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Marina86 [1]
2 years ago
10

Sections of prefabricated fencing are each 4 1/3 feet long how long are 6 1/2 sections placed end to end

Mathematics
1 answer:
vovangra [49]2 years ago
8 0
I hope this helps you

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How much salt should Ilya add to 810g of water to make 10% solution? How much solution will he make? Ilya should add __g of salt
Burka [1]

Answer:

90 g of water should be added and he will make 900 g of solution.

Step-by-step explanation:

Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,

810+x - 100%,

x - 10%.

Mathematically,

\dfrac{810+x}{x}=\dfrac{100}{10},\\ \\10(810+x)=100x,\\ \\8100+10x=100x,\\ \\100x-10x=8100,\\ \\90x=8100,\\ \\x=\dfrac{8100}{90}=90\ g.

So 90 g of water should be added and he will make 810+90=900 g of solution.

5 0
2 years ago
Paula has 3 bananas. She wants to divide each of them into sections. How many 's are there in 3 bananas?
notka56 [123]
1 in each section :)
8 0
2 years ago
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ZA and ZB are supplementary angles. If mA = (2x − 9)º and m
Papessa [141]

angle A = 30

(2x-9) = (2x+21)
     +9          +9
 2x=2x+30

-2x  -2x

=30

6 0
1 year ago
Solve for t. 3/4t=14 <br> a. 1/3<br> b. 1<br> c. 4/3<br> d. 4
Molodets [167]
3/4t=14
t=56/3
hope this helps!
5 0
3 years ago
Read 2 more answers
Solve for x.<br><br> 12 = x + 3 X=_____
alexandr1967 [171]

For this case we must find the value of the variable "x" of the following equation:

12 = x + 3

So, we follow the steps:

Subtracting 3 from both sides of the equation we have:

12-3=x+3-3

Different signs are subtracted and the sign of the major is placed:

9 = x\\x = 9

Thus, the value of x is 9.

Answer:

x = 9

5 0
3 years ago
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