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3 years ago

What is the area of this figure?

Mathematics

2 answers:

finlep [7]3 years ago

8 0

Find the area of the 4 triangles.

12*10/2=60. There are two of the same dimensions, so the area so far is 120

12*18/2=108. There are also 2 of these, to the area of the bottom half is 216.
120+216=336.

lord [1]3 years ago

6 0

Two triangle areas of:

10*24/2+18*24/2

120+216

336 u^2

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What are the partial products of 8*1,126?

Genrish500 [490]

Answer:

The sides of the rectangle can then be divided into parts to reveal partial products that make up the total product. This helps students develop the flexibility and conceptual understanding required to build fluency with basic facts and strategies for multiplication of larger numbers.

Step-by-step explanation:

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3 years ago

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Serhud [2]

Graph A its the beat answer

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3 years ago

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Nikolay [14]

-1, -1 I think is the answer

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3 years ago

John can jog twice as fast as he can walk. He was able to jog the first mile to his grandmas house but then he got tired and wal

statuscvo [17]

Answer:

12 mph

Step-by-step explanation:

The relationship between jogging speed and walking speed means the time it takes to walk 4 miles is the same as the time it takes to jog 8 miles. Then the total travel time (0.75 h) is the time it would take to jog 1+8 = 9 miles. The jogging speed is ...

(9 mi)(.75 h) = 12 mi/h . . . average jogging speed

Check

1 mile will take (1 mi)/(12 mi/h) = 1/12 h to jog.

4 miles will take (4 mi)/(6 mi/h) = 4/6 = 8/12 h to walk.

The total travel time is (1/12 +8/12) h = 9/12 h = 3/4 h. (answer checks OK)

_____

Comment on the problem

Olympic race-walking speed is on the order of 7.7 mi/h, so John's walking speed of 6 mi/h should be considered quite a bit faster than normal. The fastest marathon ever run is on the order of a bit more than 12 mi/h, so John's jogging speed is also quite a bit faster than normal. No wonder he got tired.

7 0

3 years ago

Given the following geometric sequence, find the 12th term: {2, -4, 8, ...}.

BaLLatris [955]

2 times what = -4?
-2 does
-2 x 2 = -4

-4 time what = 8?
Again, -2.
-2 x -4 = 8

You could do this over and over again or make a table, or you can make a function.
f(n) = f(1) • r $^{n-1}$
f(1) in this case is 2.
f(n) = 2 • r $^{n-1}$
r is rate of change, which is -2.
f(n) = 2 • -2 $^{n-1}$
To find the 12th number in the sequence, just substitute n for 12.
f(12) = 2 • -2 $^{12-1}$
f(12) = 2 • -2 $^{11}$
-2^11 = -2048
2 x -2048 = -4096
So the 12th number in the sequence will be -4096.

3 0

3 years ago