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2 years ago

I need help I don't really understand

Mathematics

2 answers:

kicyunya [14]2 years ago

3 0

The sum of all has to equal 180 so solve: (x+10)+(3x-5)+x=180
5x+5=180
5x=175
x=35
hope this helps

gogolik [260]2 years ago

3 0

Answer:

<em>x</em> = 35°

Step-by-step explanation:

Here is my work :) did it on paper so sorry it's low quality.

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Hurry please!!! Fast response

AlladinOne [14]

Answer:

$SA= \frac{2}{3} \pi rl+16 \pi r^2$

Step-by-step explanation:

Surface area of the original cone

$SA= \pi r l + \pi r^2... (1)$

When, radius is quadrupled and slant height is reduced to one sixth

$i. e. \: \:r = 4r\: \: \&\:\: l= \frac{1}{6}l$

Plug the above values of r and $l$ in equation (1), new surface area becomes:

$SA= \pi (4r)\times \frac{1}{6} l+ \pi (4r)^2$

$SA= \frac{4}{6} \pi rl+16 \pi r^2$

$\huge \purple {\boxed {SA= \frac{2}{3} \pi rl+16 \pi r^2}}$

8 0

2 years ago

PLZZ HURRY!!Its due in 30 minutessss

babunello [35]

Step-by-step explanation:

in option c

rectangle have four right angled and two pair of parallel side

in option b

only one pair of parallel side

5 0

2 years ago

Please solve this equation. Thank you!<br><br>38x-12y = (6+2n)x + (4-n)y

Elis [28]

Step-by-step explanation:

the answer is in the above image

3 0

2 years ago

Read 2 more answers

Find the equations of the tangents to the curve x=9t2+3, y=6t3+3 that pass through the point (12,9).

Xelga [282]

Answer:

The equation will be " $y=x-3$ ".

Step-by-step explanation:

Given:

Points (12, 9) = (x, y)

⇒ $x=9t^2+3$

then,

$\frac{dy}{dt}=18t$

or,

⇒ $y=6t^3+3$

then,

$\frac{dy}{dt}=18t^2$

⇒ $\frac{dy}{dx}=\frac{18t^2}{18t}$

$=t$

By using the point slope form.

The equation of tangent will be:

⇒ $y-9=1(x-12)$

$y-9=x-12$

$y=x-12+9$

$y=x-3$

4 0

2 years ago

Omar makes a total of $51.75 selling brownies and muffins at a bake sale if he sells 16 brownies for $2.25 each how many muffins

telo118 [61]

Answer:

He can make 9 Muffins

Step-by-step explanation:

16*2.25=36

51.75 - 36=15.75 Subtract the total number of selling he made by how much he made with the brownies

15.75/1.75=9 Divide the number you got after subtracting by by how many he is going to sell each of then

8 0

2 years ago

I need help I don't really understand​

I need help I don't really understand