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3 years ago

I need help with this

Mathematics

1 answer:

noname [10]3 years ago

5 0

Answer:

the second one

Step-by-step explanation:

When subtracting a negative, the negative turns to a positive, so in this case, -14- -8 would be the same as -14 + 8

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If 1 kg of milk had 0.264 kg of fat, then find the amount fat in 12.5 kg of milk.

beks73 [17]

1 kg--> 0.264 kg fat

:. 12.5 kg--> (0.264*12.5) 3.3 kg fat

Mark me brainliesttt :))

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3 years ago

Pls help! What is mSN ?

Lapatulllka [165]

Answer:

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Step-by-step explanation:

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3 years ago

A new airport is in its planning phase. One particular challenge is that there are several tall buildings in the vicinity. In pa

mixer [17]

Answer:

Could an airplane take off and clear this tall building? YES

Step-by-step explanation:

Trigonometry

The building and the ground form a right (90°) angle. The path of the airplane (assumed a straight line) completes the right triangle.

The takeoff angle of the plane θ=15° has the height of the building (450 feet) as the opposite side and the horizontal distance from the end of the runway (2500 feet) as the adjacent side.

The tangent of θ is defined as the following ratio:

$\displaystyle \tan\theta=\frac{\text{opposite leg}}{\text{adjacent leg}}$

$\displaystyle \tan \theta=\frac{450}{2500}$

$\displaystyle \tan \theta=0.18$

Calculating the inverse tangent function:

$\theta=\arctan 0.18$

$\theta\approx 10^\circ$

This means the angle needed to clear the tall building is about 10° and it's within the maximum airplane's takeoff angle.

Could an airplane take off and clear this tall building? YES

8 0

3 years ago

A plane flies 1.4 hours at 150 mph on a bearing of 10. It then turns and flies hours at the same speed on a bearing of . How far

Gnesinka [82]

Answer:

The answer is "1035.76 miles"

Explanation:

The aircraft flies at 120 mph for 1.5 hours at a $10^{\circ}$ bearing, then flies at the very same speed at $100^{\circ}$ bearings for 8.5 hours.

However an angle of $100-10 = 90^{\circ}$ between displacements

First shifts $= 1.5 \times 120 = 180\ miles.$

Second shift $= 8.5\times 120 = 1020\ miles.$

These two shifts are at $90^{\circ}$ and therefore the final shift is:

$\to \sqrt{180^2+1020^2}=1035.76 \ miles$

4 0

3 years ago

Are braces are used in interval notation or roster notation?

antoniya [11.8K]

In Mathematics, braces ( {} )are used to symbolize the group of mathematical terms, commonly as the outmost measurement in a difficult expression. Braces are used in roster notation. Wherein within the braces there are a set of elements, which are separated by commas after each element. The set may be a set of whole numbers, or a set of natural numbers, or even a set of integers. While in Interval Notations, brackets and parentheses are used to indicate, whether the endpoints are left out or contained within.

7 0

3 years ago