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Svetach [21]
3 years ago
12

How do I do an exponent with a letter variable in it?

Mathematics
1 answer:
WARRIOR [948]3 years ago
7 0
First you transform the expression and then evaluate the power

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The lines on a coordinate plane are perpendicular.
nataly862011 [7]

Answer:

They form right angles 90 degrees angles

Step-by-step explanation:

4 0
3 years ago
The diameter of a circle is 26 cm. Find its area to the nearest whole number.
fomenos
Area= pi x r^2
= pi x 13^2
=pi x 169
= 530.929
= to the nearest whole number 531
4 0
2 years ago
Read 2 more answers
A cube has a volume of 0.215ft³. What is te length of each side of the cube?
enyata [817]

Answer:

length ≈ 0.599 feet

Step-by-step explanation:

volume = length³

0.215ft³ = length³

cube root both sides to isolate the length

∛(0.215ft³) = length

length ≈ 0.599 feet

6 0
3 years ago
Terry has just purchased a new car, which had a list price of $16,825. She had to pay 7.19% sales tax, a $1,128 vehicle registra
Anarel [89]
Total cost of purchasing the car = $16,825 + 0.0719 x $16,825 + $1,128 + $190 = $19,352.72
Value of her previous car = 0.9 x $16,825 = $15,142.50

Amount being owed by Terry = $19,352.72 - $15,142.50 = $4,210.22

The present value of annuity is given by PV = P(1 - (1 + r/t)^-nt) / (r/t)
where P is the monthly payment, r is the rate = 10.59% = 0.1059, t is the number of periods in a year = 12, n is the number of years.

4,210.22 = P(1 - (1 + 0.1059/12)^-(5 x 12)) / (0.1059/12)
0.1059(4,210.22) = 12P(1 - (1.008825)^-60)
P = 445.862298 / 4.916774288 = 90.68

Amount of interest paid = 60(90.68) - 4,210.22 = 5440.80 - 4210.22 = $1230.58
7 0
3 years ago
Read 2 more answers
5. Marie buys 2 pounds of turkey and 1 pounds of ham. She pays a total of $20,
NARA [144]

Answer:Let t = cost per pound of turkey

Let h = cost per pound of ham

 

4t + 2h = 30

t = h - 1.5

 

substitute h-1.5 in place of t in 1st equation

 

4(h-1.5) + 2h = 30

4h - 6 + 2h = 30

6h - 6 = 30

6h = 36

h = 6

 

t = h-1.5 = 4.5

 

1 pound of turkey costs $4.50

1 pound of ham costs    $6.00

                                ----------

cost of 1 pound each  $10.50

Step-by-step explanation:

8 0
2 years ago
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