2 years ago

10.) 1 and 2 in this diagram are___

Mathematics

1 answer:

Anastasy [175]2 years ago

3 0

Answer:

Step-by-step explanation:

they are complementary, they add to 90

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Please show all work with the answers please

kenny6666 [7]

Part A

The angle of elevation of the staire case is given by

$Angle\ of\ elevation=\tan^{-1}{ \frac{Vertical\ rise}{landing} } \\ \\ =\tan^{-1}{ \frac{14}{20} }\approx35^o$

Part B:

If the landing of each step is changed to 17 inches and the elevation of each step to 21 inches, the new angle of elevation for the staircase is given by

 $Angle\ of\ elevation=\tan^{-1}{ \frac{Vertical\ rise}{landing} } \\ \\ =\tan^{-1}{ \frac{17}{21} }\approx39^o$

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2 years ago

Sam went 300 feet below sea level. Ken is at an elevation of 100 feet. Write an inequality to compare their location

sattari [20]

-300>100 that is the answer because its below sea level

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2 years ago

2. Find the lateral area and surface area of the prism. 4 cm 5 cm 4 cm 3 cm

Vaselesa [24]

Answer:

Lateral = 48 cm squared and Surface area = 60 cm squared

Step-by-step explanation:

Lateral surface area = 4 x 4 + 5x4( Slope) + 4 x 3 (Cross section x2) = 48

Surface area: Lateral + 4x3(base)

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2 years ago

How many numbers are equal to the sum of two odd, one digit numbers

Paul [167]

Here is a list of the odd number paired

1+3, 1+5, !+7, and !+9 (there are 4 unique sums - 4, 6,8 and 10)
3+5, 3+7, 3+9 (notice I did not pair 3 with 1 and the the only new sum is 12)
5+7, 5+9 (the only new sum is 14)
7+9 (16 is a new sum)

The sums (no repeats) are 4,6,8,10,12,14 and 16 for a total of seven numbers.

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2 years ago

What is 22,000,000 in word form

Vlad1618 [11]

It is twenty-two million

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2 years ago

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