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3 years ago

Halp me plz.........................................

Mathematics

1 answer:

KengaRu [80]3 years ago

4 0

The second one. 4/6 and 2/3

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Solve 5kx + 6 = 7kx for x

ad-work [718]

Right now we have:
5kx + 6 = 7kx
First, divide both sides by k to eliminate that variable:
5x + 6 = 7x
Then subtract 5x from each side:
6 = 2x
Lastly, divide each side by 2 to solve for x:
3 = x
Hope this helps!

6 0

3 years ago

Read 2 more answers

Evaluate x2y for x = -3 and y = 2

padilas [110]

-3*2*2 = - 12
Multiply all to get the answer

8 0

4 years ago

Horses are measure in units called hands.One inch equals 1/4 hand.The average Clydesdale is 17 1/5 hands tall.What is th is heig

Mashcka [7]

(17.2 hand)*(1 in)/(0.25 hand) = 68.8 in

8 0

3 years ago

(3-4i)(-2-21) multiply

evablogger [386]

Answer:

-69 +92 i (here 'i' is imaginary value)

Step-by-step explanation:

step:-

Given (3-4 i)(-2-21)

on multiplication, we get

(3-4 i)(-2-21) = 3(-2) -3(21) - 4 i (-2) +4 i(21)

= -6 -63 + 8 i +84 i

= -69 +92 i

-69 + 92 i is a complex number.

real part x = -69

imaginary part y = 92

6 0

4 years ago

A rectangular pool is to be built on a lot that measures 20 m by 12 m. A wooden deck of uniform width, equal to the area of the

frutty [35]

The length and breadth(width) of the pool are

$l\approx15.7m\text{ and }b\approx7.7m$

Let

$l=\text{length of the side of the pool}\\b=\text{breadth of the pool side}\\w=\text{the width of the strip of deck surrounding the pool}$

From the question, we can build the following relationships

$l+2w=20\\b+2w=12$

subtracting to eliminate $w$ (we do not even need it!)

$l-b=8\\b=l-8$

we can also build another relationship from the question. Since the area of the strip equals the area of the pool:

$lb+lb=2lb=20\times 12\\lb=120$

We have two unknowns, $l$ and $b$ . Eliminate $b$

$lb=120\\l(l-8)=120\\l^2-8l-120=0$

If we solve the quadratic equation for $l$ , we get

$l=4+2\sqrt{34}\approx 15.7m$

and

$b=l-8\\b=(4+2\sqrt{34})-8\\b=2\sqrt{34}-4\approx7.7m$

The length and breadth(width) of the pool are

$l\approx15.7m\text{ and }b\approx7.7m$

Learn more about area here: brainly.com/question/1447350

7 0

2 years ago