What is doubled of 13
Answers
13×2=26
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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
Answers
What is the measure of angle K?
11º
25º
50º
65º
Answers
Answer:
25°
Step-by-step explanation:
In isosceles triangle KNM, NL is a perpendicular bisector of angle KNM.
This means
Since
you have
No, find the measure of angles KNL and LNM:
and the measure of angle KNM is
Angles adjacent to the base of isosceles triangle are congruent. The sum of the measures of all interior angles is 180°, then
Answer:
25 Degrees
Step-by-step explanation:
Answers
4.2 * 12 = 50.4
50.4 / 7 = 7.2
6a+b = 4
5a + 2b = 1
Answers
The value of the unknown variables a and b in given equations are 1 and -2 respectively.
What is equation?
An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Given are two equations,
6a+b = 4......(i)
5a + 2b = 1.......(ii)
Solving them by using substitution method,
6a+b = 4
b = 4-6a......(iii)
Using equation (iii) in equation (ii)
5a + 2(4-6a) = 1
5a+8-12a = 1
-7a = -7
a = 1
Put a = 1 n eq(iii)
b = 4-6·1
b = 4-6
b = -2
Hence, The value of the unknown variables a and b in given equations are 1 and -2 respectively.
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Answer:
X = 1
Y = -2
Step-by-step explanation:
Use simultaneous equations to work out.
Answers
I think diagram of number D show the inverse of R[X]