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mash [69]
3 years ago
10

PLEASE HELP ME PLEASE HELP ME WITH MY MATH

Mathematics
1 answer:
ryzh [129]3 years ago
5 0
A. I would estimate that 7 in of the ribbon
B. the estimate would be high because the longer the ribbon is the more of the ribbon would have to be cut.
C. 11.7 - 5.25 = 6.45 iris has to cut 6.45 off the longer ribbon for the ribbons to be the same length.
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What are the properties of a rectangle ?
diamong [38]

Answer:

The fundamental properties of rectangles are: A rectangle is a quadrilateral The opposite sides are parallel and equal to each other Each interior angle is equal to 90 degrees The sum of all the interior angles is equal to 360 degrees.

Step-by-step explanation:

5 0
3 years ago
Please help!! I don’t understand how to do this problem
Oxana [17]

Answer:

D.

Step-by-step explanation:

y  = 3x \\ \frac{y}{3} = x \\   \\  \frac{3y}{3}  + 2y = 45 \\ y + 2y = 45 \\ 3y = 45 \\ y =  \frac{45}{3} \\ y = 15 \\  \\ x =  \frac{y}{3}  \\  =  \frac{15}{3}  \\  = 5

5 0
3 years ago
Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal plac
Fed [463]

Answer:

\theta=k\pi, \hspace{3}k\in Z\\\\ or\\\theta =2\pi k \pm arccos(\frac{1 }{8} ), \hspace{3}k\in Z\\

Step-by-step explanation:

Factor constant terms:

-2(-4sin(2\theta)+sin(\theta))=0

Divide both sides by -2:

sin(\theta)-4sin(2 \theta)=0

Expand trigonometric functions using the fact:

sin(2 \theta) =2 sin(\theta) cos(\theta)

So:

sin(\theta) -8sin(\theta)cos(\theta)=0

Factor sin(x) and constant terms and multiply both sides by -1:

sin(\theta) (8cos(\theta)-1)=0

Split into two equations:

(1)=8cos(\theta)-1=0\\\\(2)=sin(\theta)=0

For (1)

Add 1 to both sides and divide both sides by 8:

cos(\theta)=\frac{1}{8}

Take the inverse cosine of both sides:

\theta =2\pi k \pm arccos(\frac{1 }{8} ), \hspace{3}k\in Z

For (2)

Simply take the inverse sine of both sides

\theta = k \pi, \hspace{3}k\in Z

Therefore, the solutions are given by:

\theta=k\pi, \hspace{3}k\in Z\\\\ or\\ \theta =2\pi k \pm arccos(\frac{1 }{8} ), \hspace{3}k\in Z\\

8 0
3 years ago
PLEASE ANSWER ASAP LOOK AT THE PICTURE DUE IN 2 SECONDS !!!!!!!!!!!!!!
katrin2010 [14]
Answer: x> 30

Good luck !
3 0
3 years ago
Read 2 more answers
Two flat, circular plates are placed on a circular tabletop. The diameter of each plate is equal to the radius of the table top.
erastovalidia [21]
A=pR^2-2pr^2, since R=15 and r=7.5

A=225p-112.5p

A=112.5p

A≈353.25 ft^2
6 0
3 years ago
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