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ankoles [38]
3 years ago
8

Please help a brother out

Mathematics
1 answer:
Svetlanka [38]3 years ago
6 0

Answer:

3√25 is irrational

-11/151 is rational

1.1625 is rational

5.15603418923 is rational

√256 is irrational

√141 is irrational

Step-by-step explanation:

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An object is propelled upward from the top of a 300 foot building. The path that the object takes as it falls to the ground can
serg [7]

Answer:

As per the statement:

The path that the object takes as it falls to the ground can be modeled by:

h =-16t^2 + 80t + 300

where

h is the height of the objects and

t is the time (in seconds)

At t = 0 , h = 300 ft

When the objects hit the ground, h = 0

then;

-16t^2+80t+300=0

For a quadratic equation: ax^2+bx+c=0         ......[1]

the solution for the equation is given by:

x = \frac{-b\pm \sqrt{b^2-4ac}}{2a}

On comparing the given equation with [1] we have;  

a = -16 ,b = 80 and c = 300

then;

t= \frac{-80\pm \sqrt{(80)^2-4(-16)(300)}}{2(-16)}

t= \frac{-80\pm \sqrt{6400+19200}}{-32}

t= \frac{-80\pm \sqrt{25600}}{-32}  

Simplify:

t = -\frac{5}{2} = -2.5 sec and t = \frac{15}{2} = 7.5 sec

Time can't be in negative;

therefore, the time it took the object to hit the ground is 7.5 sec

8 0
3 years ago
:Sarah and bryan went shopping and spent a total of 47:50. bryan spent 15.50 less than what sarah spent. How much did bryan spen
Elena L [17]

Answer:

its 32.00

Step-by-step explanation:

47.50

-15.50

---------

32.00

8 0
3 years ago
Let ​ f(x)=x2−16x+71 ​ .what is the vertex form of f(x)?what is the minimum value of f(x)? enter your answers in the boxes.
adell [148]
Your vertex is (8,7)

First find the x intercept
-2/2a

X = 16/2
X = 8

Substitute the value x and solve for y
Youd get 7

Hence
(8,7)
7 0
3 years ago
Read 2 more answers
Please help I will brainlist
tamaranim1 [39]

Answer:

C is what i think would be the perimeters of the squares.

Step-by-step explanation:

4 0
2 years ago
A flat surface of a solid figure
GalinKa [24]
Face or base if you are looking for a word
5 0
3 years ago
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