Work out the surface area of this cylinder.
Diameter = 7 cm

Height = 12 cm

Answer:

90

Step-by-step explanation:

a triangle's angles all add up to 180. take 51 and 39 away from 180 and you get 90

Answer: 90 degrees

Step-by-step explanation:

Theorem:

a+b+c=180 degrees

39 degrees + 51 degrees + x degrees = 180 degrees

39 + 51 = 90

180 - 90 = 90

Answer:

Step-by-step explanation:

If we define the line QR to be some variable of distance 'x', we can use the relationship of cosine to figure out the length of QR.

Remember, cosine is adjacent of the angle divided by the hypotenuse of the angle. So, if we take this x value over the longest side (hypotenuse), we get the value of cos(theta).

cos(25) = x/7

Multiply both sides by 7 to get:

7*cos(25) = x

Let your calculator do the work to get:

x = 6.3

Answer:

86 its the same thing on both sides if im wrong then 90?

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

1) first there are a few rules we need to know:

a) the sum of any two sides of a triangle is always larger than the 3rd side

b) the difference between any two sides of a triangle is always smaller than the 3rd side;

hence,

3+4=7

4-3=1

triangle 3,4,5 follows all the rules,

triangle 13,2,11:

11+2=13

the sum of any two sides must always be GREATER than the 3rd side-so this is not an option

triangle 10,4,5

5+4=9

9<10

not an option

Answer:

[tex]CD = 12.6866616739cm[/tex]

[tex]CD \approx12.7cm[/tex]

Step-by-step explanation:

[tex]CB = a[/tex]

[tex]AB = b[/tex]

[tex]AC = c[/tex]

[tex] {c}^{2} = {a}^{2} + {b}^{2} [/tex]

[tex] {a}^{2} = {c}^{2} - {b}^{2} [/tex]

[tex]a = \sqrt{ {c}^{2} - {b}^{2} } [/tex]

[tex]a = \sqrt{ {12}^{2} - {6}^{2} } [/tex]

[tex]a = \sqrt{144 - 36} [/tex]

[tex]a = \sqrt{108} [/tex]

[tex]CB = \sqrt{108} [/tex]

[tex] \sin(D) = \frac{opposite}{hypotenuse} [/tex]

[tex] \sin(D) = \frac{CB}{CD} [/tex]

[tex] \sin(55) = \frac{ \sqrt{108} }{CD} [/tex]

[tex](CD) \sin(55) = \frac{ \sqrt{108} }{CD} (CD)[/tex]

[tex](CD) \sin(55) = \sqrt{108} [/tex]

[tex] \frac{(CD) \sin(55) }{ \sin(55) } = \frac{ \sqrt{108} }{ \sin(55) } [/tex]

[tex]CD = \frac{ \sqrt{108} }{ \sin(55) } [/tex]

[tex]CD = 12.6866616739cm[/tex]

[tex]CD \approx12.7cm[/tex]

Answer:

$12.75

Step-by-step explanation:

Do $71.75 - $8.00. Next divide that by 5. Here you should get the "each hour" amount.

Answer: $12.75

Step-by-step explanation:

He paid ^^ per hour - $8.00

Answer: D

Step-by-step explanation:

D can be solved using 300/6 = x/10 making it a proportion

Answer:

y = 6/5x - 5

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

Answer:

18 because

12% = money saved / total earned money * 100

Step-by-step explanation:

Answer:

29.25 Interest

Step-by-step explanation:

Take the formula: I=PRT

The principal is 650.00, 4.5 is the rate, 1 year is the time, We do not know the interest.

Change the rate, 4.5 to 0.045 to help solve the problem.

Times 650.00, 0.045, and 1 together.

You will get 29.25, Which is the answer!

Booyah! You are done.

Hope this helps!

Answer:

(x, y) -----> (x + 3, y - 4)

Step-by-step explanation:

3 to the right means add 3 to x.

4 down means subtract 4 from y.

(x, y) -----> (x + 3, y - 4)

its c

Step-by-step explanation:

rational because when you divide both values you get 1, it's a rational number

hope it helps!

Answer:

a

Step-by-step explanation:

4X2 is 8 8x2 is 16 16x2 is 32

Answer:

1/x^7

Step-by-step explanation:

Answer:

1/x^7

Step-by-step explanation:

Answer:

it should be C. i hope this helps

Answer:

It's d

Step-by-step explanation:

i did it and got it right

Answer:

3,147.44828

Step-by-step explanation:

[tex] \frac{6}{87} \: of \: 45638 \\ \\ = \frac{6}{87} \times 45638 \\ \\ = 6 \times 524.574713 \\ \\ = 3,147.44828[/tex]

Answer:

Its the first option

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

5x+2=7x−4  

5x+2−7x=7x−4−7x

−2x+2=−4  

−2x+2−2=−4−2

−2x=−6

-2x/2=-6/2

x=3

Answer:40

Step-by-step explanation:

100+10+10=3x

3x=120

Divide both sides by 3

X=40

Answer:

40

Step-by-step explanation:

add 100+10+10 and divide it by 3

Answer:

Zero slope

Step-by-step explanation:

Answer:

1.3

Step-by-step explanation:

Answer:

$83.74

Step-by-step explanation:

6% tax is $4.74

$79.00 + 4.74 = $83.74

Answer:

All the options are equivalent except;

4 + y

Step-by-step explanation:

The question relates to the number of ways the operation of a multiplication operation can be represented algebra

1) The coefficient of a variable is a multiplier of the variable

Therefore;

4y = 4 × y

2) When given two numbers or variables in a mathematical expression that are separated by parenthesis, then it is an indication that the two numbers are meant to be multiplied

Therefore;

(4)(y) = 4 × y

3) The dot symbol, '·', placed between two numbers, a number and a variable or two variables, is a representation of multiplication of the two quantities

Therefore;

4·y = 4 × y

However, multiplication, and addition are different mathematical operations that produce different results when applied;

Therefore;

4 + y ≠ 4 × y.

Answer:

Y=-4

Step-by-step explanation:

y = 3x + 2

y = 3(-2) + 2

y = -6 + 2

y = -4

Answer:

Y=5

Step-by-step explanation:

Y=2+3

So that why y is 5

Please rate my comment I am new and I would lie to help others thankyou ♥

Answer:

m=-37

Step-by-step explanation:

m-35=-72

m=-37

Answer:

900 km/h

Step-by-step explanation: