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Akimi4 [234]
4 years ago
9

Rachel has $100 in her savings account and deposits an additional $25 per week. Joanna has $350 in her account and is saving $5

per week. After how many weeks will the two girls have the same amount of money?
10
11
12
13
Mathematics
2 answers:
FrozenT [24]4 years ago
5 0
I believe 12 is the answer for the weeks
Charra [1.4K]4 years ago
3 0

100+25x = 350 +5x

subtract 5x from each side

100+20x =350

subtract 100 from each side

20x=250

 divide both sides by 20

x = 250 /20 = 12.5

so after 12 weeks they would have the same


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last month, dory biked 11 times as many miles as karly. together they biked a total of 156 miles. how many miles did dory bike l
Anni [7]
\
Hi there

Let x be the number of miles Karly biked
Dory biked 11 times as many miles as Karly, therefor, Dory = 11x
The total number of miles back by both is 156
The equation will be:
11x + x = 156
Before we can get the number of miles Dory biked, we must first get the number of miles
Karly biked represented by x.
Get the x
12x = 156
12x/12 = 156/12
<span>x = 13 </span>
Karly = x = 13 miles biked
Dory = 11x = 11(13) = 143 miles biked
to check:
11x + x = 156
11(13) + 13 = 156
143 + 13 = 156
<span>156 = 156
  i hope it helps have a nice day:)

</span>
4 0
4 years ago
Read 2 more answers
Please someone help me solve this question
miv72 [106K]

Answer:

  D.  right 4, down 8

Step-by-step explanation:

The usual transformations applied to functions are ...

  f(x) ⇒ f(x -h) . . . . translation right h units

  f(x) ⇒ f(x) +k . . . . translation up k units

  f(x) ⇒ k·f(x) . . . . . vertical scaling by a factor of k; reflection over x-axis when k < 0

  f(x) ⇒ f(x/k) . . . . . horizontal scaling by a factor of k; reflection over y-axis when k < 0

In the above, "scaling" will be expansion when |k| > 1, compression when |k| < 1.

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Your transformation is ...

  x^2 ⇒ (x -4)^2 -8

  f(x) ⇒ f(x -4) -8

This is translation with h=4 and k=-8. That is, it is translation right 4 units and down 8 units.

_____

<em>Additional comment</em>

Like much of math, it is all about matching patterns.

4 0
2 years ago
Which of these expressions shows a correct way to set up the slope formula for the line that passes through the points (3, 7) an
Karo-lina-s [1.5K]

Answer:

C

Step-by-step explanation:

option c is correct

6 0
3 years ago
What does -4(3x-7) =
Sergeu [11.5K]

Answer:

-12x+28

Tell me if u need an explanation!

Hope this Helps!!!

4 0
3 years ago
Mei Mei finds some dimes and quarters in her change purse. How much money (in dollars) does she have if she has 7 dimes and 12 q
zavuch27 [327]

Answer:

$3.70

Step-by-step explanation:

4 quaters= 1$

4=1

8=2

12=3

7 dimes =70

so there for

$3.70

5 0
3 years ago
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