How do I decompose the number 740
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There were 70runners to start a race. In the first half of the race, 1/5of them dropped out. In the second half of the race, 4/7of the remaining runners dropped out. How many runners finished the race?
Factoring Trinomials 25a^2+20ab+4b^2If you don't understand I can send you a picture of the problem. :)
Solve In 2x + In 2=0
a van had 26 people,5 got off,10 more got on,20 got off,he made a detour and 2 more got off,then 30 got on how many people are left on the van?
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46%=46/100
7/10=70/100
7/10 more than 46%=70/100+46/100=116/100=1.16
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Answer:
Step-by-step explanation: Let x represents Sara's age, since Ralph is 3 times as old, the Ralph's age will be 3x.
In 4 years time, Sara will be x+ 4 , Ralph will also be 3x + 4
It was said that Ralph will be as twice as Sara's age in 4 years
⇒ 3x + 4 = 2 ( x+4)
⇒ 3x + 4 = 2x + 8
collecting the like terms
3x - 2x = 8 - 4
x = 4
Since x represents Sara's age, then Sara is 4 years and since Ralph is presently 3 times Sara's age, then Ralph's age is 3 x 4 = 12 years
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2: Spring is usually a rainy season.
3: Spring is a season where you usually only have to wear a sweater.
I'll tell you when I come up with more! :)
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I will have "x" represent the unknown number, or you could use a "?", doesn't matter.
[8 is less than or equal to (≤) the quotient (÷) of a number and -4, so the number is being divided by -4]
If you need to solve this, you need to isolate/get the variable "x" by itself in the inequality:
Multiply -4 on both sides to get rid of the fraction and get "x" by itself
When you multiply/divide by a negative number, you flip the sign (< >)
-32 ≥ x [-32 is greater than or equal to x, or x is less than or equal to -32]