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3 years ago

What is the best first step in solving the equation 3x2 + 8x = -5?

1 answer:

5 0

I would assume it would be dividing both sides by three although if someone were to actually solve this I would say multiply 2 and 3 together first.

Hope this helps :)

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Factor -12x^6-60x^5-75x^4

lesya [120]

-12x^6 - 60x^5-75x^4.......GCF = 3x^4
3x^4(-4x^2 - 20x - 25)
3x^4(-2x - 5)(2x + 5) <==

6 0

3 years ago

What does the number 3.1968e+22 mean?

sattari [20]

You add them and then it would be 30.6898033492

8 0

4 years ago

In the Minnesota Northstar Cash Drawing, you pick five different numbers between 1 and 35. What is the probability of picking th

maw [93]

Answer:

$\frac{1}{324632}$ probability of picking the winning combination

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Since the order is not important, the combinations formula is used to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes:

The correct five numbers from a set of 5. So

$D = C_{5,5} = \frac{5!}{5!0!} = 1$

Total outcomes:

Five numbers from a set of 35. So

$T = C_{35,5} = \frac{35!}{5!30!} = 324632$

Probability:

$p = \frac{D}{T} = \frac{1}{324632}$

$\frac{1}{324632}$ probability of picking the winning combination

5 0

2 years ago

Which expression could be used to determine the cost of a $40 video game after a 15 percent discount?

r-ruslan [8.4K]

Answer:

(C)

Step-by-step explanation:

4 0

3 years ago

Tony bought 48 roses for $24. How much do 24 roses cost

kondor19780726 [428]

We know that:
48 roses costs $24
24 roses costs ?$
Step 1:
Use cross multiply
24×24=576
Last step:
Use division
576÷48=$12, so 24 roses costs $12. As a result, 24 roses costs $12. Hope it help!

3 0

4 years ago