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The ptoduct of two rational numbers will always equal a rational number. A true. B false
How many minutes does it take 14 people to paint 14 walls .?
jane just took out $135 from her checking account. if jane has a balance of 650$ in her account, how much did jane have in the account before she took out money? Step 3 solve the equation and write your answer in sentence form
jill is thinking of two numbers. they have a sum of 27 and a difference of 7. what are the two numbers?
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You add up how many marbles there are. in this case there is 10. 3 out of those are blue. so you start out with the probability being 3/10. you take 1 marble out, making the total 9 now. now look at the color. you started with 2 red, 3 blue, and 5 yellow. you pulled out a blue, didnt put it back, so now there are 2 blue marbles left out of 9 marbles. there probability is now 2/9. hope i helped you.
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Answer:
The value of x is 20°
Step-by-step explanation:
we know that
m∠ 9 and m∠ 11 are corresponding angles
If line c is parallel to line d
then
m∠ 9 = m∠ 11
Substitute
6x=120°
x=20°
Answer:
20
Step-by-step explanation:
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Answers
Simplify
-4x(3x^2-2x+1)
Answer:
-12x^3+8x^2-4x
Question 76:
(2x-6)(x+1)
Answer:
2x^2-6x+2x-6=2x^2-4x-6
Question 77:
8x^4+2x^3-4x^2
Answer:
GCF (Greatest Common Factor)
2x^2(4x^2+x-2)
GCF=2x^2
Question 78:
25x^8+15x^5
Answer:
5x^5(5x^3+3)
Question 79:
(x-4)(x+2)
Answer: x^2-2x-8
Question 80:
2x^2+7x+6
Factors: (2x+3)
Answer:
(2x+3)(x+2)
Other Factor:
(x+2)
Question 81:
(2x-1)^2
Answer:
4x^2-4x+1
Question 82:
4x^2-25
Answer:
(2x-5)(2x+5)
Question 83:
x^3+27
Answer:
(x+3)(x^2-3x+9)
Question 84:
x^3-125
Answer:
(x-5)(x^2+5x+25)
Question 85:
x^2=121
x=square root of 121
Answer:
x=11, -11
Question 86:
(x+3)(x+7)=0
Answer:
x=-3,-7
Question 87:
x^2-16=0
(x-4)(x+4)=0
Answer:
x=-4,4
Question 88:
x^2-3x-40=0
(x-8)(x+5)=0
Answer:
x=8,-5
Question 89:
x^2+3x+?
Answer:
x^2+3x+9/4
(x+3/2)(x+3/2)
9/4
Question 90:
x^2+5x=-1
x^2+5x+25/4=-1-25/4
(x+5/2)^2=the square root of -29/4
x+5/2=(square root of -29)/2
Answer:
x=(-5+ or - the square root of -29)/2
Question 91:
x^2+2x+c=0
1 real solution
Answer:
c=1
Question 92:
Use quadratic formula.
2x^2-4x+1=0
x=-b+ or - (the square root of b^2-4ac)/2a
x=4+ or - (the square root of 16-8)/4
x=4+ or - (the square root of 8)/4
x=+ or - 2 rad 2
Question 93:
y=2x^2
Answer:
y=1/2x^2
When the factor of x decreases, the graph widens.
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Answer:
Step-by-step explanation:
10m - 2/5 = 9 3/5
Answers
-0.4 + 10m = 9.6
-0.4 + 10m = 9.6
Solving for 'm'Move all terms containing m to the left, all other terms to the right.
-0.4 + 0.4 + 10m = 9.6 + 0.4
Combine like terms: -0.4 + 0.4 = 0.00.0 + 10m = 9.6 + 0.410m = 9.6 + 0.4
Combine like terms: 9.6 + 0.4 = 1010m = 10
Divide each side by '10'.m = 1
Answer:
m = 1
Step-by-step explanation:
10m - 2/5 = 9 3/5
10m = 9 3/5 + 2/5
10m = 9 + 5/5
10m = 9 + 1 = 10
10m = 10
m = 1
Answers
Answer:
Step-by-step explanation:
Answers
The ticket for an adult costs $10 and the ticket for a child costs $7
- Let adults tickets be a
- Let children tickets be c
Based on the information given, the equation to solve the question will be:
2a + 4c = 48
5a + 2c = 64
Multiply equation i by 5
Multiply equation ii by 2
10a + 20c = 240
10a + 4c = 128
Subtract the equations
16c = 112
c = 112/16
c = 7
The ticket for a child is $7
Since 2a + 4c = 48
2a + 4(7) = 48
2a + 28 = 48
2a = 48 - 28
2a = 20
a = 20/2
a = 10
The ticket for an adult cost $10
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Answer:
The price for one adult is $10 while the price for one child is $7
Step-by-step explanation:
Let
price for an adult = a
price for a child = b
2a + 4b = 48.............(i)
5a + 2b = 64.............(ii)
make a subject of the formula in equation (i)
2a = 48 - 4b
divide through by 2
a = 24 - 2b
Insert the value of a in equation (ii)
5(24 - 2b) + 2b = 64
120 - 10b + 2b = 64
collect like terms
- 8b = 64 - 120
-8b = -56
divide both sides by -8
b = 7
insert the value of b in equation(i)
2a + 4(7) = 48
2a + 28 = 48
2a = 48 - 28
2a = 20
divide both sides by 2
a = 10
The price for one adult is $10 while the price for one child is $7