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docker41 [41]
4 years ago
12

Sarah has $20 saved. She gets $10 per week for her allowance, and she saves her allowance for the next 3 weeks. At the end of th

e week, she gets $150 in birthday money. How much money will she have after the 3 weeks?
Mathematics
1 answer:
Nimfa-mama [501]4 years ago
5 0

Answer:

Sarah will have $200 after 3 weeks

Step-by-step explanation:

amount saved at the start = $20

amount saved per week = $10

number of weeks = 3

∴ Total savings from allowance  after 3 weeks = 10 × 3 = $30

Amount received in birthday money = $150

∴ Total amount saved after 3 weeks = amount saved at the start + Total savings from allowance  after 3 weeks + Amount received in birthday money

Total amount saved after 3 weeks = 20 + 30 + 150 = $200

Therefore Sarah will have $200 after 3 weeks

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If a number is multiplied by four, it gives the same result as 2/7 of 500 for. What is the number?
Tanzania [10]
Sounds as tho you meant:

4n = (2/7)(500)
                                              1000
If that's the case, then 4n = ------------
                                                 7
             1000         250
or n = ------------ = ---------    (answer)
                28             7

Check:  does 4(250/7) equal (2/7)(500)?  YES.
3 0
4 years ago
Find the slope and y-intercept of the line that is perpendicular to y = -x-1 and passes through the point (5,7).
Brums [2.3K]
So we have y=-x-1 this is the same as y=-1(x+1) so it has a slope of -1 this means any line perpendicular will have a slope of 1. now we use this with the point and point slope formula.
recall point slope formula is y-y1=m(x-x1) where (x1,y1) is a point and m is the slope so we find
y-7=1(x-5) we can simplify this into y intercept form by solving for y
so
y=x-5+7
y=x+2
so the line perpendicular has a slope of 1 and a y intercept of 2! :)
5 0
3 years ago
2) Macle grew from 5 feet to 5.5 feet. What was the percent change in her
givi [52]

Answer:

The answer is C.

Step-by-step explanation:

5×1.1=5.5.

8 0
3 years ago
F(x)=2x+5 find f(-6)
ser-zykov [4K]

Answer:

Step-by-step explanation:

f(x) = 2x + 5

f(-6)= 2(-6) + 5 = -12 + 5 = -7

4 0
3 years ago
Answer fast please and thank you
anastassius [24]

Answer:first question answer is 2

Second question is 0 and 1

Step-by-step explanation:

5 0
3 years ago
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