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sergiy2304 [10]
4 years ago
14

Help pleasee

Mathematics
2 answers:
riadik2000 [5.3K]4 years ago
8 0
Set this up as a proportion with cement on top and sand on bottom.  Our proportions will look like this then: \frac{1}{3} = \frac{7}{x}.  Cross multiply to get x = 21.  So 21 shovels of sand is needed.
Mnenie [13.5K]4 years ago
6 0
Let x be the amount of cement and y be the amount of sand. If <span>the ratio of cement to sand for mortar is 1:3, then \frac{x}{y} = \frac{1}{3} and y=3x.
</span>
So, if <span>Sandy puts in x=7 shovels of cement, then she puts y=3\cdot 7=21 shovels of sand.
</span><span>
</span><span>Answer: 21 shovels of sand.
</span>
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I have two and one half squares and i want to divide them by one fourth. How many pieces would i have?
Nutka1998 [239]

2+½, is just 2½, now divided by 1/4.

let's first convert the mixed fraction to improper, and then divide.


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3 0
3 years ago
Upper bound and lower bound of 17
Licemer1 [7]

Answer:

Step-by-step explanation:

Hey there this si the upper and lower bound for 17

16.5<17<17.5

8 0
3 years ago
What is the supplement angle of 100?​
aleksley [76]

Answer:

An angle measuring 100 degrees would be supplementary to any angle measuring 80 degrees, but it cannot be called supplementary by itself. "Complementary" and "supplementary" are terms that describe the relationship between two angles. They are comparative words like "larger."

Step-by-step explanation:

5 0
3 years ago
Find the common ratio of the following geometric sequence 5/12, 1/4 , 3/20,9/100,27/500
mixas84 [53]
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7 0
4 years ago
My question has been deleted I made a mistake
zysi [14]
Retype your question that way we can help answer
7 0
3 years ago
Read 2 more answers
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