Please show workings on how to do it :)
2 answers:
Answer:
here
Step-by-step explanation:
ratio:
1x, 3x, 5x=180
9x=180
x=180/9
x=20
forgot to mention 1x=cement
3x=sand and 5x=gravel.
I only know first part of the question.
Answer:
Let the ratio be x,3x,5x
then,
or,x+3x+5x=180kg
or,9x=180
or,x=180/9
or,x=20kg
now,3x=3*20
=60kg
5x=5*20
=100 kg
therefore he doesn't have enough cement and sand but he has enough gravel.
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Answer:
A.
Step-by-step explanation:
5x8 enlarged to 10x16
10 is 5x2 and 16 is 8x2
I'm assuming it's 57. Because 1/2 can equal .5 and 56.5+.5=57
I believe 25 has to be added as
(x*5)^2 = x^2 + 10x + 25
Answer:
In 4,231, the value of the digit 3 is 100 times the value of the digit 3 in 3,421.
Step-by-step explanation:
Hope this helps.
