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True [87]
3 years ago
10

10. Evaluate the expression (ab) for a = 2 and b = 5.​

Mathematics
2 answers:
Sveta_85 [38]3 years ago
5 0

Answer:

10

Step-by-step explanation:

(5*2)=10

stepan [7]3 years ago
3 0

Answer:

10

Step-by-step explanation:

Since a = 2 and b = 5, we need to multiply them to get the answer for (ab).

(ab) = 2(5) = 10

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Two boards, one four inches wide and the other six inches wide, are nailed together to form an X. The angle at which they cross
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Answer:

The area of the unpainted region on the four inch board = 160·√3 in.²

Step-by-step explanation:

Here we have that the boards are crossing each other on their flat sides Therefore, when the boards are separated, the area of the unpainted region is the area of a parallelogram

The dimensions of the formed parallelogram are;

Interior angles = 60° and 120° (adjacent angles of a parallelogram)

Height, h of parallelogram formed = 4 inches

From the angle of crossing of the parallelogram, we have;

Angle between the width or perpendicular cross section of the 6 inches board and the angle of crossing of the two boards = 90° - 60° = 30°

Therefore, length of base, b of the parallelogram formed by the unpainted region is given as follows;

b = \frac{60}{cos(30)}  = 40\cdot \sqrt{3} \ inches

Therefore, the area of the parallelogram = b × h = 4 × 40·√3 = 160·√3 in.²

Hence, the area of the unpainted region on the four inch board = 160·√3 in.².

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3 years ago
Write an<br> explicit formula for an, the nth term of the sequence 2, -1, –4, ....
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Answer:

a(n) = a(1) -3(n-1)

Step-by-step explanation:

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Question
ANTONII [103]

The approximate area of the park on the grid is: E. about 40 km² to 50 km².

<h3>How to Find the Approximate Area on a Coordinate Grid?</h3>

The number of square on a coordinate grid that is covered determines the area covered. We can make an estimate by counting how many of this square on the coordinate grid that is covered, then find out the area depending on how much square area each grid represents.

In the coordinate plane given, which shows a park, we are told that each of the square on the grid equals 1 k = square kilometer.

The number of each of these squares we can find that is covered by the park on the grid is: 48 squares.

Therefore, the area of 48 squares on the grid = 48 × 1 = 48 km². Since not all squares are fully covered by the park, we can state that the approximate area of the park on the grid is: E. about 40 km² to 50 km².

Learn more about the approximate area on a grid on:

brainly.com/question/368985

#SPJ1

7 0
1 year ago
Hint: Plug each number into the formula a^2 + b^2 = c^2. Then see which set of numbers balances out.
Anni [7]

Answer:

A

Step-by-step:

a^2+ b^2 = c^2

if we try A

6^2+8^2 = 10^2 => 64+36  = 100

7 0
2 years ago
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