Rays of light incident on a lens and parallel to the principal axis of the lens converge

Answers

Answer 1

Answer: So we want to know in which point do light rays that are incident on a lens and parallel to the principal axis converge. Rays parallel to the principal axis and are incident on a lens converge in the focal point of the lens. So the correct answer is focal point.

Answer 2

Answer:

The correct answer is:

Focal point.

Explanation:

The focal point of a lens is the point in space where parallel light rays meet after they pass through the lens. A perfect" lens sends all light rays through one focal point, which result in the clearest image.

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Find the x- and y-intercepts of the graph of 7x + y = 30. State each answer as an integer or an improper fraction in simplest form.

Answers

Answer: x-int: (30/7, 0) y-int: (0, 30)

Step-by-step explanation: first, isolate Y, y=-7x+30. after that substitue Y with 0 to find the Y-int and then X with 0 to find the X-int

Insert < ,>, or = between the pair of numbers to form a true statement. 0.32 and 0.35

Answers

Answer: 0.32 < 0.35

Think of it like saying 32 < 35. Then stick a decimal point in front of each number.

1+5=12 2+10=24 3+15=36 5+25=

Answers

5+25=48 becase you add 12 each time

Proper inverse operation 14 + 17 = 31

Answers

subtraction is the correct inverse operation because you want one number on one side and the others on the other side and since both 14 and 17 are positive you need to subtract to get them to the right side

Answer:

No inverse operation needed. There are no varables to solve for.

Step-by-step explanation:

Which of the following ratios are in proportion: a) 5, 25, 6, 30 b) 15, 40, 3,8 c) 8,15,5,9

Answers

Final answer:

In order to determine if ratios are in proportion, we need to check if the cross products of the ratios are equal. Parts a and b are in proportion, while part c is not.

Explanation:

In order for ratios to be in proportion, the cross products of the ratios must be equal. Let's check the ratios given:

a) 5/25 = 1/5 and 6/30 = 1/5, so these ratios are in proportion.

b) 15/40 = 3/8 and 3/8 = 3/8, so these ratios are in proportion.

c) 8/15 ≠ 5/9, so these ratios are not in proportion.

Therefore, the ratios in parts a and b are in proportion.

Learn more about ratios here:

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Which expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign?A square shaped traffic sign is shown with length of one side labeled as 8x minus 2.

Answers

Given:
square shaped traffic sign. side measure of 8x - 2

A square has 4 equal sides. To find the area of a square, simply square the measure of 1 side.

Area of a square = a²
A = (8x-2)²
A = (8x-2)(8x-2)
A = 8x(8x-2) - 2(8x-2)
A = 64x² - 16x - 16x + 4
A = 64x² - 32x + 4

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