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antoniya [11.8K]
3 years ago
12

Alex has x dollars per week available for lunch.She spends $3 on lunch every weekday. Write an algebraic expression to represent

how much money she has left over at the end of the week.
Mathematics
1 answer:
MAXImum [283]3 years ago
5 0

Answer:

The money Alex has left over at the end of the week is  ( x - $15).

Step-by-step explanation:

The total lunch allowance of a week = $x

The money spent on lunch every weekday = $3

Number of weekdays in a week = 5 days

Now, the total money spend in 5 weekdays  

=  5 x ( Money spend in 1 weekday)  = 5 ( $3) = $15

So, in  a week she spends $15 in a week.

Total amount Left  = Total Money - Money Spent  =  x - $15

Hence, the money Alex has left over at the end of the week is  ( x - $15).

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Answer:

6

Step-by-step explanation:

Draw line segments ST and RQ. Triangle RUQ and SUT are similar, because they are in a circle. Now, you use similar triangles to get that QU/UT=RU/SU so 2 = 12/SU so SU = 6, or y = 6.


Note: This is generealized by the Power of a Point, which states that if you have two chords that intersect, then you can do the same thing and it will show that QU*SU=RU*TU. (You can change the variables but the similar triangles stay the same).

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Using the standard 28/36 guidelines, what is the maximum mortgage payment allowed for someone with an annual salary of $82,175?
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Answer: 28/36 Rule calculator tells you whether your debt is too high for your income.

Step-by-step explanation:

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2 years ago
Solve for x: 2(x + 3)2 − 4 = 0
asambeis [7]

Answer:

Option D) x = −4.41, −1.59

Step-by-step explanation:

We are given the following expression in the question:

2(x + 3)^2 - 4 = 0

Solving the above expression, we get:

2(x + 3)^2 - 4 = 0\\2(x^2+9+6x)-4=0\\\text{Identity: }(a+b)^2 = a^2 + b^2 + 2ab\\2x^2+18+12x-4=0\\2x^2+12x+14=0\\\text{Using the quadratic formula:}\\ax^2 + bx +_ c = 0\\\\x = \displaystyle\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\text{Puting a = 2, b = 12, c = 14}\\\\x = \displaystyle\frac{-12\pm \sqrt{(12)^2-4(2)(14)}}{2(2)}\\\\x = \frac{-12 \pm 5.65}{4}\\\\x = \frac{-12 + 5.65}{4}, \frac{-12-5.65}{4} = -1.5875, -4.4125 \approx -1.59, -4.14

6 0
3 years ago
Read 2 more answers
I need help, has to be turned in tomorrow morning!
Kipish [7]

Answer: (5,5)

Step by step explanation:

We have the two equations

-7x + y = -30 and y = 2x - 5

one of the equations "define" y therefore we can plug the value of y into the other equation and solve for x

-7x + y = -30

plug in y = 2x - 5

-7x + 2x - 5 = -30

combine like terms

-5x - 5 = -30

add 5 to both sides

-5x = -25

divide both sides by -5

-5x/-5 = x and -25/-5 = 5

we're left with x = 5

we now plug in the value of x into one of the equations and solve for y

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x = 5

2(5) - 5 = y

multiply 2 and 5

10 - 5 = y

subtract

y = 5

the solution is (5,5)

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M + n + 1 x 2 x 3 = n + 123, What is m?
Vikki [24]

Answer:

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Step-by-step explanation:

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4 years ago
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