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Law Incorporation [45]
2 years ago
9

6 Petra wants to buy an electronic reader that costs $160.75 including tax. She has saved $34.75 SO

Mathematics
1 answer:
nalin [4]2 years ago
7 0

Answer:

Petra would need to save for 12 weeks to get 126

126+34.75=160.75

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At the movie theatre, child admission is $6.30 and adult admission is $9.90 . On Monday, 159 tickets were sold for a total sales
frez [133]
C = child tickets
a = adult tickets

Solve this with the substitution method.
Make two equations:

6.30c + 9.90a = 1,246.50
c + a = 159

Solve for c.
Subtract 9.90a from both sides.

6.30c = 1,246.50 - 9.90a
Divide both sides by 6.30.

c = 197.86 - <span>1.57a (rounded to hundredths)
Plug c into second equation.

</span>197.86 - 1.57a + a = 159
Combine like terms.

197.86 - 0.57a = 159
Subtract 197.86 from both sides.

-0.57a = -38.86
Divide both sides by -0.57.

a = <span>68.18
round up to ones: 68

</span>\boxed {68~adult~tickets} were sold.<span>
</span>
8 0
3 years ago
If people blink about 13 times per minute, how many times do they blink in 7 hours?
SCORPION-xisa [38]

Answer:

Step-by-step explanation:

1 hour=60 min

7 hours=60×7=420 min

number of blink=420×13=5460

4 0
3 years ago
3x+5y=12 solve for x
Ivenika [448]

Answer:

x=4-5/3y

Step-by-step explanation:

3x+5y=12 make x on one side

3x=12-5y divide everything by 3

x=4-5/3y

7 0
3 years ago
Help Please!!!!!!!!!!!
Semmy [17]
You do copies divided by minutes

360/30=12

the printer produces 12 pages per minute
8 0
3 years ago
There are 26 3rd graders in 32 4th graders going on a field trip each van can carry 10 students how many students will be in eac
Katen [24]

Answer:

There will be 10 students in each van, and only 8 in one van

Step-by-step explanation:

26 + 32 = 58

4 0
2 years ago
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