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sergeinik [125]
3 years ago
8

V=u+at u=2 a=-5 t=1/2 work out the value of v

Mathematics
2 answers:
Alexxandr [17]3 years ago
6 0

Answer:   \bold{v=-\dfrac{1}{2}}

<u>Step-by-step explanation:</u>

v = u + at

Substitute u = 2, a = -5 , t = \dfrac{1}{2}

v=(2)+(-5)(\dfrac{1}{2})\\\\\\.\ =2 - \dfrac{5}{2}\\\\\\.\ =2\bigg(\dfrac{2}{2}\bigg)-\dfrac{5}{2}\qquad \text{need a common denominator to add fractions}\\\\\\.\ =\dfrac{4}{2}-\dfrac{5}{2}\\\\\\.\ =\boxed{-\dfrac{1}{2}}

Eddi Din [679]3 years ago
4 0

Answer:

- \frac{1}{2}

Step-by-step explanation:

Substitute the given values into the equation and evaluate

v = 2 + (- 5 × \frac{1}{2})

  = 2 - \frac{5}{2}

  = \frac{4}{2} - \frac{5}{2} = - \frac{1}{2}

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PLS HELP ,,,
LenKa [72]

The function, g(x), has a constant rate of change and will increase at a faster rate than the function f(x) for all the values of x.  

Given:

g(x) = 5/2 x -3 ..... (1)

f(x) = - 3.5 at x = 0

So, putting the value of x=0 in equation (1) for comparison. We get,

g(x) at x = 0

=> g(x) = 5/2 x (0) - 3

=> g(x) = -3

In this value of x function g(x) is faster than function f(x) having a value equal to -3.5.

Similarly, put x = 1 in equation (1) for comparison. We get,

=> g(x) = 5/2 x (1) - 3

=> g(x) = (5-6)/2

=> g(x) = -1/2

In this value of x function g(x) is faster than function f(x) having a value equal to -1.

Similarly, put x = 2 in equation (1) for comparison. We get,

=> g(x) = 5/2 x (2) - 3

=> g(x) = (5-3)

=> g(x) = 2

In this value of x function g(x) is faster than function f(x) having a value equal to 1.5.

Similarly, put x = 3 in equation (1) for comparison. We get,

=> g(x) = 5/2 x (3) - 3

=> g(x) = (15/2 - 3)

=> g(x) = 7.5 - 3

=> g(x) = 4.5

In this value of x function g(x) is faster than function f(x) having a value equal to 4.

Therefore, for all values of x function g(x) is faster than function f(x).

function f(x).

To learn more about the function visit: brainly.com/question/14996787

#SPJ1

8 0
1 year ago
Help please! I need the area of this given figure. The formula is A=1/2(b1+b2)h
Pie

Answer:

108 ft

Correct me, if I am wrong :)

have a great day!

Thanks!

8 0
3 years ago
Read 2 more answers
Sm1 please help me w this question!!!
Lady_Fox [76]

Answer:

The answer is A, (1,2).

Step-by-step explanation:

Hope this helps!

8x-4(x+1) = 0

x =1

y = 1 + 1

y = 2

(x,y) = (1,2)

2 = 1 + 1

8 x 1 - 4 x 2 = 0

Simplify

2 = 2

0 = 0

Solution = (1 , 2)

6 0
3 years ago
The total price of an article is $7.02, including tax. If the tax rate is 8%, what is the retail price of the article?
masya89 [10]
Lets price of article = x
Tax  is 8%  of article = 0.08x

x+0.08x=7.02
1.08x=7.02
x=7.02/1.08 
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The retail price is $6.50.
4 0
3 years ago
David hikes 2 ¼ miles in ½ an hour at this rate, how long will it take him to walk 18 miles?
8090 [49]
So in 30 min will hike 2 1/4 miles =9 of those 1/4 miles therefore in 10 min will hike 9/3 =3 of those 1/4 miles = 3/4 of a mile

3/4 mile in 10 min;
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6 miles in 80 min;
9 miles in 120 min;
12 miles in 160 min;
15 miles in 200 min;
18 miles in 240 min or 4 hours

5 0
3 years ago
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