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Allisa [31]
3 years ago
5

Please help

Mathematics
2 answers:
pav-90 [236]3 years ago
7 0

Answer:

Step-by-step explanation:

Just stop taking 40 dollars out of the bank every week

Mariana [72]3 years ago
5 0

Answer:

Well 500+40x=700 is the equation with B, and with x=4 thats 500+160=700, which is NOT true. So, rosalina does not have enough money to purchase her new TV in 4 weeks.

Another Answer:

For the last one, I think that its referring to the A equation, but in any case it doesnt matter. Instead of adding 40x, you would be Subtracting 40x. I also can imagine what kind of job she has, only depositing 40 bucks a week. She spends too much money on video games and cheetos.

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At a team meeting, 80% of the tennis team was there. If there were 12
Illusion [34]

Answer:

15 people

Step-by-step explanation:

let x=total # of people on the team

80%=12

80/100=12/x

cross multiply

80x=1200

division property of equality (divide both sides by 80)

x=15

There are 15 people on the team.

8 0
3 years ago
Compute: 3.5 x 2.4 x 0.01 <br><br><br><br> 0.84<br><br><br> 0.084<br><br><br> 0.0084
Georgia [21]
The answer is 0.084.
8 0
3 years ago
One month Yoko rented 3 movies and 5 video games for a total of $40. The next month she rented 9 movies and 7 video games for a
KATRIN_1 [288]

Answer:

  • movie: $3.75
  • video game: $5.75

Step-by-step explanation:

Two equations in two unknowns can be written:

  3m +5v = 40

  9m +7v = 74

These can be solved a variety of ways. One of them is using Cramer's rule. It tells you the solution to

  • ax +by = c
  • dx +ey = f

is given by ...

  • ∆ = bd -ea
  • x = (bf -ec)/∆
  • y = (cd -fa)/∆

For the numbers above,

  • ∆ = 5·9 -7·3 = 24
  • m = (5·74 -7·40)/24 = 90/24 = 3.75
  • v = (40·9 -74·3)/24 = 138/24 = 5.75

The rental cost for each movie is $3.75; for each video game, it is $5.75.

___

The attached graph shows a graphing calculator solution to these equations.

5 0
3 years ago
Sandy bought a soft drink for 4 dollars and 9 candy bars. She spent
almond37 [142]
9c + 4 = 49

The numbers by themselves represent the amount of dollars spent (4 and 49), but since you don’t know the amount of money each candy bar cost, you would put the amount of candy bars and a variable next to it to then solve ($5 per bar)
5 0
3 years ago
For what value of x is the rational expression below equal to zero 20+2x/5-x
Yuliya22 [10]
\frac{20+2x}{5-x}=0;\ \ \ \ D:x\neq5\\\\\frac{20+2x}{5-x}=0\iff20+2x=0\\\\2x=-20\ \ \ \ /:2\\\\x=-10\in D
4 0
3 years ago
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