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3 years ago

PLEASE HELP PLEASE!!

Mathematics

1 answer:

Serjik [45]3 years ago

5 0

The answer would be "A" You can just divide the numerator by the denominator to find the answer.

Hope this Helps! (P.S. Please Mark as Brainliest ;))

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Determine 2nd term and rth term of a.p.whose 6 th term is 12 and 8 th term is 22

Vanyuwa [196]

Answer:

see explanation

Step-by-step explanation:

The n th term of an arithmetic progression is

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given $a_{6}$ = 12 and $a_{8}$ = 22, then

a₁ + 5d = 12 → (1)

a₁ + 7d = 22 → (2)

Subtract (1) from (2) term by term to eliminate a₁

2d = 10 ( divide both sides by 2 )

d = 5

Substitute d = 5 into (1) to find a₁

a₁ + 5(5) = 12

a₁ + 25 = 12 ( subtract 25 from both sides )

a₁ = - 13

Thus

$a_{2}$ = - 13 + 5 = - 8

$a_{n}$ = - 13 + 5(n - 1) = - 13 + 5n - 5 = 5n - 18 ← n th term

8 0

3 years ago

What is the exact area and arc length of these sectors? Please helppp

Karolina [17]

Answers with step-by-step explanation:

1. Area of sector 1 = $\frac{90}{360} \times \pi \times 12^2 = 36\pi$

2. Area of sector 2 = $\frac{45}{360} \times \pi \times 19^2 = \frac{2527}{8} \pi$

3. Area of sector 3 = $\frac{270}{360} \times \pi \times 15^2 = \frac{675}{4} \pi$

4. Area of sector 4 = $\frac{270}{360} \times \pi \times 6^2 = 27 \pi$

5. Arc length of sector 1 = $\frac{90}{360} \times 2 \times \pi \times 12 = 6\pi$

6. Arc length of sector 2 = $\frac{315}{360} \times 2 \times \pi \times 19 = \frac{133}{4} \pi$

7. Arc length of sector 3 = $\frac{270}{360} \times 2 \times \pi \times 15 = \frac{45}{2}\pi$

8. Arc length of sector 4 = $\frac{270}{360} \times 2 \times \pi \times 6 = 9\pi$

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3 years ago

The sum of two numbers is 60. One number is 4 times as large as the other. What are the numbers? Larger number: Smaller number:

Makovka662 [10]

Answer:larger=48, smaller=12

Source:trust me bro

5 0

2 years ago

PLEASE HELP AGAIN!!!!!!!!!!!!!!!!!!!!! THANK YOU!!!! Solve for x. x - 7.9 = 1.19

seraphim [82]

Answer:

x = 9.09

Step-by-step explanation:

x - 7.9 = 1.19

Add 7.9 to both sides

x = 9.09

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2 years ago

What is the equation for the inverse of y = -2x + 5? * 1 point

Viefleur [7K]

Answer:

x = -2y + 5

-2y + 5 = x

-2y = x - 5

f^-1(x)= -x/2 + 5/2

8 0

3 years ago