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sashaice [31]
2 years ago
11

Please help me!!! I will give Brainliest to the best answer! NO LINKS!!

Mathematics
2 answers:
inn [45]2 years ago
6 0
0.65 should be the answer
Arte-miy333 [17]2 years ago
5 0
5 so yea I think that’s what you looking for
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The seventh term of an arithmetic progression is equal to twice the fifth term. The sum
mario62 [17]

Answer:

a₁ = - 24

Step-by-step explanation:

The n th term of an AP is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₇ = 2a₅ , then

a₁ + 6d = 2(a₁ + 4d) = 2a₁ + 8d ( subtract 2a₁ + 8d from both sides )

- a₁ - 2d = 0 → (1)

The sum to n terms of an AP is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ]

Given S_{7} = 84 , then

\frac{7}{2} (2a₁ + 6d) = 84

3.5(2a₁ + 6d) = 84 ( divide both sides by 3.5 )

2a₁ + 6d = 24 → (2)

Thus we have 2 equations

- a₁ - 2d = 0 → (1)

2a₁ + 6d = 24 → (2)

Multiplying (1) by 3 and adding to (2) will eliminate d

- 3a₁ - 6d = 0 → (3)

Add (2) and (3) term by term to eliminate d

- a₁ = 24 ( multiply both sides by - 1 )

a₁ = - 24

6 0
3 years ago
the diameter of your bicycle wheel is 34 inches.What is its radius?How far will you move in one turn if your wheel?What is the d
gulaghasi [49]

Answer:

Step-by-step explanation:

The radius of a circle is always half the radius.

Thus, in this case, the radius is (1/2)(34 in) = 17 in.

The "how far" question is answerable by finding the circumference of the wheel.  The circumference, C, is found by calculating C = πd, where d is the diameter of the circle in question.

Here, C = (34 in)π, which comes out to 106.81 inches.  The bike will move 106.81 inches forward if the wheel turns once.

If the wheel turns 5 times, the total distance traveled is 5 times the circumference, or 5(106.81 in) = 534.07 in.

6 0
3 years ago
HELP PLEASE,
faltersainse [42]
I think it's D but make it sire
7 0
3 years ago
Read 2 more answers
Complete the equation of the line through (−10,3) and (-8,-8)
yawa3891 [41]

Answer: y = (-11/2)x -52

Aka y=mx*b

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
If i wear a 1x hoodies for women, what size would i wear in hoodies for men?
vodomira [7]

Answer:

you would wear a mens medium

Step-by-step explanation:

3 0
3 years ago
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