You have to divide 4 by 8 which = .5 and then u put the whole # before the decimal which will equal 4.5 , therefore knowing that 5 divided by 8 =0.625 does not help u write the decimal for 4 4/8 but the decimal for 4 4/8 is 4.5

8 0

3 years ago

Solve the equation, , using the quadratic formula.

N76 [4]

Answer:

$x=1\ or\ x=-\frac{1}{2}$

Step-by-step explanation:

To solve the given quadratic equation $2x^2-x-1=0$ you can apply the Quadratic formula, which is shown below:

$x=\frac{-b\±\sqrt{b^2-4ac}}{2a}$

Where:

$a=2\\b=-1\\c=-1$

Therefore, when you substitute values into the Quadratic formula shown above, you obtain the following solution:

$x=\frac{-(-1)\±\sqrt{(-1)^2-4(2)(-1)}}{2*2}$

$x=1\ or\ x=-\frac{1}{2}$

4 0

3 years ago

This is absolutely hard please help

DENIUS [597]

Given:

I = 1890

P = 7000

T = 6 years

1890 = 7000 x r x 6

1890 = 42000 * r

r = 1890 / 42000

r = 0.045 = 4.5%

please mark brainliest

8 0

3 years ago