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GuDViN [60]
3 years ago
6

if $4200 is invested in a savings account for which interest is compounded semiannually, and if the $4200 turns into $4900 in 4

years, what is the interest rate of the savings account?
Mathematics
2 answers:
nydimaria [60]3 years ago
6 0
4900=4200(1+r/2)^(2*4)
Solve for r
R=(4900/4200)^(1/8))-1)*2
R=((4,900÷4,200)^(1÷8)−1)×2
R=0.039*100=3.9%
wel3 years ago
5 0

Answer:

3.89

Step-by-step explanation:

did test

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seropon [69]

Answer:

$1.73

Step-by-step explanation:

$7.89-$6.16=$1.73

3 0
2 years ago
Use the substitution method to solve the system of equations. Choose the
luda_lava [24]

Answer:

(2, 22 )

Step-by-step explanation:

Given the 2 equations

y = 7x + 8 → (1)

y = x + 20 → (2)

Substitute y = 7x + 8 into (2)

7x + 8 = x + 20 ( subtract x from both sides )

6x + 8 = 20 ( subtract 8 from both sides )

6x = 12 ( divide both sides by 6 )

x = 2

Substitute x = 2 in (2) for corresponding value of y

y = x + 20 = 2 + 20 = 22

Solution is (2, 22 )

7 0
3 years ago
In January, a dealership sold 164 vehicles. In February, the same dealership sold 23.8% fewer vehicles than they sold in January
sattari [20]
23.8% of 164 is 39.032 so minus that off of 164 and you would've sold 124.968 cars and im guessing you should round so the dealership would've sold 125 cars.
7 0
2 years ago
Is that the answer please help no links no links please help
fenix001 [56]

Answer:

360

Step-by-step explanation:

V= L•W•H/3

10×12×9÷3

3 0
2 years ago
Willy rents a bike for 7 days. The charge is $15 plus the $0.08 per mile. He wants to spend exactly $35. How many miles can he r
Burka [1]

Answer:

Willy can ride the bike for 250 miles.

Step-by-step explanation:

$35 - $15 = $20

$0.08 × 12.5 = $1

$1 per 12.5 miles

$20 × 12.5 = 250

3 0
2 years ago
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