All categories

2 years ago

- ay + 4bx - b; a = -1, b = 2, x = 5, y = -6

Mathematics

1 answer:

Scilla [17]2 years ago

8 0

Answer:

Consider the given equation.

+4bx−(a

−b

)=0

+4bx+b

−a

(2x+b)

−a

(2x+b−a)(2x+b+a)=0

2x+b−a=0 Or 2x+b+a=0

a−b

Or x=−

a+b

You might be interested in

#23-6: The pool concession stand made $5,800 in June and $6,300 in July. What is the percent of increase in sales? Round the ans

katrin [286]

Answer:

8.6%

Step-by-step explanation:

To find the percent change, you will need to compute the positive difference and then divide the difference by the original (the older amount).

So the positive difference will be obtain by doing larger minus smaller:

6300

- 5800

-----------

500

The older amount was 5800.

So 500/5800 is the answer as a un-reduced fraction.

I'm going to reduce it by dividing top and bottom by 100:

500/5800 = 5/58

5/58 is the answer as a reduced fraction.

5 divided by 58 gives=0.086206897 in the calculator .

Approximately 0.0862 is the answer as a decimal.

To convert this to a percentage, multiply it by a 100:

8.62%

Rounded to the nearest tenths is 8.6%

-------------

So 5800+5800(.0862) should be pretty close to 6300 (not exactly though since we rounded).

5800+5800(.0862)=6299.96 using the calculator.

8 0

3 years ago

A commercial jet can fly 868 miles in 2 hours with a tailwind but only 792 miles in 2 hours into a headwind. Find the speed of t

erik [133]

Answer:

The speed of the jet in still air is 415 mph and the speed of the wind is 19 mph

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x -----> the speed of the wind in miles per hour

y ----> the speed of the jet in still air in miles per hour

we know that

With a tailwind

$y+x=\frac{868}{2}$

$y+x=434$ ----> equation A

With a headwind

$y-x=\frac{792}{2}$

$y-x=396$ ----> equation B

solve the system of equations A and B by elimination

Adds equation A and equation B

$y+x=434\\y-x=396\\------\\y+y=434+396\\2y=830\\y=415$

Find the value of x

$y+x=434$

$415+x=434$

$x=434-415$

$x=19$

therefore

The speed of the jet in still air is 415 mph and the speed of the wind is 19 mph

6 0

3 years ago

Read 2 more answers

Which of the follow would make the statement true when inserted on the line?

balandron [24]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

PLEASEEEE HELLLP REALLL ANSWERSSSS two stores both purchase cellphones from the manufacturer for $180 each. store a marks up the

dexar [7]

Answer:

A: $342 B: $297 easy peasy

7 0

3 years ago

Please help asap....

tino4ka555 [31]

Answer:

a d9x9x6xx0x8x7x7x

Step-by-step eaxplanation:

4 0

3 years ago