month. solve for a year

12 months in a year.

so 8 x 12

and you get $96 in one year.

Please mark branliest if this helped

4 0

3 years ago

Suppose a ball is thrown directly upward from a height of 7 feet with an initial velocity of 50 feet per second. Use the quadrat

Fittoniya [83]

Answer:

t = 3.3 seconds

Step-by-step explanation:

From the formula of vertical motion of an object under gravity we can write the equation

$H = ut + \frac{1}{2} gt^{2}$ ....... (1)

Where u is the initial velocity (in feet per second) of throw of the object and t is time of travel in seconds and the value of g i.e. gravitational acceleration is 32 feet/sec².

Now, while a ball is thrown vertically upward with velocity 50 ft/sec from a height of 7 ft then the time of travel of the ball before reaching the ground, the equation (1) will be written as

$- 7 = 50t - \frac{1}{2} \times 32 \times t^{2}$

As we have selected the upward direction as positive so, gravitational acceleration,g will be negative and as the displacement is downward by 7 feet, so it will be negative.

⇒ 16t² - 50t - 7 = 0 ........ (2)

Now, applying Sridhar Acharya formula,

$t = \frac{-(-50) + \sqrt{(-50)^{2} - 4(16)(-7)}}{2(16)}$ {Neglecting the negative root as t can not be negative}