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avanturin [10]
4 years ago
6

What is -a^-2 if a = -5? (PLEASE HELP WILL MARK BRAINLIEST!!!)

Mathematics
1 answer:
4vir4ik [10]4 years ago
6 0

Answer:

-1/25

Step-by-step explanation:

-a^-2

-(-5)^-2

=-1/25

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You deposit $3000 into an account that pays 4.8% interest, compounded monthly. A) What is the value of the account after 5 years
Snezhnost [94]

Answer:

14.4 years (about 14 years 6 months)

Step-by-step explanation:

Given data

Principal= $3000

Rate= 4.8%

A. Time= 5 years

The expression for compound interest is

A=P(1+r)^t

Substitute

A= 3000(1+0.048)^5

A= 3000(1.048)^5

A=3000*1.264

A=$3792

Hence the balance will be $3792

B. Final Amount A = $6000

The expression to find time is given ast

t= ln(A/P) / r

substitute

t= ln(6000/3000)/0.048

t= ln2/0.048

t= 0.6931/0.048

t=14.43

Hence the time is 14.4 years (about 14 years 6 months)approx

8 0
3 years ago
What is the slope of 4x-3y=18
pashok25 [27]

Answer:

Look below

Step-by-step explanation:

4x-3y=18\\-3y=18-4x\\y=4/3x-6

4 0
3 years ago
Read 2 more answers
Help! PLZ, 20 PTS in 10 mins if possible thx !!!! A gym charges $55 for a monthly membership and an additional $4.50 for each yo
Rzqust [24]

Answer:

(70-55)/4.5=y rounded down to the nearest whole number

Step-by-step explanation:

The first step is to take away the $55 from $70

70-55=15

Simba has $15 to spend on the yoga classes, to find the number of yoga classes she can attend, you divide 15 by the amount a yoga class costs, $4.50

15/4.50=3 1/3

Because she can not have 1/3 of a yoga class, she can attend 3 yoga classes in her budget.

Hope this helps, if you have any questions feel free to ask

Have a good day! :)

8 0
4 years ago
Find the surface area of a square based pyramid if the edge of the base is 8 inches and the slant height is 20 inches.
Sliva [168]

Answer:

384 Square Inches

Step-by-step explanation:

Given a square pyramid with base side edge and slant height

\text{Surface Area} = A+\dfrac12 ps, where:\\A=$Area of Base\\p=Perimeter of base\\s=Slant Height

In the given pyramid:

  • Slant Height=20 inches
  • Base Edge = 8 Inches

Therefore:

Area of Base, A =8 X 8 =64 Square Inches

Perimeter of base, p =4 X 8 =32 Inches

\text{Surface Area} = 64+\dfrac12 *32*20\\=64+320\\=384$ Square Inches

7 0
4 years ago
What is the solution of the equation expressed in the bar model below?
weeeeeb [17]

The solution of the equation expressed in the bar model is x = 4

The following equation can be extracted from the bar model:

Base on the Bar model, the following equation can be extracted below:

  • x + 6 = 10

If you notice from the Table, the horizontal width that housed the number 10 is the same size with the width that house the values x and 6.

Therefore, to find x, we sum x and 6 to get 10.

x + 6 = 10

subtract 6 from both sides

x + 6 - 6 = 10 - 6

x = 4

learn more on bar model here: brainly.com/question/10656872?referrer=searchResults

4 0
2 years ago
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