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Radda [10]
3 years ago
6

Solve for h, if the given equation is: s=2πr^2+2πrh solve

Mathematics
1 answer:
dolphi86 [110]3 years ago
5 0
First isolate the group with h in it
minus 2pir^2 from both sides
s-2pir^2=2pirh
divide both sides by 2pir
(s-2pir^2)/(2pir)=h
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How would the number 6,870,000,000,000,000 appear in scientific notation on a calculator screen
kvv77 [185]
687 to the 15 power I believe
5 0
3 years ago
(–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd) =
BabaBlast [244]

Answer:

4c² + 11cd + 5d

Step-by-step explanation:

(–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd)

-4c² + 7cd + 8d - 3d + 8c² + 4cd (opening bracket)

8c²-4c²+7cd + 4cd + 8d - 3d

= 4c² + 11cd + 5d

4 0
2 years ago
Read 2 more answers
Given: △ABC, m∠A=60°
kakasveta [241]

Answer:

perimeter = 28.68 cm

area = 15.48 cm^2

Step-by-step explanation:

1. complete the angles in the triangle. sum of all the angles in a triangle is 180 degrees.

therefore 180 - (60 +45) = 75

angle at B is 75 degrees

2. find the sides of the triangle using the sine formula for triangle

sin A/a = sin B/b = sin C/c

we have the angle at C and the side opposite C is also give, we can use that with any other

3. sin A/a = sin C/c

sin 60/a = sin 45/8

make a subject

a = 9.78 cm

4. sin A/a = sin B/b

sin 60/9.78 = sin 75/b

make b subject

b = 10.90 cm

with the three sides, we know that perimeter is the length around an object

adding all the lengths together will give the perimeter

perimeter = 10.90 + 8 + 9.78

= 28.68 cm

5. to find the area we need to find the high of the triangle since the expression for the area of a triangle is area =\frac{1}{2} bh

6. bisecting the side BC will give have as 4.89 cm

7. using Pythagoras theorem we can find the height of the traingle

c^2 = a^2 + b^2

8^2=(4.89)^2 + b^2

64 - 23.9121 = b^2

b= \sqrt{40.0879}

b =6.33 cm

insert this into the formula above will give the value for area

which is 15.48 cm^2

area = 1/2 (4.89)(6.33)

7 0
3 years ago
Consider the function represented by the equation y – x – 4 = 0. What is the equation written in function notation, with x as th
Contact [7]
The indepentent variable influences the dependent variable
the value of the depdendent variable is dependent on the value of the independent variable

y=f(x)
solve for y in terms of x

y-x-4=0
add x+4 to both sides
y=x+4
f(x)=x+4 is the answer
7 0
3 years ago
Which of the following equations is equivalent to 2log4x − log49 = 2
arsen [322]

Answer:

Step-by-step explanation:

3 0
2 years ago
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