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2 years ago

A=b=c then find the value of (a+b+c) ^2/a^2+b^2+c^2

Mathematics

2 answers:

bagirrra123 [75]2 years ago

8 0

The Answer Is 3a^2 3b^2 3c^2

Since all the variables equal each other, you may pick one variable to copy in the equation.

${a}^{2} + a^{2} + {a}^{2} = 3 {a}^{2}$

And since they're the same numbers, squaring a will have no effect in the equation.

grandymaker [24]2 years ago

3 0

I’m answering this to get more questionsbbbn

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Can somebody help me find the slope of this problem ??

andreev551 [17]

Answer:

The slope is 3/4

Please correct me if I am wrong please and thank you

Step-by-step explanation:

I use the slope formula $\frac{y2-y1}{x2-x1}$

Plug in (2,1) and (-2,-2)

1-(-2)/2-2

= 3/4

7 0

2 years ago

Read 2 more answers

I need help please!!!!

Luba_88 [7]

The first two is wrong, the last two is one of the right ones, I think it’s c

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3 years ago

Which expression is equivalent to (sin x + 1)(sin x − 1)? A. cos2x B. -cos2x C. cos2x + 1 D. cos2x − 1 E. -cos2x + 1

Semenov [28]

ANSWER

$- \cos^{2} x$

EXPLANATION

The given expression is

(sin x + 1)(sin x − 1)

Note that:

$(x + 1)(x - 1) = {x}^{2} - 1$

This implies that,

$( \sin \: x + 1)( \sin \: x - 1) = \sin^{2} x - 1$

We can factor -1 on the right hand side to get,

$( \sin \: x + 1)( \sin \: x - 1) = - (1 - \sin^{2} x )$

Note that from the Pythagorean Identity

$1 - \sin^{2} x = \cos^{2} x$

We apply this identity to obtain:

$( \sin \: x + 1)( \sin \: x - 1) = - \cos^{2} x$

The correct choice is B

4 0

3 years ago

Please help having trouble!

zmey [24]

Answer:

Option C is the correct choice that is $y$

Step-by-step explanation:

As this is a multiple choice question we will reduce the options and work on it with the given points $(0,-2),(-2,-3)$

Note:We know that $\leq ,\geq$ where there is $=$ sign associated with it have a straight line graph there is no breaking in the line.

And when there is simply we have a dashed line when we plot it on a graph.

So option B and D are discarded.

Now one-by one we will put the values $(x,y)\ (-2,3)$ to know which equation it satisfies.

If we put $y=3$ then $x=-2$ .

So working with option A.

$y$

Plugging the values.

$3$

And we know that $x$ must be equal to $-2$ so this is not the right answer.

We are left with only one choice that is C .

So option C is the correct option of the above inequality.

7 0

3 years ago

A salesperson's weekly paycheck is 50% more than a second salesperson's paycheck. The two paychecks total $1625. Find the amount

USPshnik [31]

Answer:

The amount of each person's pay check =

a = First person's pay check = $1083.33

b = Second person's pay check = $541.67

Step-by-step explanation:

Let first sales person's pay check = a

The second sales person's pay check = b

A salesperson's weekly paycheck is

50% more than a second salesperson's paycheck.

Hence,

First pay check (a) = a

Second paycheck (b) = 0.5 of a

= 0.5a

The two paychecks total $1625.

a + b = $1625

a + 0.5a = 1625

1.5a = 1625

a = 1625/1.5

a =$ 1083.3333333

a is approximately = $1083.33

Since

0.5a = b

0.5 × 1083.3333333 = b

$541.66666667 = b

b = approximately = $541.67

Therefore, the amount of each person's pay check approximately to the nearest cent =

a = First person's pay check = $1083.33

b = Second person's pay check = $541.67

6 0

3 years ago

A=b=c then find the value of (a+b+c) ^2/a^2+b^2+c^2​

A=b=c then find the value of (a+b+c) ^2/a^2+b^2+c^2