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Alexxandr [17]
2 years ago
8

Whats (2x+4)(-x-4)? plz help me on this question

Mathematics
1 answer:
pentagon [3]2 years ago
3 0

Answer:

-2x^{2}-12x-16

Step-by-step explanation:

(2x+4)(-x-4)

-2x^{2}-12x-16

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Explain a real life situation where you may use trig ratios to find measure in right triangles.
OLEGan [10]
One example is if you wanted to measure the height of a tall building. You'll need to measure the distance from where you're standing to the base of the building. You'll also need the angle of elevation. To get the angle of elevation, start by looking completely horizontal, then tilt upward until your eyeline reaches the top of the building. Once you have those two things (the side and angle) you can use the tangent ratio to find the height. This is because

tan(angle) = opposite/adjacent

where in this case
angle = angle of elevation
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adjacent = distance from your position to the base of the building

It takes a bit of algebra, but the opposite side can be solved for. You'll most likely need a calculator to compute the tangent ratio.

5 0
3 years ago
ACCORDING to the rate of electricity charge, the minimum charge up to 20 unit is Rs 80 and the cost per unit from 21 units to 25
azamat

Answer:

180

Step-by-step explanation:

let x = total units of electricity after 250 units

the total units of electricity consumed can be determined using the formula below

80 + 7.3x = 1248

7.3x = 1248 - 80

7.3x = 1168

divide both sides of the equation by 7.3

x = 1168 / 7.3

x = 160

total electricity consumed = 160 + 20 = 180

160

6 0
2 years ago
PLEASE ANSWER THIS QUESTION
Marta_Voda [28]

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3 0
2 years ago
Express in the form n : 1. Give n as a decimal. 8:16​
soldi70 [24.7K]

Answer:

8:16 can be written as 1:2.

Now, 1:2 can be written as 0.5:1.

It is in the form of n:1 where n is 0.5.

brainliest if im correct? :)

Step-by-step explanation:

8 0
2 years ago
The object below is made of solid plastic. It is a cylind
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