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3 years ago

Find the LCM of 5,10 and 15

Mathematics

2 answers:

Angelina_Jolie [31]3 years ago

5 0

Answer:

first write 5 ,10,15 .
And then after divides altogether with 5.
Then after answer comes 30

Kaylis [27]3 years ago

3 0

Write a few multiples of each number
5- 10,15,20,25,30
10-20,30,40,50
15-15,30,45,60

The first common multiple is 30

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I need lots of help with my homework

Vinil7 [7]

6) 1 and 1/4

7) 5/7

8)5/6

9) 1 and 7/12

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11) 1 and 1/6

12) 1 and 1/4

13) 1 and 7/22

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15) 1 and 5/12

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3 0

3 years ago

Read 2 more answers

What is the slope of a line that is perpendicular to the line v=-1/3x-6

bija089 [108]

If you are trying to find the slope of a line that is perpendicular to another line, you would need to change the sign and change it to the fraction's reciprocal.

m = $-\frac{1}{3}$

Change the sign of the slope:

$\frac{1}{3}$

Finally, make the reciprocal of the original slope (switching the numerator and denominator):

$\frac{3}{1}$

Simplify:

Final answer:

$m=3$

7 0

3 years ago

Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.

barxatty [35]

Answer:

x=9,-1 and $x^2+(-8)x=9$

Explanation:

we have been given with the quadratic equation $x^2-8x-9$

we compare the given quadratic equation with general quadratic equation

general quadratic is $ax^2+bx+c=0$

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant $D=b^{2}-4ac$

$D=(-8)^2-4(1)(-9)=100$

Now, to find the value of x

Formula is $x=\frac{-b\pm\sqrt{D}}{2a}$

Now, substituting the values we will get

$x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1$

And rewritting the given equation by shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

$x^2+bx=c$