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3 years ago

-3/-4(8x-12)=5x-2 how do I solve this

Mathematics

2 answers:

natta225 [31]3 years ago

4 0

The answer would be x equals 7

ohaa [14]3 years ago

3 0

1 Two negatives make a positive
\frac{3}{4}(8x-12)=5x-2
4

3
(8x−12)=5x−2

2 Simplify \frac{3}{4}(8x-12)
4

3
(8x−12) to \frac{3(8x-12)}{4}
4

3(8x−12)

\frac{3(8x-12)}{4}=5x-2
4

3(8x−12)
=5x−2

3 Factor out the common term 44
\frac{3\times 4(2x-3)}{4}=5x-2
4

3×4(2x−3)
=5x−2

4 Simplify 3\times 4(2x-3)3×4(2x−3) to 12(2x-3)12(2x−3)
\frac{12(2x-3)}{4}=5x-2
4

12(2x−3)
=5x−2

5 Simplify \frac{12(2x-3)}{4}
4

12(2x−3)
to 3(2x-3)3(2x−3)
3(2x-3)=5x-23(2x−3)=5x−2

6 Expand
6x-9=5x-26x−9=5x−2

7 Add 99 to both sides
6x=5x-2+96x=5x−2+9

8 Simplify 5x-2+95x−2+9 to 5x+75x+7
6x=5x+76x=5x+7

9 Subtract 5x5x from both sides
6x-5x=76x−5x=7

10 Simplify 6x-5x6x−5x to xx
x=7x=7

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A metallic spherical ball of radius 14 cm is being melted and recast it into spherical balls of radius 2 cm. How many spherical

mojhsa [17]

Volume of sphere = 4/3 x pi x r^3

Volume of large sphere:

4/3 x 3.14 x 14^3 = 11488.21 cubic cm

Volume of smaller sphere:

4/3 x 3.14 x 2^3 = 33.49 cubic cm

Number of small spheres = volume of large sphere/ volume of small sphere

11488.21 / 33.49 = 343.03

Round to 343 small spheres

4 0

2 years ago

8x-5y=21 simultaneous linear equation<br>2x+9y=-5

olya-2409 [2.1K]

Answer:

$x=2$ and $y=-1$

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

$8x-5y=21$ Equation:1

$2x+9y=-5$ Equation:2

Solving equation multiply equation 2 with 4 on both the sides

$8x+36y=-20$ Equation 3

Subtracting Equation:3 from Equation:1

$8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1$

Putting value of 'y' in Equation:2 which will give the value of x

$2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2$

8 0

3 years ago

There is no solution to the equation cscx=0.<br> True or False

Svetradugi [14.3K]

Answer:

True

Step-by-step explanation:

First, we need to recognize that

$csc(x)=\frac{1}{sin(x)}$

Now, we can try to solve

$\frac{1}{sin(x)} =0$

Multiply each side by $sin(x)$

$1=0*sin(x)\\\\1=0$

As we end up with an answer that cannot be true, we know that there is no solution.

Another method to solve this would be graphing the function $y=csc(x)$

When graphed, it can be seen that there is an asymptote at x=0 meaning that there is no value for x=0.

4 0

2 years ago

Read 2 more answers

Which function has the domain x>or= -11

iogann1982 [59]

I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:
$y = \sqrt{x + 11}$
Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.

6 0

3 years ago

4 divided by 5 over 9

erastova [34]

Answer:

0.08888888

hope this helps please mark as brainliest:)

5 0

3 years ago