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4 years ago

For smart people out there, answer this question, if u can! part A!

Mathematics

2 answers:

GaryK [48]4 years ago

6 0

Well D. represents -1/4 because there are 4 parts that make up -1, and D. is right before 0, so that makes it -1/4.
With my same explanation as before, you have gotten the second one correct; well done! =D
Well, I hope I helped! =D

Trava [24]4 years ago

5 0

-.75 because there are 4 tick marks. 4 = 1/4 for each since its on the third and before 0, it is -.75

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Find the length of l on the curve r(t)=5cos(3t)i-5sin(3t)j+3tk over the interval [3,7]

stealth61 [152]

$\mathbf r(t)=5\cos3t\,\mathbf i-5\sin3t\,\mathbf j+3t\,\mathbf k$
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4 years ago

The volume of a cone varies jointly as the height of the cone and the area of the base. The volume of a cone with height 30 cent

irina [24]

Answer:

V₂=28cm³

Step-by-step explanation:

The volume of a cone is $V=\frac{\pi r^{2}h}{3}$ , and h₁ = 30 cm but the base (Ba₁) is 14 cm², so

$V=\frac{Ba.h}{3}$ , where Ba= Base area

if h₂=7cm and Ba₂=12cm² then

$V_{1} =\frac{12cm^{2}.7cm}{3}=28cm^{3}$

If the volume of a cone varies jointly as the height of the cone and the area of the base, then we must find the relationship between the bases and heights of the cones

Ba₁*h₁ = 30cm*14cm² = 420cm³

Ba²*h²= 7cm*12cm² = 84cm³

420/84 = 5; ratio = 5 also

V₂=V₁/5 ⇒ V₂=140cm³/5 = 28cm³

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3 years ago

Read 2 more answers

PLS HELP! What is th range of the function shown on the graph?

7nadin3 [17]

Answer:

(0,7)

Step-by-step explanation:

The range of a function on a graph can basically be described as the vertical bounds for that graph. Since the graph does not go below y=0 and does not go above y=7, you can say that the range is (0,7).

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3 years ago

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BARSIC [14]

Answer:

x = 30 degrees

Step-by-step explanation:

cos (x) = sqrt(3)/2

We need to take the inverse of each side

cos ^-1( cos x) = cos ^-1 (sqrt(3)/2)

x = cos ^-1 (sqrt(3)/2)

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3 years ago

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Answer:

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Step-by-step explanation:

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