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Wittaler [7]
3 years ago
13

Jamal has a plan to save money fro a trip. Today, he deposits $10.00 into his savings account. Each week, he will add $5.00 to t

he amount that he deposits into his savings account. The table below shows the relationship between the number of weeks and how much money, in dollars, Jamal deposits into his savings account
Mathematics
1 answer:
miv72 [106K]3 years ago
3 0
I think the answer is go to cash.gg lol
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Please help me with 2 and 3 and use the elimination process!
grandymaker [24]

Answer:

2. Judy =$5

Ben= $4

Step-by-step explanation:

2. Let Judy =  x  and Ben =  y

8x + 10y = 80

9x + 5y = 65

Solve these simultaneous equations.

8 x  +  10 y  =  80

18 x  +  10 y  =  130

Take the second equation away from the first equation

− 10 x  =  − 50

x  =  5

This means that Judy gets paid $5 an hour.

Therefore, Ben gets paid $4 an hour.

Answer:

3. 24 quarters and 16 dimes

Step-by-step explanation:

3. Let the number of dimes = x and the number of quarters = y

                                    Value      Value

Type        Number       of             of

of             of                EACH      ALL

coin         coins            coin        coins

-------------------------------------------

dimes         x              $0.10       $0.10x

quarters      y             $0.25      $0.25y

-------------------------------------------

TOTALS    40                            $7.60

x + y = 40

0.10x + 0.25y = 7.60

Get rid of decimals by multiplying every term by 100:

10x + 25y = 760

So we have the system of equations:

x + y = 40

10x + 25y = 760

         

We solve by substitution.  Solve the first equation for y:

x + y = 40

y = 40 - x

Substitute (40 - x) for y in 10x + 25y = 760

      10x + 25(40 - x) = 760

      10x + 1000 - 25x = 760

           -15x + 1000 = 760

                  -15x = -240

                       x = 16 = the number of dimes.

Substitute in y = 40 - x

                     y = 40 - (16)

                     y = 24 quarters.

$1.60 + $6.00 = $7.60

I hope that helped, sorry for taking so long :-)

8 0
2 years ago
I need help with this question. Please thanks
NNADVOKAT [17]

Answer:

all you need to do is to multiple

5 0
3 years ago
Read 2 more answers
The ice cream shop offers 10 flavors of ice cream. Gabe will choose one type of cone, one size, and one type of ice cream flavor
notka56 [123]

Answer:

10

Step-by-step explanation:

because of the math envolved

3 0
2 years ago
Can someone pls help i will give you brainlist pls help me out. Find x. Round your answer to the nearest tenth
stich3 [128]

Answer:

x=11.5 i think

Step-by-step explanation:

3 0
3 years ago
What is the range of the following function: f(x)=-x^2+x^-1 if the domain is {-2, -1, 1}
postnew [5]

f(x)= -x^2 + x^-1

f(-2)= - (-2)^2 + (-2)^-1 = -4 - 1/2 = -9/2

f(-1)= - (-1)^2 + (-1)^-1 = -1 -1    =   -2

f(1) = - (1)^2 + (1)^-1 = -1 +1 = 0

The range is { -9/2, -2, 0}


8 0
2 years ago
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