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Alex Ar [27]
3 years ago
7

What is the simplest form of this expression? 4(-m-1)-5

Mathematics
1 answer:
wel3 years ago
3 0

Answer:

-4m-9      Here is the answer :)

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6. The diagram on the right shows the cross-section of a cylindrical pipe with water lying in the bottom. a) If the maximum dept
riadik2000 [5.3K]

Answer:

404 cm³ Anyway... Look down here for my explanation.

Step-by-step explanation:

Let's Draw a line from the center of the circle to one of the ends of the chord (water surface) and another to the point at greatest depth on your paper. A right-angled triangle is formed too. The Length of side to the water-surface is 5 cm, the hospot is 7 cm.

We Calculate the angle θ in the corner of the right-angled triangle by: cos θ = 5/7 ⇒ θ = cos ˉ¹ (5/7)

44.4°, so the angle subtended at the center of the circle by the water surface is roughly 88.8°

The area shaded will then be the area of the sector minus the area of the triangle above the water in your diagram.

Shaded area 88.8/360*area of circle - ½*7*788.8°

= 88.8/360*π*7² - 24.5*sin 88.8°

13.5 cm²

(using area of ∆ = ½.a.b.sin C for the triangle)

Volume of water = cross-sectional area * length

13.5 * 30 cm³

404 cm³

6 0
1 year ago
What is 2 ¼ as an improper fraction?
kondor19780726 [428]
9/4 is the answer :)
6 0
2 years ago
Read 2 more answers
What multiplies to 378 and adds to -51
Oliga [24]
Your answer would be -9 & -42. 

Here's why ...
(-9)*(-42) A negative times a negative equals a positive (378).
Now, -9-42=-51 & you add these because you have two negatives.

Hope this makes sense & helps you ! (:


6 0
3 years ago
50 POINTS!!Different project management steps are initiating, planning, executing, monitoring and controlling, and closing a pro
garri49 [273]

Answer: Planning because you need to start somewhere if you dont then you dont have any of the other steps

Good luck lovie :)

8 0
3 years ago
Enter a fraction that is equivalent to 1/5 with a numerator of 8.
photoshop1234 [79]

Answer:

lol imagine

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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