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3 years ago

Plz help it’s due tonight!!!

Mathematics

1 answer:

Nutka1998 [239]3 years ago

8 0

D. Is the ans
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Find the total surface area of this cone.

julsineya [31]

Answer:

A = πr² = B

A = π(8)² = B

A = (3.14)(64) = B

A = 200.96 m = B

A = πrl + B

A = π(8)(25) + 201

A = 628 + 201

A = 829 m

7 0

3 years ago

Calculate the area, in square units, bounded by g(x)=4x+8 and f(x)=x2+19x+62 over the interval [−9,−6].

Anettt [7]

Try this solution (see the attachmed pictures), modify the design according to the local requirements.

Note, the points (-6;-16) and (-9;-28) are the intersection points of the parabola and the line, given in the condition.

3 0

4 years ago

A surveying team set up some equipment 104104 ft from the base of a tree in order to sight the top of the tree. From ground leve

jarptica [38.1K]

Answer:

Relative error = 0.0254 %

Step-by-step explanation:

Given details

Height of equipment from base is 104 ft

Elevation angle is 27.5 degree

From figure we have

$tan\theta = \frac{x}{104}$ .........1

$tan(27.5) = \frac{x}{104}$

x = 54.13 ft

differentiating 1st eq wrt x

$\frac{d}{dx} tan\theta = \frac{d}{dx} [\frac{x}{104}]$

$sec^2\theta \frac{d\theta}{dx} = \frac{1}{104}$

Taken $d\theta \ as \Delta x \ and\ dx = \Delta x$ for minute change

$\Delta x = 1.5% x$

$= 0.015 \times 54.13 = 0.8119 ft$

from $sec^2 \theta \frac{d\theta}{dx} = \frac{1}{104}$

$\Delta \theta = \frac{1}{104 sec^2 \theta} \Delta x$

$\Delta \theta = \frac{1}{104 \times 1.115} 0.8119$

$\Delta \theta = 0.007$

Reltaive error $= \frac{\Delta \theta}{\theta} \times 100$

$= \frac{0.007}{27.5}\times 100$

Relative error = 0.0254 %

4 0

3 years ago

Please help me guys : please please.You put a yam in the oven after 45 minutes you take it out let f (t ) be the temperature of

Westkost [7]

A]. f(0)=65 means that when you placed the yam in oven the yams temp was 65 degrees Fahrenheit

B]. f(5) > f(60) meaning the temp of the yam 5 minutes after put in the oven was less than its temperature 60 min after put in the oven

✅✅✅ make sure you have part B written correctly though

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3 years ago

there are 18 boys and 12 girl in math class. what is the ratio of girls to total students. A. 18:30 B. 12:30 C. 30:12 D. 30:18 2

zmey [24]

Answer:

1. B

2. B and C

3.C

4.B the answer is 238 but i guess the rounded

Step-by-step explanation:

3 0

3 years ago

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