All categories

3 years ago

Need help...

Mathematics

2 answers:

Delvig [45]3 years ago

5 0

2 / (1/4) =
2 * 4 =
8 total students

11111nata11111 [884]3 years ago

4 0

Carol gave a piece of paper to 8 students.

8 times 1/4 = 2 sheets of paper that Carol originally had.

You might be interested in

Se lanza un objeto desde una plataforma.

jasenka [17]

Answer:

6 seconds

Step-by-step explanation:

The question in English is

An object is thrown from a platform.

Its height (in meters), x seconds after launch, is modeled by:

h(x)=-5x^2+20x+60

How many seconds after the launch does the object reach the ground?

Let

x ----> the time in seconds

h(x) ---> the height of the object

we have

$h(x)=-5x^2+20x+60$

we know that

When the object hit the ground the height is equal to zero

For h(x)=0

we have

$-5x^2+20x+60=60$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

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

in this problem we have

$-5x^2+20x+60=60$

$a=-5\\b=20\\c=60$

substitute in the formula

$x=\frac{-20\pm\sqrt{20^{2}-4(-5)(60)}} {2(-5)}$

$x=\frac{-20\pm\sqrt{1,600}} {-10}$

$x=\frac{-20\pm40} {-10}$

$x=\frac{-20+40} {-10}=-2$

$x=\frac{-20-40} {-10}=6$

The solution is x=6 sec

The he object reach the ground at x=6 seconds

7 0

3 years ago

Trigonometry ratio of multiple angles

lys-0071 [83]

Answer:

See Attached

Step-by-step explanation:

See Attached for proof of RHS = LHS

3 0

3 years ago

George spent exactly one dollar for some 5 cent stamps and some

Temka [501]

Answer:

He bought 3.3 cents

Step-by-step explanation:

I hope I am right

3 0

3 years ago

What are exponents? they are very hard for me

stira [4]

This is an example hope this helps

7 0

2 years ago

A regular polygon has 20 sides the measure of an exterior angle of polygon is

mote1985 [20]

Answer:

198 degrees

Step-by-step explanation:

Such a shape is called a 20-gon, such shapes have an interior angle of 162. Hence, the exterior angle = 360 (Complete angle) - 162 (The interior anlge) = 198 degrees, Hope my answer helps you, Thank you, and please add me as brainliest! Thanks

5 0

3 years ago