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Goshia [24]
3 years ago
10

Simple pre algebra please help!!!!​

Mathematics
1 answer:
rodikova [14]3 years ago
3 0
Area = πr^2
= 3.14(11^2)
= 3.14(121)
= 379.99 square inches
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The “Limited Plan” offers a 15% discount for power usage between 7pm – 9am if most of your usage happens during that time. If no
Dovator [93]

The <em><u>correct answer</u></em> is:

$54.75.

Explanation:

We only receive the discount if the majority of our usage occurs between 7 pm to 9 am.  However, in the month of March we used 450 KWH between these hours and 465 KWH between 9 am to 7 pm; this means we lose our discount.

The rate per KWH is $0.05432; this means we pay

450(0.05432) = 24.444 for the hours of 7 pm to 9 am.

We also pay $0.05432/kwh for the hours of 9 am to 7 pm, but we have an additional 20% premium for the usage between these hours; this means we pay

465(0.05432)(1.2) = 30.31056, for a total of

24.444+30.31056 = 54.75456 ≈ 54.75

4 0
4 years ago
Read 2 more answers
Complete the recursive formula of the arithmetic sequence -15, -11, -7, -3,...−15,−11,−7,−3,...minus, 15, comma, minus, 11, comm
o-na [289]

Answer:

c(1) = -15

c(n) = c(n - 1) + 4

Step-by-step explanation:

Given arithmetic sequence is,

-15, -11, -7, -3...........

Common difference between each successive and previous term is,

d = -11 - (-15)

  = -11 + 15

  = 4

Since recursive formula of the arithmetic sequence is represented by,

a₁ = First term of the sequence

a(n) = a(n - 1) + d

where a(n) is the nth term and a(n-1) is the previous term of the nth term.

Form the given sequence,

c₁ = -15

c(n) = c(n - 1) + 4

4 0
3 years ago
On considère les deux expressions A et B. A=4(x+5)-8 B=x au carré+15. Avec x=1,puis avec x=3, je trouve le même résultat pour A
Ainat [17]

Explication étape par étape:

Compte tenu des expressions ';

A = 4 (x + 5) -8

B = x² + 15

Nous devons vérifier si A = B pour les deux valeurs de x à x = 1 et x = 3

à quand x = 1

A = 4 (1 + 5) -8

A = 4 (6) - 8

A = 24-8

A = 16

B = x² + 15

B = 1² + 15

B = 1 + 15

B = 16

Donc à quand x = 1, A = B = 16

quand x = 3

A = 4 (x + 5) -8

A = 4 (3 + 5) -8

A = 4 (8) - 8

A = 32-8

A = 24

B = 3² + 15

B = 9 + 15

B = 24

Également lorsque x = 3, A = B = 24

Cela montre que le postulat d'Emmas est juste.

5 0
3 years ago
Harold wants to borrow $1,400 for 5 years. The interest rate is 9%. How much interest will he pay over the course of the loan?
krek1111 [17]

Answer: He will pay $630 over the course of the loan.

Step-by-step explanation:

Formula for simple interest :

S.I. = PRT, where P=principal amount , R =rate of interest ( in decimal), T=time (in years)

As per given ,

P = $1,400 ,  t = 5 years , r = 9% = 0.09

Simple interest = (1400) x (0.09) x (5)

⇒ Simple interest = $ 630

Hence, he will pay $630 over the course of the loan.

5 0
3 years ago
Is 27 / 16 a rational number​
dedylja [7]
Yes it is a rational number
6 0
2 years ago
Read 2 more answers
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