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Mashutka [201]
3 years ago
10

Do you have 135$ in a savings account and save $12 per week your friend has $95 in a savings account and save $20 per week how m

any weeks will it take for you and your friend have the same balance?
Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
4 0

Answer:

5 weeks.

Step-by-step explanation:

If w is the number of weeks, apply algebra.

So think about what would be the total money saved, or the same thing as  the Money in saving account + Money saved per week × Number of weeks

For you, this would be 135 + 12w

For your friend, 95 + 20w

So then, 135 + 12w = 95 + 20w

1) 135- 95 = 20w - 12w

2) 40 = 8x

3) X= 5 (8 times 5 is 40)

Therefore, it will take 5 weeks for you and your friend to have the same balance.

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dybincka [34]

Answer:

17.9 units is the answer

Step-by-step explanation:

points are (-7,-2) and (9,6)

Pythagorean theorem can be written as,

d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{9-(-7))^2 + (6-(-2))^2}\\\\d=\sqrt{(16)^2+(8)^2} \\\\d=\sqrt{256+64} \\\\d=\sqrt{320} \\\\d=17.88

Rounding off,

d = 17.9 units

7 0
3 years ago
Judy's heart beats 70 times a minute. At this rate, how many times does it beat per hour?
Studentka2010 [4]

Answer:

<h2>4200 times</h2>

Step-by-step explanation:

70\:times = 1\:minute\\x\:times\:= 60\:minute\\\\Cross\:multiply\\ x = 70 \times 60\\\\x = 4200\\\\= 4200 \:times\:in\:an\:hour\\\\Note: 60\:minutes = 1 \:hour

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3 years ago
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Which of the right rectangular boxes shown has the greater volume? A. The purple box. B. The green box. C. They have equal volum
Elden [556K]
B the green box , because umm i don’t see a picture i’m going off of my mind because i did that before i’m pretty sure .
4 0
2 years ago
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You have 6L feet of fence to make a rectangular vegetable garden alongside the wall of your house, where L is a positive constan
nika2105 [10]

Answer:

A(max) = (9/2)*L² ft²

Dimensions:

x = 3*L feet

y  = (3/2)*L   ft

Step-by-step explanation:

Let call  "x"  and  " y " sides of the rectangle. The side x is parallel to the wall of the house then

Area of the rectangle is  

A(r) = x*y

And total length of fence available is 6*L f , and we will use the wall as one x side then, perimeter of the rectangle which is 2x  +  2y   becomes x + 2*y

Then

6*L  =  x + 2* y    ⇒ y  = ( 6*L - x ) /2

And the area as function of x is

A(x)  =   x* ( 6*L - x )/2

A(x)  = ( 6*L*x  - x² ) /2

Taking derivatives on both sides of the equation we get:

A´(x)  =  1/2 ( 6*L - 2*x )

A´(x)  =  0      ⇒      1/2(  6*L  - 2*x ) = 0

6*L - 2*x  = 0

-2*x  = - 6*L

x  =  3*L feet

And

y  = ( 6*L - x ) /2   ⇒  y  = ( 6*L - 3*L )/ 2

y = ( 3/2)*L feet

And area maximum is:

A(max)  =  3*L * 3/2*L

A(max)  = (9/2)*L² f²

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3 years ago
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Answer:

cool

Step-by-step explanation:

2v + 7 = 3

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v = - 2

8 0
3 years ago
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