Answer:
The number of fast songs is 64 and the number of slow songs is 32
Step-by-step explanation:
∵ Y represents the number of fast songs
∵ x represents the number of slow dance songs
∵ John gets to play a total of 96 songs at his school dance
→ That means the sum of x and y is 96
∴ x + y = 96 ⇒ (1)
∵ He wants twice as many fast songs, y, as slow dance songs, x
→ That means y is twice x
∴ y = 2x ⇒ (2)
→ Substitute y in equation (1) by equation (2)
∵ x + 2x = 96
∴ 3x = 96
→ Divide both sides by 3 to find x
∴ 
∴ x = 32
→ Substitute the value of x in equation (2) to find the value of y
∵ y = 2(32)
∴ y = 64
∴ The number of fast songs is 64 and the number of slow songs is 32
Answer:
1. y = 31/3
2. y = 3/2x
Step-by-step explanation:
1.
2 + 3y = 33
3y = 33 - 2
3y = 31
y = 31/3
2.
3x - 2y = 0
-2y = -3x
2y = 3x
y = 3/2x
Hope this helps
Brainliest is Appreciated
Answer:
1,771.6 inches.
Step-by-step explanation:
As there are 13 girls and 15 boys in the class, there are a total of 28 students (13 + 15). Thus, while the average height of these is 161 cm, the total height in centimeters of all the students is 4.508 centimeters (161 x 28).
Now, 1 centimeter is equal to 0.393 inches. Thus, since 4.508 x 0.393 equals 1,771.6, the height in inches of the entire class measured together is 1,771.6 inches.
-3(3h-1)<span>≤-7h-5
-9h+3</span><span>≤-7h-5
-9h+7h</span><span>≤-5-3
-2h</span><span>≤-8
h</span><span><span>≥</span>4
</span>Sign changes because you multiply with negative both sides.
