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ddd [48]
3 years ago
15

Please help me with this problem

Mathematics
1 answer:
tigry1 [53]3 years ago
5 0

Answer:

A- 30,968 + 31,211

Step-by-step explanation:

Since 62,179 minus 31,211 is equal to 30968, 30968 plus 31,211 can be used to help check the answer for 62,179 minus 31,211.

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Simplify completely (x^2+x-12)/(x^2-x-20)÷(3x^2-24+45)/(12x^2-48x-60)
likoan [24]
<span>To simplify the expression, we can check if there are terms that are needed to be added or subtracted. In this case, there are none. We get the factors of 4 equations present in the expression. 
</span><span>x^2+x-12 = {3,-4}
</span><span>x^2-x-20 = {5,-4}
</span><span>3x^2-24+45 = {5,3}
</span><span>12x^2-48x-60 = {5,-1}</span> 

hence we cancel 5 and from numerator and denominator.

the answer is  (x+4)^2/ (x-5)*(x+1)
6 0
3 years ago
How do i find the intercepts of the equation -5x-4y=10
Y_Kistochka [10]

Answer:

To find the x intercept, let y=0. To find the y-intercept, let x=0. Hence, the x-intercept of the given equation is -2 and the y-intercept is -5/2.

Step-by-step explanation:

Let - 5x - 4y = 10 be the given equation.

Simplify the whole equation by dividing both sides by -1 :

  • 5x + 4y = -10

To get the x-intercept, simply let y=0 :

  • 5x + 4(0) = -10 (substitution)
  • 5x = -10           (evaluate)
  • x = -2               (simplify by dividing both sides of the equation by 5)

To get the y-intercept, simply let x=0 :

  • 5(0) +4y = -10  (substitution)
  • 4y = -10            (evaluate)
  • y = -10/4           (simplify by dividing both sides of the equation by 4)
  • y = -5/2            (simplify the fraction)
8 0
3 years ago
Why are mathematical proofs important?
Makovka662 [10]
One reason is so the teacher can actually see that your working the problem out

7 0
3 years ago
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Solve solve the following equations 2x (x minus 5) close + 3(x-2)=8+7(x-4)​
stiv31 [10]

Step-by-step explanation:

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<em>2</em><em>x</em><em>²</em><em>-10x</em><em>+</em><em>3</em><em>x</em><em>-</em><em>6</em><em>=</em><em>8</em><em>+</em><em>7</em><em>x</em><em>-</em><em>2</em><em>8</em><em>(</em><em>Group</em><em> </em><em>like</em><em> </em><em>terms</em><em>)</em>

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<em>2</em><em>x</em><em>²</em><em>-</em><em>7</em><em>x</em><em>-</em><em>7</em><em>x</em><em>=</em><em>-</em><em>2</em><em>0</em><em>+</em><em>6</em>

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2x²<em>-</em><em>x</em><em>=</em><em>1</em>

<em>2</em><em>x</em><em>=</em><em>1</em>

<em>x</em><em>=</em><em>½</em>

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7 0
2 years ago
What is the inverse of this function?
Andreas93 [3]

Step-by-step explanation:

f(x) = y = -1/2 × sqrt(x + 3), x >= -3

-2y = sqrt(x + 3)

4y² = x + 3

x = 4y² - 3

and now we need to rename x to y and y to x to make it a "normal" function :

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since in the original function x >= -3, this gave us y <=0.

and therefore (remember the x of the inverse function actually stands for the y of the original function) the limit for the inverse function is x <= 0.

so, again, the full answer is

f^-1(x) = 4x² - 3, x <= 0

8 0
2 years ago
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