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3 years ago

When you would not need to use the quadratic formula

1 answer:

3 0

Answer: When the quadratic equation can be factored or solved by completing the square, you do not need to use the quadratic formula

Step-by-step explanation: In the form ax² + bx + c

Whenever a is 1 (implied, no coefficient of x²) and the constant, c, is a multiple of numbers whose sum or difference is equal to b, factoring is much quicker and easier than using the quadratic formula.

Even when there is a coefficient of x², there are procedures to find the factors and solve for x without resorting to the quadratic formula.

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Plz help me with this

gladu [14]

Answer:

2nd one

Step-by-step explanation:

(x*x*x*x*x*x*x*x*x)

or x^9

6 0

3 years ago

Read 2 more answers

I need help with this please!

12345 [234]

Answer:

ok. i don't understand this so could u be more specific and tell me what's ur problem

4 0

2 years ago

Two trains left the station traveling in opposite directions. The distance Train A traveled is modeled by the function d(t)=81t

stira [4]

Answer:

Option A - The distance Train A traveled in 1 h is equal to the distance Train B traveled in 1 h.

Step-by-step explanation:

Given : The distance Train A traveled is modeled by the function $d(t)=81t$

where d represents distance in miles and t represents time in hours.

To find : How does the distance Train A traveled in 1 hour compare to the distance Train B traveled in 1 hour?

Solution :

Distance traveled by Train A in 1 hour is

$d(t)=81t$

$d(t)=81(1)=81$

Distance traveled by Train B in 1 hour is

$d(t)=81t$

$d(t)=81(1)=81$

or for B, we have 324 miles in 4 hours. If that is at a constant speed, it travels 324/4 = 81 miles in one hour

Therefore, The distance Train A traveled in 1 h is equal to the distance Train B traveled in 1 h.

Hence, Option A is correct.

8 0

2 years ago

A bag contains 5 red marbles, 7 blue marbles and 4 green marbles if two marbles are drawn out of the bag what is the probability

Ann [662]

Answer:

0.083 probability that both are red

Step-by-step explanation:

total marbles = 5 + 7 + 4 = 16

Two marbles drawn out.

Find P(red, and red) = (5/16) * (4/15) = 1/(3*4) = 1/12 = 0.08333

8 0

3 years ago

Help now asap! The stack consists of five rows of boxes that are all the same size.

gayaneshka [121]

Answer:

Option (a) 55

Step-by-step explanation:

No. of boxes=1²+2²+3²+4²+5²=55

4 0

2 years ago