3 years ago

Use the discriminant to determine the number and type of solutions the equation has.

1 answer:

4 0

Discriminant = square root (b^2 -4*a*c)
square root (64 -4*1*12) =
square root (16) =
4
Therefore it has 2 rational soltions

You might be interested in

I need help with 29 c

Snowcat [4.5K]

The answer is b becuase my sister had that homework

7 0

3 years ago

If you take out a loan for $4,000 and you will owe $4,920 after 2 years, what is the rate of simple interest? Express your answe

11111nata11111 [884]

Answer:

11.5

Step-by-step explanation:

Simple interest formula:

$I=P\cdot r\cdot t,$

where

I = interest

P = principal

r = rate

t = time

In your case,

P = $4,000

I = $4,920 - $4,000 = $920

t = 2 years

So,

$920=4,000\cdot r\cdot 2\\ \\r=\dfrac{920}{2\cdot 4,000}=0.115$

The rate as decimal is 0.115 that is 11.5% as percent

5 0

3 years ago

When combining like terms what is -10r - 5r put together?

marysya [2.9K]

Answer:

-15r

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Given the formula solve for x.<br> y - y1 = m(x-x1)

Vlada [557]

Answer:

$y - y' = m(x - x') \\ (x - x') = \frac{(y - y')}{m} \\ x = \frac{(y - y')}{m} + x'$

5 0

3 years ago

a delivery truck is carrying and 8713 lb load of pet food. At a weighing station, the loaded truck weighs 17200 lb. What is the

netineya [11]

We know that the load is 8713 lbs.

The total weight (truck + load) is 17200 lb.

Then, we can calculate the weight of the empty truck as:

$\begin{gathered} L=8713 \\ W=L+T=17200 \\ \Rightarrow T=W-L \\ T=17200-L=17200-8713=8487 \\ \end{gathered}$

Answer: the empty truck's weight is 8487 lb.

T: empty truck's weight

W: total weight (loaded truck's weight)

L: Load

The equation is:

T = W - L

6 0

1 year ago