Here's how to do dividing in a certain ratio:
-- You want to divide up the whole thing in the ratio of
4 parts, 5 parts, and 9 parts.
-- How many parts all together ? (4 + 5 + 9) = 18 parts all together.
-- The whole thing is 180, and that's 18 total parts.
So each part is (180/18) = 10 degrees.
4 parts = (4 x 10) = 40
5 parts = (5 x 10) = 50
9 parts = (9 x 10) = 90.
Check: (40 + 50 + 90) = 180 . yay!
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For the second one, I think there are some words missing.
Answer:
The value of the expression is -116
Step-by-step explanation:
Given
![Expression: 28b - 4c](https://tex.z-dn.net/?f=Expression%3A%2028b%20-%204c)
Required
Solve when b = -4 and c = 1
![Expression: 28b - 4c](https://tex.z-dn.net/?f=Expression%3A%2028b%20-%204c)
Substitute -4 for b and 1 for c
![Expression: 28*-4 - 4*1](https://tex.z-dn.net/?f=Expression%3A%2028%2A-4%20-%204%2A1)
![Expression = -28*4 - 4](https://tex.z-dn.net/?f=Expression%20%3D%20-28%2A4%20-%204)
![Expression = =112 - 4](https://tex.z-dn.net/?f=Expression%20%3D%20%3D112%20-%204)
![Expression: -116](https://tex.z-dn.net/?f=Expression%3A%20-116)
<em>The value of the expression is -116</em>
1 5/8
1 7/8 - 2/8= 8+7/8 - 2/8= 15/8 - 2/8= 13/8=
1 5/8 is the answer
For this case we can make the following rule of three:
9 1/2 m --------------> 28 1/2 rupees
26 1/3 m -------------> x
From here, we clear the value of x.
We have then:
Rewriting we have:
Answer:
samruth should pay 79 rupees to the shopkeeper
Answer:
The length of a rectangular garden is: 13 feet
Step-by-step explanation:
You have 2 lengths that are 2x-3 feet, and 2 widths that are x.
2x-3 + 2x-3 +x +x =42 feet
4x -6 +2x -42 feet
6x -6 = 42 feet
6x = 48 feet
x = 8 feet (so, 2x-3 = 16-3 = 13 feet)