Find the total of

1 answer:

3 0

The answer is B because the LCM of 8 and 9 is 72, which changes 4 5/8 to 4 45/72 and 2 2/9 to 2 16/72. 45/72+16/72 is 61/72 and then add the whole numbers.

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Is this statement true or false?

Galina-37 [17]

Answer:

True

Step-by-step explanation:

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6 0

2 years ago

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14. Write a two-column proof.

scZoUnD [109]

Given:

$\bold{ 8x=4y-20} \\\\ \bold{ y=13}$

Prove:

$\bold{x=4}$

Solution:

$\to \bold{8x=4y-20}..........(i)\\\\\to \bold{ y=13}........................(ii)$

Putting the value of equation (ii) into the equation (i):

$\to \bold{8x=4(13)-20}\\\\\to \bold{8x=52-20}\\\\\to \bold{8x=32}\\\\\to \bold{x=\frac{32}{8}}\\\\\to \bold{x= 4}\\\\$

putting the value x into the equation (i):

$\to \bold{8(4)=4y-20}\\\\\to \bold{32=4y-20}\\\\\to \bold{32+20=4y}\\\\\to \bold{52=4y}\\\\\to \bold{y=\frac{54}{4}}\\\\\to \bold{ y= 13.5}$

Therefore, the value of x= 4

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brainly.com/question/6219408

3 0

2 years ago

If 3a = cosec x and 3/a = cot x, find the value of 3(a2 - 1/a2)

insens350 [35]

$\csc(x) = \frac{r}{y} = \frac{3a}{1} \\ \cot(x) = \frac{x}{y} = \frac{3}{a} \\ y = a = 1 \\ \\ 3( {a}^{2} - \frac{1}{{a}^{2} } ) \\ 3( {1}^{2} - \frac{1}{ {1}^{2} } ) \\ = 0$