1.Think of a number such that if 4 times the number is increased by 25, the result is 77. Find the number. Answer:x=13
2.6 times a number increased by .7 is 10.3. FInd the number Answer:x=1.6
3.When 19 is added to one-quarter of a number the result is 40. FInd the number. Answer:x=84
4.When 13 is subtracted from three-eights of a number the result is 11. Find the number. Answer:x=64
5.Eight times a number equals 35 more than the number. Find the number. Answer:x=5
6.Six times a number equals three times the number, increased by 24. FInd the number. Answer:x=8
7.If 3 times a number is increased by 22, the result is 14 less than 7 times the number. Find the number. Answer:x=-9
8.Bruce is 10 years older than Cindy. The sum of their ages is 52. How old is each person? Answer:Bruce=31 years old, Cindy=21 years old. 31+21=52
9.Maria is four times as old as Marty. The sum of their ages is 55 years. How old are they? Answer:Maria=44 years old Marty=11 years old
10.The larger of two numbers is 4 times the smaller. If the larger number exceeds the smaller number by 15, find the numbers. I didn't get this problem.
11.Seventeen is three times the difference between four times a number and 5. Find the number. Answer:x=14
12.Twelve is 6 times the difference between a number and three. Find the number. Answer:x=75
13.Four times a number is three time the difference between 35 and the number. FInd the number. Answer:x=26.25
14. The difference between 5 and twice a number is one. Find the number. Answer:x=3
5 comments:
Dennis Zegarra
Math HW-9/26/08
1.Think of a number such that if 4 times the number is increased by 25, the result is 77. Find the number.
Answer:x=13
2.6 times a number increased by .7 is 10.3. FInd the number
Answer:x=1.6
3.When 19 is added to one-quarter of a number the result is 40. FInd the number.
Answer:x=84
4.When 13 is subtracted from three-eights of a number the result is 11. Find the number.
Answer:x=64
5.Eight times a number equals 35 more than the number. Find the number.
Answer:x=5
6.Six times a number equals three times the number, increased by 24. FInd the number.
Answer:x=8
7.If 3 times a number is increased by 22, the result is 14 less than 7 times the number. Find the number.
Answer:x=-9
8.Bruce is 10 years older than Cindy. The sum of their ages is 52. How old is each person?
Answer:Bruce=31 years old, Cindy=21 years old. 31+21=52
9.Maria is four times as old as Marty. The sum of their ages is 55 years. How old are they?
Answer:Maria=44 years old Marty=11 years old
10.The larger of two numbers is 4 times the smaller. If the larger number exceeds the smaller number by 15, find the numbers.
I didn't get this problem.
11.Seventeen is three times the difference between four times a number and 5. Find the number.
Answer:x=14
12.Twelve is 6 times the difference between a number and three. Find the number.
Answer:x=75
13.Four times a number is three time the difference between 35 and the number. FInd the number.
Answer:x=26.25
14. The difference between 5 and twice a number is one. Find the number.
Answer:x=3
From: Dennis Escobar
Homework Sept. 25, 2008:
Solving Literal Equations
1)Solve for x in terms of a, b, and c: ax-b=c
ax-b=c
ax=c+b
x=(c+b)/a
2)Solve for x in terms of a, b, and c: ax+b=c
ax+b=c
ax=c-b
x=(c-b)/a
3)Solve for r in terms of s, π, and h: s=2πrh
s=2πrh
s=(2πrh)/2πh
r=s/(2πh)
4) solve for y in terms of a, b, and x: ay-bx=2
ay-bx=2
ay=2+bx
y=(2+bx)/a
5) solve for p in terms of r, s, and t: rp+s=t
rp+s=t
rp=t-s
p=(t-s)/r
6) if dx-2=h, then x is equal to
dx-2=h
dx=h+2
x=(h+2)/d
7) solve for y in terms of x:
3y+2=x
3y+2=x
3y=x-2
y=(x-2)/3
8) which equation is equivalent to x+2y=6
1) y=-x+6 Answer: 4
2) y=-(1/2)x+6
3) y=-x+3
4) y=-(1/2)x+3
x+2y=6
2y=6-x
y=(6-x)/2
y=3+(1/2)x
9) Solve for r in terms of p, t, and i: i=prt
i=prt
r=i/(pt)
10) if 9x+2a=-3a+4x, then x equals
9x+2a=-3a+4x
9x-4x=-3a-2a
5x=-5a
x=-5a/5
x=-a
11) in terms of c, y, and a, what is the value of x in the equation:
2ax+2y=c
2ax=c-2y
x=(c-2y)/2a
12) if x=2a-b^2, then a equals
x=2a-b^2
b^2+x=2a
a=(b^2+x)/2
Riveka israilova
1.Think of a number such that if 4 times the number is increased by 25, the result is 77. Find the number.
Answer:x=13
2.6 times a number increased by .7 is 10.3. Find the number
Answer:x=1.6
3.When 19 is added to one-quarter of a number the result is 40. Find the number.
Answer:x=84
4.When 13 is subtracted from three-eights of a number the result is 11. Find the number.
Answer:x=64
5.Eight times a number equals 35 more than the number. Find the number.
Answer:x=5
6.Six times a number equals three times the number, increased by 24. Find the number.
Answer:x=8
7.If 3 times a number is increased by 22, the result is 14 less than 7 times the number. Find the number.
Answer:x=-9
8.Bruce is 10 years older than Cindy. The sum of their ages is 52. How old is each person?
Answer:Bruce=42 years old, Cindy=10 years old. 42+10=52
9.Maria is four times as old as Marty. The sum of their ages is 55 years. How old are they?
Answer:Maria=44 years old Marty=11 years old
10.The larger of two numbers is 4 times the smaller. If the larger number exceeds the smaller number by 15, find the numbers.
I didn't do it.
11.Seventeen is three times the difference between four times a number and 5. Find the number.
Answer:x=14
12.Twelve is 6 times the difference between a number and three. Find the number.
Answer:x=75
13.Four times a number is three time the difference between 35 and the number. Find the number.
Answer:x=15
14. The difference between 5 and twice a number is one. Find the number.
Answer:x=3
10. larger#=20 smaller#=5
Michelle Chue P9
1) 4x+12=77 subtract 25 to both sides 77-25=52 4x=52 divide by 4 x=13
2) 6x=.7=10.3 subtract .7 to both sides 10.3 - 7= 9.6 6x=9.6 divide by 6 x=1.6
3) 19+1/4x=40, subtract 19 to both sides, 40-19=21.4 , 1/4x=21.4 multiply both sides by 4, x= 21 x 4, x=84
4) 3/8x-13=11,add 13 to both sides 3/8x=24, multiply both sides by 8,3x=24 x 8, 3x=192,divide both sides by 3, x=64
5) 8x=35+x,subtract x to both sides, 7x=35, divide both sides by 7, x=5
6) 6x=3x=24,subtract 3x to both sides, 3x=24, divide both sides by 3, x= 8
7) 3x+22=7x-14, subtract 3 to both sides, 22= 4x-14, add 14 to both sides, 36=4x, divide both sides by 4, x=9
8) b+10=52,subtract 10 to both sides, b= 42, 42+c=52 subtract both sides by 42, c=10
42+10=52
Bruce=42 Cindy=10
9) 4x+x=55, 5x=55, divide both sides by 5, x=11
4(11)+11= 44+11=55
Maria=44 Marty=11
10) x=6 y=26
11) 4x-5=3(17), 4x-5=51, 4x=56, x=14
12) n-3=6(12), n=75
13) 35+n=4(3) n= -23
14) 2x-5=1, 2x=6 , x=3
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