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Elza [17]
4 years ago
11

Help me please :( math scatter plot

Mathematics
1 answer:
kkurt [141]4 years ago
8 0
I saw your comment on another question ❤️
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Sean los ángulos a y B, donde la suma de la mitad de a mas la tercera parte de B es igual a 15. calcula el doble del cociente de
Schach [20]

Answer:

Supongo que tenemos dos ángulos A y B

"la mitad de A mas la tercera parte de B es igual a 15°" (también supongo que son grados)

A/2 + B/3 = 15°

A/2 = 15° - (B/3)

A = 30° - 2*(B/3)

Ahora queremos calcular:

2*sin(3*A)/cos(2*B)

pero podemos reemplazar A por lo que tenemos arriba:

2*sin(3*(30° - 2*(B/3)))/cos(2*B)

2*sin(90° - 2*B)/cos(2*B)

y como sabemos,  

Sin( 90° - x) = Sin(90°)*cos(-x) + cos(90°)*sin(-x) = cos(-x) = cos(x)

entonces:

2*sin(90° - 2*B)/cos(2*B) = 2*cos(2*B)/cos(2*B) = 2*1 = 2.

6 0
3 years ago
Evaluate. Write your answer as a fraction in simplest form.<br><br> 2 1/6 −(−8/3)+(−4 7/9)
Snezhnost [94]

Answer:

1/18

Step-by-step explanation:

first, you make the fraction a mixed number so 2 2/3.

second, the two minuses cancel each other out so 2 1/6 + 2 2/3

third, make the 2/3 from 2 2/3 into 4/6 so you can add it to the 2 1/6

fourth, add your 2 1/6 and your 2 4/6 to get 4 5/6.

that’s the first part: 2 1/6 -(-8/3) is equal to 4 5/6

then, since you’re adding a negative number, it’s basically subtracting the 4 7/9 from 4 5/6

first you subtract the whole numbers = 0

then, make the denominators the same: (6*9, common denominator is 54) so since you’re multipling the 9 from 7/9 by 6, also multiply the 7 by 6 to get 42. 42/54. do the same but with a 9 on the 5/6. you get 45/54

so now you can do 42/54 — 45/54 to get 3/54

54/3 is 18 so you can simplify to 1/18

7 0
3 years ago
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Which expression has the same value as the sum of 45 and 25?
MariettaO [177]
Is there any choices

8 0
3 years ago
Which is bigger 67/72 or 11/12
yaroslaw [1]

Answer:

\frac{67}{72}

Step-by-step explanation:

Just convert them into rounded decimals:

\frac{67}{72} = 0.9305555...

\frac{11}{12} = 0.523809...

7 0
4 years ago
The 25 students in Mr. Byers 6th grade class each donated $3.00 for Mr. Byers' end of year gift. When Julie went to purchase the
kramer
$95 is the answer if you add $20
4 0
3 years ago
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