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aleksley [76]
2 years ago
5

Hows you day going:) When you woke up - Around lunch- Now-

Mathematics
1 answer:
Roman55 [17]2 years ago
4 0

Answer:

its going ok so far

Step-by-step explanation:

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Train travels at 3 hours if it's speed is 65 miles per hour. It takes the train 2.5 hours if it's speed is 78 per hour . Identif
seraphim [82]

Step-by-step explanation:

Let the original speed of the train be x km/h.

Time taken to cover a distance of 360 km =  360/x hours.

New speed of the train = (x+5) km/h.

Time taken to cover a distance of 360 km at new speed = 360/x+5 hours.

Since, the train takes 1 hour less time,

∴360/x - 360/ x+5 = 1

⇒360 (5) = x² + 5x

⇒1800 = x² + 5x

⇒x² + 5x - 1800 = 0

⇒x² + 45x - 40x - 1800 = 0

⇒x (x+45) - 40( x +45) = 0

⇒(x+45) (x-40) = 0

⇒x = (-45), 40

But since speed cannot be in negative.

∴x = 40 km/hr.

Hence, the original speed of the train is 40 km/h.

3 0
3 years ago
Read 2 more answers
kelly bought 1 yard of fabric . she bought 3/8 yard more than shannon . how many yards of fabric did shannon buy ?
fredd [130]
Shannon bought 5/8 yards of fabric
Hope this helps!!
8 0
3 years ago
Read 2 more answers
The __function is the most basic function in a family of functions.
Ivanshal [37]

Answer:

B. Parent

Step-by-step explanation:

A parent function is the simplest capacity of a group of functions that saves the meaning of the whole family.

Feel free to let me know if you need more help! :)

6 0
3 years ago
This is khan and I have 10 more problem academy. Some help please?
LenKa [72]

Answer:

67 degrees

Step-by-step explanation:

the shape is a tryangle so it will have the same angle measurements, just make sure you look if it has the slash next to the letter or not in the future

Hope this helps girly!!

7 0
3 years ago
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Which expressions are equivalent to the expression 32 ÷ (8 – 4)? Choose exactly two answers that are correct. A. 18 – 2 ÷ 2 B. 4
kap26 [50]
32 \div (8-4)=32 \div 4=8 \\ \\
A. \\
18-2 \div 2=18-1=17 \\ \\
B. \\
48 \div (10-4) = 48 \div 6=8 \\ \\
C. \\
15-21 \div 3=15-7=8 \\ \\
D. \\
36 - 15 \div 3 +1=36 - 5+1=31+1=32

B and C are equivalent to the expression.
3 0
3 years ago
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