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Kaylis [27]
3 years ago
13

Withdrawing $10 every week from an outstanding balance of $400

Mathematics
2 answers:
SSSSS [86.1K]3 years ago
4 0
400-10x. X is how many weeks
miskamm [114]3 years ago
3 0

Answer:

400-10w.

Step-by-step explanation:

Let w represent the number of weeks.

We are supposed to write an expression for the given word phrase.

Since the with-drawl amount is $10 per week, so amount withdrawn in w weeks would be 10w.

The amount left after w weeks would be $400 minus 10w.

Therefore, our required expression would be 400-10w.

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Let f(x)=x2−3x−4 . What is the average rate of change from x = 7 to x = 10? Question 6 options: 24 14 66 42
Fed [463]
Just find the slope between the points

basically find (f(10)-f(7))/(10-7)

f(7)=7^2-3(7)-4=49-21-4=24
f(10)=10^2-3(10)-4=100-30-4=66

slope=(66-24)/(10-7)=42/3=14
average rate of change is 14
8 0
3 years ago
There are 22 rows of seats on a concert hall: 23 seats are in the 1st row, 27 seats on the 2nd row, 31 seats on the 3rd row, and
JulijaS [17]
We can model this situation with an arithmetic series.
we have to find the number of all the seats, so we need to sum up the number of seats in all of the 22 rows.

1st row: 23
2nd row: 27
3rd row: 31
Notice how we are adding 4 each time.

So we have an arithmetic series with a first term of 23 and a common difference of 4.

We need to find the total number of seats. To do this, we use the formula for the sum of an arithmetic series (first n terms):

Sₙ = (n/2)(t₁ + tₙ)

where n is the term numbers, t₁ is the first term, tₙ is the nth term

We want to sum up to 22 terms, so we need to find the 22nd term

Formula for general term of an arithmetic sequence:

tₙ = t₁ + (n-1)d,

where t1 is the first term, n is the term number, d is the common difference. Since first term is 23 and common difference is 4, the general term for this situation is

tₙ = 23 + (n-1)(4)

The 22nd term, which is the 22nd row, is

t₂₂ = 23 + (22-1)(4) = 107

There are 107 seats in the 22nd row.

So we use the sum formula to find the total number of seats:

S₂₂ = (22/2)(23 + 107) = 1430 seats

Total of 1430 seats.
If all the seats are taken, then the total sale profit is

1430 * $29.99 = $42885.70
4 0
3 years ago
Perform the indicated operation (-25) - (25)
slavikrds [6]

Hello,

(-25) - (25) = (-25) + (-25) = (-50)

Bye :)

4 0
3 years ago
Allison took 112 photos on vacation. She wants to put them in s photo album that holds 4 photos on each page. How many pages can
Blizzard [7]
28 pages

112 divided by 4 = 28
3 0
3 years ago
Read 2 more answers
Which angle is the included angle for JL and KL ?<br> A) L<br> B) K<br> C) L
umka2103 [35]
<span>angle for JL and KL is <L
answer is C. L</span>
6 0
3 years ago
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