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Eva8 [605]
3 years ago
7

An amusement park sells adult tickets and children’s tickets, with adults tickets costing $5 and children’s tickets costing $3.

If Ed bought 15 tickets and spent a total of $57, how many children’s tickets did he buy? 3 5 6 9
Mathematics
2 answers:
Katarina [22]3 years ago
7 0

Answer:

Nine

Step-by-step explanation:

3 dollars for children tickets : x

5 dollars for adult tickets: y

Equation is:

3x+5y=57

Where 57 is the total amount spent

x+y=15  

where 15 is the total number of tickets bought

3x+5y=57

5(x+y)=5(15)

___________________

3x+5y=57

5x+5y=75

minus the equations top to bottom=

-2x= -18

x= -18/(-2)

x=9

He bought a total of 9 children tickets

Black_prince [1.1K]3 years ago
6 0

Answer:

the answer is 9 or D

Step-by-step explanat ion:

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One angle of a triangle measures 136º. The other two angles are congruent.
WINSTONCH [101]

Answer:

22°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180° , then

x + x + 136° = 180°

2x + 136° = 180° ( subtract 136° from both sides )

2x = 44° ( divide both sides by 2 )

x = 22°

3 0
3 years ago
12
Lady_Fox [76]

Given:

A car traveled 150 km in 3 hour.

To find:

The unit rate.

Solution:

We have,

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Time = 3 hours.

In this case speed is the unit rate.

Speed=\dfrac{Distance}{Time}

Substituting the given values, we get

Speed=\dfrac{150\text{ km}}{3\text{ hr}}

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Therefore, the unit rate is 50 km/h.

4 0
4 years ago
What does it mean by "completing the square" and how do u do it?
faust18 [17]
Completing the square goes back to pythagorean thm
but the way u do it, u want to find a value that enable u to take sqrt of both sides and solve
x^2-8x+3=0
x^2-8x=-3
we need (x-4)^2 so add 16
(x-4)^2=-3+16
(x-4)^2=13
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4 0
4 years ago
What is the answer to this priblem-13+-11=
tia_tia [17]
Basically adding a negative means subtracting and vice versa so
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4 0
3 years ago
Can you help me and describe how it’s done please 2ab+3ac+6ac+4ab+ab=
ziro4ka [17]

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You combine like terms, if the variables are the same the just add the numbers in front of them.
8 0
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