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3 years ago

What are all the steps to solving a Quadratic Formula? (steps please)

1 answer:

4 0

Compose the quadratic condition in standard shape, ax2 + bx + c = 0. Recognize the values of a, b, c. Write the Quadratic Equation. At that point substitute within the values of a, b, c. Simplify. Check the arrangements.

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I need this done today whoever gets this correct gets brainliest!!! PLZZ HELPP MEE!!! hurryy!!

marshall27 [118]

I think it’s C , good luck .

3 0

3 years ago

Read 2 more answers

Negative54 dividing into negative2

leva [86]

-54 / -2 = 27

So yeah, 27 would be your answer.

Hope this helped :)

5 0

3 years ago

At a bus station, buses begin their routes at 6.am. The schedule for two of the buses is based on time intervals listen below-

Anastaziya [24]

Answer:

Part A: The two buses leave the bus station at 7 : 15 am

Part B: The steamboat travels 25 miles per hour

Step-by-step explanation:

* Lets explain how to solve the problem

Part A

- Buses begin their routes at 6 am at a bus station

- Bus A leaves every 75 minutes

- Bus B leaves every 15 minutes

- We want to know the next time Bus A and Bus B will leave the bus

station at the Same time

# Bus A

∵ Bus A leaves every 75 minutes

- Lets change 75 minutes to hours and minutes

∵ 1 hour = 60 minutes

∴ 75 minutes = 75/60 = 5/4

- Change 5/4 to mixed number

∵ 5/4 = 1 1/4

∴ 75 minutes = 1 1/4 hours

- Lets change 1/4 hour to minutes

∴ 1/4 × 60 = 15 minutes

∴ 75 minutes = 1 hour and 15 minutes

∵ Bus A leaves the station at 6 am

- Add 1 hour and 15 minutes to that time

∵ 6 + 1 : 15 = 7 : 15

∴ Bus A leaves the station nest time at 7 : 15 am

# Bus B

∵ Bus B leaves every 15 minutes

∵ Bus B leaves the station at 6 am

- Add 15 minutes to 6 am

∴ Bus B leaves the station next time at 6 : 15 am

- Add another 15 minutes for next time

∴ Bus B leaves the station next time at 6 : 30 am

- Add another 15 minutes for next time

∴ Bus B leaves the station next time at 6 : 45 am

- Add another 15 minutes for next time

∵ 15 + 45 = 60 ⇒ add 6 by 1 because 60 minutes = 1 hour

∴ Bus B leaves the station next time at 7 am

- Add another 15 minutes for next time

∴ Bus B leaves the station next time at 7 : 15 am

- The 2 buses leave the station at the same time again at 7:15 am

* The two buses leave the bus station at 7 : 15 am

Part B

- It takes a steamboat 12 hours to travel 300 miles

- We need to find how many miles it travels per hour

∵ The steamboat travels 300 miles in 12 hours

- Divide the distance by the time to find its rate

∵ 300 ÷ 12 = 25

- That means it travels 25 miles per hour

∴ The steamboat travels 25 miles per hour

3 0

4 years ago

A study is done to determine if students in the California state university system take longer to graduate, on average, than stu

Zanzabum

Answer:

Step-by-step explanation:

Base on the scenario been described in the question, we can use the following method to solve the given problem

Test the claim at 5% level of significance.

0: − ≤ 0

: − > 0

Since the population standard deviations are known we can use z-distribution.

Test statistic is

√

4.5 − 4.1

√

1.58112

100 +

100

= 2.14.

Critical value for 5% level of significance:

zcrit = 1.645.

We reject the null hypothesis at 5% level of significance because the test statistic = 2.14 is bigger than

critical value zcrit= 1.645. There is evidence to conclude that students in the California state university

system take on average longer to graduate, than students enrolled in private universities.

8 0

3 years ago

Describe and correct the error. x + 4 > 13

butalik [34]

Answer:

x=10

Step-by-step explanation:

13-4=9

For it to be bigger than 13, it has to be one more than 9 which is 10.

6 0

4 years ago