Find the value of x and y such that
3x*5y+3=75y
Answer x= y=
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Find the values of x and y such that 3x=5y and 2x-3y=5 .
Answer: The value of x and y are ............., respectively.
(used ";" between the numbers)
3x=5y
=>x/5=y/3
=>2x/10=3y/9=2x-3y/10-9=5/1=5(tính chất dãy tỉ số bằng nhau)
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Find the value of such that
Find the value of y such that:
1.1 x 1.2 x 1.3 x y= y x 2.1 x 2.2 x 2.3
ta có : 1.1x 1.2 x 1.3 x y = y x 2,1 x 2,2 x 2,3
=> 1,716 x y = y x10,626
=> y= 0
Vậy y = 0
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Find the value of y such that 1,1 x 1,2 x 1,3 x y = y x 2,1 x 2,2 x 2,3
Vì y = y mà các thừa số kia lại khác nhau => y = 0 thì 2 phép tính trên mới bằng nhau
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Find the value of x such that . x - y = 13; 3/10x = 9/4y
Answer: x = ?
dễ thôi mà \(\frac{3}{10}x=\frac{9}{4}y\Rightarrow\)\(\frac{9}{30}x=\frac{9}{4}y\)
\(\Rightarrow4x=30y\)(x là 30 phần ; y là 4 phần)
Áp dụng lại dạng toán tổng-hiệu của lớp 4
Hiệu số phần bằng nhau là :
30 - 4 = 26 (phần)
Vậy x =
\(\frac{13}{26}\cdot30=\frac{1}{2}\cdot30=15\)
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Find the value of x such that x-y=13; 3/10x=9/4y
x=?
1/- Four friends eating four pizzas that Jame size . John has 2/5 left , James has 1/3 left , Jacob has 1/4 left and Billy has 3/5 left . Who eats the most amount of Pizza ?
2/- Find the value of y such that : 1.1 x 1.2 x 1.3 x y = y x 2.1 x 2.2 x 2.3. Answer: y = ?
Find the value qf x and y such that: \(2^{x+2}.5^y=10^{2x}\) . Answer x = .........., y = .............
\(2^{x+2}.5^y=10^{2x}=\left(2.5\right)^{2x}=2^{2x}.5^{2x}\)
=>
+)\(2^{x+2}=2^{2x}=>x+22=x=>2x-x=2=>x=2\)
+)\(5^y=5^{2x}=>y=2x=>y=2.2.=4\)
tick nhé
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Exam number 3Fill in the blank with the suitable numberQuestion 1:The sum of two numbers is 98 and their difference is 24. The greater number is Question 2:Fill missing number in the blank41165+2304223042+Question 3:Fill missing number in the blank (32514+16257)+23459+(16257+23459)Question 4:Calculate: 91625 – 27356 Question 5:If a square has one side’s length is 12cm then its perimeter is cmQuestion 6:If the perimeter of a square is 104m then its one side’s length is mQuestion 7:Find x such tha...
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Exam number 3
Fill in the blank with the suitable number
Question 1:
The sum of two numbers is 98 and their difference is 24. The greater number is
Question 2:
Fill missing number in the blank
41165+23042=23042+
Question 3:
Fill missing number in the blank
(32514+16257)+23459=+(16257+23459)
Question 4:
Calculate: 91625 – 27356=
Question 5:
If a square has one side’s length is 12cm then its perimeter is cm
Question 6:
If the perimeter of a square is 104m then its one side’s length is m
Question 7:
Find x such that x+24360=41256
Answer: x=
Question 8:
Find y such that y – 12358=18031
Answer: y=
Question 9:
Find the value of n such that
Answer: n=
Question 10:
Find the value of b such that
Answer: b=