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3 years ago

0.6239 as a fraction

Mathematics

1 answer:

anastassius [24]3 years ago

7 0

6239/10,000 or 6239/10^4
Hope I helped.

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PLEASE HELP ME NOW URGENT

timama [110]

ANSWER

$y = 3 \pm \sqrt{21}$

EXPLANATION

The quadratic equation is:

${y}^{2} - 6y - 12 = 0$

Group variable terms:

${y}^{2} - 6y = 12$

Add the square of half, the coefficient of y to both sides.

${y}^{2} - 6y + ( - 3) ^{2} = 12 + ( - 3) ^{2}$

${y}^{2} - 6y + 9= 12 + 9$

The LHS us now a perfect square trinomial:

${(y - 3)}^{2}= 21$

Take square root:

$y - 3 = \pm \sqrt{21}$

$y = 3 \pm \sqrt{21}$

The first choice is correct.

8 0

3 years ago

Read 2 more answers

Two mechanics worked on a car. The first mechanic worked for 5

ArbitrLikvidat [17]

Answer:

$50 and $115

Step-by-step explanation:

We know that,

the sum of the two rates = $165 per hour

Let x and (165 - x) represent the $/hour of the 15hr and 5hr mechanics respectively.

Then combining their charges together to get:

$(x*15)hour+(165-x)*5 hour=1325$

Solving for x to get:

$15x-5x+825=1325$

$10x=500$

$x=50$

So the rate charged per hour by one mechanic is $50 and for the other mechanic = $(165-50)=$ $115.

8 0

3 years ago

Bella brought candy to give

Len [333]

She brought 48 pieces. The equation is x/12=4

7 0

3 years ago

Read 2 more answers

Help Ffndhdhdhdhdhdgdh

Galina-37 [17]

Answer:

8.1

Step-by-step explanation:

Since we dealing with right triangles, we are going to use pythagoern theorem.

$a^{2}$ + $b^{2}$ = $c^{2}$ , where a and b are the two legs and c is the longest side or the slanted side( known as hypotunese.)

Let plug in the numbers

4^2+ b^2=9^2

16+b^2=81

b^2=65

sqr root of 65 is about 8.1

5 0

3 years ago

Please help me SIMPLIFY this:

joja [24]

The answer would be

3 \sqrt{x} 5 -4[/tex]

8 0

3 years ago