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3 years ago

HELP ON THESE ASAP!!!!

Mathematics

2 answers:

iVinArrow [24]3 years ago

7 0

Answer:

Step-by-step explanation:

ikadub [295]3 years ago

6 0

Second one is w^2 - 81

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ASHA 777 [7]

Answer:

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3 years ago

Y= x+2 -1 if a)y>0 b)y<0 c)y=0

kvv77 [185]

Answer:

Step-by-step explanation:

I may be wrong,If i am i apoligize fr the inconvenience!!

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3 years ago

I don't understand how to answer this

IgorLugansk [536]

Answer:

$\large\boxe{D)\ \dfrac{1}{2}\pi\ feet}$

Step-by-step explanation:

Step 1:

Calculate the circumference of both circles.

The formula of a circumference:of a circle with radius r:

$C=2\pi r$

The circle R:

$C_R=2\pi\left(\dfrac{2}{3}\right)=\dfrac{4\pi}{3}\ ft$

The circle S:

$C_S=2\pi\left(\dfrac{3}{4}\right)=\dfrac{3\pi}{2}\ ft$

The length of the intercepted arc for circle R is

$l=\dfrac{4\pi}{9}\ ft$

Step 2:

Calculate what the part of the circumference of the circle R is the intercepted arc:

$\dfrac{4\pi}{9}:\dfrac{4\pi}{3}=\dfrac{4\pi}{9}\cdot\dfrac{3}{4\pi}=\dfrac{1}{3}$

The same length of the circumference of the circle S is searched for the length of the intercepted arc for circle S.

Step 3:

Calculate the length of the intercepted arc for circle S:

$\dfrac{1}{3}\cdot\dfrac{3\pi}{2}=\dfrac{1}{2}\pi\ ft$

4 0

3 years ago

t takes Audrey 35 hour to paint 25 square yards of wood to be used for making shelves. How many square yards can she paint in 1

Luden [163]

Set up a porportion,

3/5 hours / 2/5 square yards
1 hour / x square yards

simplify by cross multiplying

3/5x = 2/5(1).
3/5x = 2/5.
 3/5/3/5x = 2/5/3/5
x = 10/15
x = 2/3

so she can paint 2/3 square yards in 1 hour. hope this helps!

5 0

4 years ago

Read 2 more answers

Use the number line below, where RS equals 3 y plus 2 , ST equals 2 y plus 7 , and RT equals 10 y minus 11 .

docker41 [41]

3y + 2 + 2y + 7 = 10y - 11
5y + 9 = 10y - 11
20 = 5y
4 = y

RS = 14
ST = 15
RT = 29

4 0

4 years ago

Read 2 more answers

HELP ON THESE ASAP!!!!​

HELP ON THESE ASAP!!!!