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Leviafan [203]
3 years ago
11

Can you’ll Plzzz helpppp

Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
6 0

Answer:

8.Right angle 9. Straight 10.Acute 11.Acute 12. Right 13. Obtuse

Step-by-step explanation:

Some of these might be wrong so don't completely rely on me.

lozanna [386]3 years ago
5 0

Answer:

(҂‾ ▵▵▵‾)︻デ═一 \(˚▽˚'!)/

Step-by-step explanation:

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Please HELP MEEEE IM SO CONFUSED
kumpel [21]

Answer:

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6 0
3 years ago
Find the area of the region that lies under the parabola y=5x - x^2, where 1≤x≤4. I would definitely like to see some work :)
Elena L [17]

Answer:

  16.5 square units

Step-by-step explanation:

You are expected to integrate the function between x=1 and x=4:

  \displaystyle\text{area}=\int_1^4{(5x-x^2)}\,dx=\left.\left(\dfrac{5}{2}x^2-\dfrac{1}{3}x^3\right)\right|_{x=1}^{x=4}\\\\=\dfrac{5(4^2-1^2)}{2}-\dfrac{4^3-1^3}{3}=37.5-21=\boxed{16.5}

__

<em>Additional comment</em>

If you're aware that the area inside a (symmetrical) parabola is 2/3 of the area of the enclosing rectangle, you can compute the desired area as follows.

The parabolic curve is 4-1 = 3 units wide between x=1 and x=4. It extends upward 2.25 units from y=4 to y=6.25, so the enclosing rectangle is 3×2.25 = 6.75 square units. 2/3 of that area is (2/3)(6.75) = 4.5 square units.

This region sits on top of a rectangle 3 units wide and 4 units high, so the total area under the parabolic curve is ...

  area = 4.5 +3×4 = 16.5 . . . square units

4 0
3 years ago
Write and solve a proportion to find the height of the building.
slavikrds [6]

Write and solve an equation of ratios:


9 ft          22 ft

------- = -----------

h               99 ft


This is appropriate because h is greater than 9 ft.


cross-multiplying, we get 

9(99) ft^2 = 22*h*ft


Then h =40.5 ft (which is the height of the building)


7 0
3 years ago
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kozerog [31]
Can you retype this please? then i can help
3 0
3 years ago
3. A dozen donuts are usually sold for $12. They went on sale and now a dozen donuts are now $6. What was the percent decrease?
creativ13 [48]

Answer: 50 percent?

Step-by-step explanation: 6 is half of 12

6 0
3 years ago
Read 2 more answers
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