3 years ago

BRAINLIEST IF CORRECT

Mathematics

2 answers:

weqwewe [10]3 years ago

6 0

Answer: 111.

Step-by-step explanation: 3 times 111= 333

GarryVolchara [31]3 years ago

6 0

The answer for your question question is 111.

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An airplane is preparing to land at an airport. It is 42,000 feet above the ground and is descending at the rate of 3,300 feet p

Fudgin [204]

Answer:

7 minutes

Step-by-step explanation:

From the question :

Descent = ascent

Initial height * descent rate = initial position * ascent rate

Plane on ground is at an initial position or height of 0

42000 - 3300t = 0 + 2700t

Where, t = time

-3300t - 2700t = 0 - 42000

-6000t = - 42000

t = 42000 / 6000

t = 7 minutes

3 0

3 years ago

Please help!!!!!

vampirchik [111]

Answer:

Step-by-step explanation:

Consider the quadratic equation, we have

$ax^2+bx+c=0$

Dividing the equation by a, we get

$x^2+\frac{b}{a}x+\frac{c}{a}=0$

Put $\frac{c}{a}$ on the other side,

$x^2+\frac{b}{a}x=\frac{-c}{a}$

Add $(\frac{b}{2a})^2$ on both the sides,

$x^2+\frac{b}{a}x+(\frac{b}{2a})^2=\frac{-c}{a}+(\frac{b}{2a})^2$

completing the square, we have

$(x+\frac{b}{2a})^2=\frac{-c}{a}+(\frac{b}{2a})^2$

Now, solving for x,

$x+\frac{b}{2a}={\pm}\sqrt{\frac{-c}{a}+(\frac{b}{2a})^2}$

$x=\frac{-b}{2a}{\pm}\sqrt{\frac{-c}{a}+(\frac{b}{2a})^2}$

Multiply right side by $\frac{2a}{2a}$ ,

$x=\frac{-b{\pm}\sqrt{b^2-4ac}}{2a}$

which is the required quadratic formula.

8 0

4 years ago

Read 2 more answers

SOMEONE PLEASE HELP I WILL MARK BRAINLIEST

Snowcat [4.5K]

Answer:

Hi help in what?

Step-by-step explanation:

5 0

3 years ago

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What is the solution to the equation?

joja [24]

........................................d

5 0

4 years ago

What is the product of 1 1/2 and -1 1/4 enter your answer as a mixed number in simplified form

Anastaziya [24]

The answer is -1 7/8 in lowest terms.

7 0

3 years ago