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larisa86 [58]
3 years ago
15

The sum of two numbers is 20. One number is 4 less than the other. Find the numbers

Mathematics
1 answer:
exis [7]3 years ago
6 0

Answer:8 and 12

Step-by-step explanation: 8 is 4 less than 12 and 12 and 8 equals 20

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Which rule can be used to find the output numbers in this table
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An input-output table, like the one shown below, can be used to represent a function. Each pair of numbers in the table is related by the same function rule. That rule is multiply each input number
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3 years ago
(csc x - 1) (csc x + 1)
victus00 [196]
<h2>Explanation:</h2>

Here we have the following expression:

(csc x - 1) (csc x + 1)

So we need to extend this. Remember that the difference of squares tells us:

(a-b)(a+b)=a^2-b^2

So here:

a=cscx \\ \\ b=1

Thus:

(csc x - 1) (csc x + 1)=csc^2x-1 \\ \\ \\ But: \\ \\ cscx=\frac{1}{sinx} \\ \\ \\ Then: \\ \\ csc^2x-1=\frac{1}{sin^2x}-1=\frac{1-sin^2x}{sin^2x}=\frac{cos^2x}{sin^2x}=cot^2x \\ \\ \\ Finally: \\ \\ \boxed{(csc x - 1) (csc x + 1)=cot^2x}

4 0
3 years ago
Write the coordinates of the vertices after a reflection across the line x= -3
anzhelika [568]

(Please vote me Brainliest if this helped!)

  1. C' (-3, -6)
  2. D' (-3, 1)
  3. E' (0, -6)
3 0
3 years ago
A parabola intersects the x-axis at x=−4 and x=8.
cupoosta [38]

Answer:

C. x=2

Step-by-step explanation:

The axis of symmetry divides the parabola into two equal parts. FRom point x=-4 to x=8, the difference is 12 units and the centre is6 units on each side. Using a number line, the axis of symmetry is at point x=2

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3 years ago
Read 2 more answers
Please help, I will give brainliest to whoever helps!
jeka94
This is for problem 54
6 0
3 years ago
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