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liubo4ka [24]
3 years ago
5

Express 28% as a (a) fraction in its lowest terins,

Mathematics
1 answer:
inn [45]3 years ago
3 0
7/25 is the lowest term
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Anyone know? Will mark brainliest!
Slav-nsk [51]

Answer:

I believe than answer is A make sure tho im only in 6 th grade

Step-by-step explanation:


4 0
4 years ago
Read 2 more answers
Find all the solutions in there interval (0,2pi) for cos5x=-1/2
oee [108]

Answer:

\frac{2\pi}{15},\frac{4\pi}{15},\frac{8\pi}{15},\frac{2\pi}{3},\frac{14\pi}{15}, \frac{16\pi}{15}, \frac{4\pi}{3},\frac{22\pi}{15}, \frac{26\pi}{15}, \frac{28\pi}{15}

Step-by-step explanation:

Solving trigonometric equations.

We are given a condition and we must find all angles who meet it in the provided interval. Our equation is

cos5x=-\frac{1}{2}

Solving for 5x:

5x=\frac{2\pi}{3}+2n\pi

5x=\frac{4\pi}{3}+2n\pi

The values for x will be

x=\frac{\frac{2\pi}{3}+2n\pi}{5}

x=\frac{\frac{4\pi}{3}+2n\pi}{5}

To find all the solutions, we'll give n values of 0, 1, 2,... until x stops belonging to the interval (0,2\pi)

For n=0

x=\frac{\frac{2\pi}{3}}{5}=\frac{2\pi}{15}

x=\frac{\frac{4\pi}{3}}{5}=\frac{4\pi}{15}

For n=1

x=\frac{\frac{2\pi}{3}+2\pi}{5}=\frac{8\pi}{15}

x=\frac{\frac{4\pi}{3}+2\pi}{5}=\frac{2\pi}{3}

For n=2

x=\frac{\frac{2\pi}{3}+4\pi}{5}=\frac{14\pi}{15}

x=\frac{\frac{4\pi}{3}+4\pi}{5}=\frac{16\pi}{15}

For n=3

x=\frac{\frac{2\pi}{3}+6\pi}{5}=\frac{4\pi}{3}

x=\frac{\frac{4\pi}{3}+6\pi}{5}=\frac{22\pi}{15}

For n=4

x=\frac{\frac{2\pi}{3}+8\pi}{5}=\frac{26\pi}{15}

x=\frac{\frac{4\pi}{3}+8\pi}{5}=\frac{28\pi}{15}

For n=5 we would find values such as  

x=\frac{\frac{2\pi}{3}+10\pi}{5}=\frac{32\pi}{15}

x=\frac{\frac{4\pi}{3}+10\pi}{5}=\frac{34\pi}{15}

which don't lie in the interval (0,2\pi)

The whole set of results is

\frac{2\pi}{15},\frac{4\pi}{15},\frac{8\pi}{15},\frac{2\pi}{3},\frac{14\pi}{15}, \frac{16\pi}{15}, \frac{4\pi}{3},\frac{22\pi}{15}, \frac{26\pi}{15}, \frac{28\pi}{15}

6 0
4 years ago
Find the solution<br> y+2x=17<br> y=x+2
Pavel [41]

Answer:

x=5, y=7. (5, 7).

Step-by-step explanation:

y+2x=17

y=x+2

-------------

x+2+2x=17

3x+2=17

3x=17-2

3x=15

x=15/3

x=5

y=5+2=7

4 0
3 years ago
You spending $144 for new sweaters,T-Shirts and pants.Sweaters cost $28,T-Shirts (t) cost $14 and pants (p) cost $23,each.Which
zepelin [54]

28s + 14t + 23p = 144

5 0
3 years ago
Identify all of the radii circle o
Olegator [25]

<em><u>Answer:</u></em>

The radii are OA , OB and OC

<em><u>Explanation:</u></em>

<u>The radius of the circle</u> is defined as the line joining between the center of the circle and a point that lies on the circumference of the circle

<u>In the given circle:</u>

The center is "O"

The three points that lie on the circumference are A, B and C

<u>Based on the above definition, the three radii would be:</u>

OA, OB and OC

Hope this helps :)

4 0
4 years ago
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