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2 years ago

Q and R are independent events. if P(Q)= 1/4 and P (R)= 1/5, find P(Q and R)

Mathematics

1 answer:

Setler79 [48]2 years ago

3 0

Answer:

1/4 * 1/5 = 1/20

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Determine what the product of two irrational numbers will be in each of these cases and show your work.

Mandarinka [93]

Step-by-step explanation:

✓2 × ✓2 = ✓2×2 = ✓4 = 2

✓5 × ✓7 = ✓5×7 = ✓35

✓2 × ✓18 = ✓2×18 = ✓36 = 6

✓2 × ✓6 = ✓2×6 = ✓12 = ✓4 ×✓3 = 2✓3

8 0

3 years ago

Find the error (-8x^2y^2)^2= -64x^4y^4

ExtremeBDS [4]

Answer:

$(-8)^2\neq-64$

Step-by-step explanation:

Using the distributive property to expand, we have

$(-8x^2y^2)^2=(-8)^2(x^2)^2(y^2)^2.$

Squaring each term, we have

$(-8x^2y^2)^2=64x^4y^4.$

The mistake was that $8^2=64,$ not $-64.$ Using the fact that $8^2=64,$ the right answer would be

$\boxed{64x^4y^4}$ .

3 0

2 years ago

Read 2 more answers

Which equation can be used to solve for x in the following diagram?<br> 7xº<br> 11x°

telo118 [61]

Answer:

7x° + 11x° = 90°

(Required equation)

Step-by-step explanation:

7x° + 11x° = 90°

(complementary angles)

18x° = 90°

18x = 90

x = 90/18

x = 5

8 0

2 years ago

How do you do this one?

sammy [17]

Multiply 18 and 24 then put the answer on the first block!

7 0

2 years ago

Identify the inverse of the following.

posledela

Answer:

$f^{-1}(x)=\sqrt{\frac{1}{8}(-x+4)}$

Step-by-step explanation:

Given function is,

f(x) = -8x² + 4

Step to find the inverse of the function,

Step 1

Write the function in the form of an equation,

y = -8x² + 4

Step 2

Interchange the variables 'x' and 'y',

x = -8y² + 4

Step 3

Solve the equation for y,

x = -8y² + 4

x - 4 = -8y²

-x + 4 = 8y²

y² = $\frac{1}{8}(-x+4)$

$y=\sqrt{\frac{1}{8}(-x+4)}$

Therefore, inverse of the function f(x) will be,

$f^{-1}(x)=\sqrt{\frac{1}{8}(-x+4)}$

3 0

2 years ago