Answer:
x²+5x - 150 = 0
Step-by-step explanation:
Let the length be y and width be x
If the length of a swimming pool is 10 more than 2 times the width, then;
y = 2x+10 ...1
Since the Area is 300m²
A = xy
300 = xy .... 2
Substitute 1 into 2
300 = x(2x+10)
300 = 2x²+10x
Rearrange
2x²+10x - 300 = 0
Divide through by 2
x²+5x - 150 = 0
This gives the required quadratic expression
Answer:
25
Step-by-step explanation:
3877 divided by 36 is 107.69. That means each person could get 107 masks (always round down in these problems)
36 time 107 is 3852, and 3877 minus 3852 is 25. This is how many will be left over.
Answer:
7/10
Step-by-step explanation:
hope this helps
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Answer:
m = 21 inches
The model length is 21 inches
Question;
Use the scale factor 1:12 to find the missing dimension. Great white shark actually lengthy 21ft. Find the model length in inches.
Step-by-step explanation:
Given;
Scale factor = 1:12
Actual length a = 21 ft
Let m represent the model length;
The ratio of model length to actually length is given as;
m/a = 1/12
m = a/12
Substituting a=21 ft;
m = 21/12 ft
Converting to inches;
1 ft = 12 inches
So,
m = 21/12 ft × 12 inches/ft
m = 21 inches
The model length is 21 inches
