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Alina [70]
2 years ago
10

Which equations are true?

Mathematics
2 answers:
bija089 [108]2 years ago
8 0

Answer:

B is correct

Step-by-step explanation:

-(-x) = x, because a double negative like this equals a positive.

Therefore, you are actually saying -x+x= 0 which is true.

azamat2 years ago
3 0

Equation B. is true for all values of x.

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Which represents the inverse of the function f(x) = 4x?
Natali5045456 [20]

Answer:

f^-1 (x) = x/4

Step-by-step explanation:

3 0
3 years ago
Ana is choosing a pillow for her bed. The probability that the pillow is encased in microfiber is 0.5 . The probability that the
Ymorist [56]

Answer:

P(A or B) = P(A) + P(B) - P(A and B) = 0.5 + 0.7 - 0.3 = 0.9

Step-by-step explanation:

The equation we should use to calculate the addition of probabilities is:

P(A or B) = P(A) + P(B) - P(A and B)

Notice that if we just sum P(A) + P(B), our result would be wrong, because we would sum the intersection of those events two times.

So, in this case, if we call 'A' the pillow being encased in microfiber and 'B' the pillow being filled with memory foam, we have that:

P(A) = 0.5

P(B) = 0.7

P(A and B) = 0.3

So the addition of both probabilities is:

P(A or B) = 0.5 + 0.7 - 0.3 = 0.9

3 0
3 years ago
£3000 is invested at 4% compound interest per annum. What is the value of the investment after 3 years?
djverab [1.8K]
£3000 x 0.4 to the power of 3= £192
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4 0
2 years ago
Simply. If the solution is not a real number enter not a real number rotate picture answer all 3 please
yuradex [85]

Answer:

13. \frac{\sqrt[5]{x^4} }{x}.

14. v = \pm3\sqrt{5}

15. 2.

Step-by-step explanation:

13. x^{1/5} * x^{-2/5}

= x^{1/5 + (-2/5)}

= x^{1/5 - 2/5}

= x^{-1/5}

= \frac{1}{x^{1/5}}

= \frac{x^{4/5}}{x^{1/5 + 4/5}}

= \frac{x^{4/5}}{x}

= \frac{\sqrt[5]{x^4} }{x}.

14. v^2 - 45 = 0

v^2 = 45

\sqrt{v^2} = \pm\sqrt{45}

\sqrt{v^2} = \pm\sqrt{3^2 * 5}

v = \pm3\sqrt{5}.

15. \sqrt[3]{2} * \sqrt[3]{4}

= \sqrt[3]{2 * 4}

= \sqrt[3]{2 * 2 * 2}

= \sqrt[3]{2 ^3}

= 2.

Hope this helps!

7 0
2 years ago
Divide 3983 /4 give quotient and remainder
alukav5142 [94]

Answer:

quotient = 995

remainder = 3

Step-by-step explanation:

4 0
2 years ago
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