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2 years ago

Find a1 when d= - 1 and a7= -2

Mathematics

1 answer:

Pie2 years ago

5 0

Answer:

a₁ = 4

Step-by-step explanation:

Given

d = - 1
a₇ = - 2

Find a₁

Use the nth term equation of AP

aₙ = a₁ + (n - 1)d

Apply to the given case and solve for a₁

- 2 = a₁ + 6(- 1)
- 2 = a₁ - 6
a₁ = 6 - 2
a₁ = 4

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Colt1911 [192]

Answer:

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6 0

3 years ago

(x+1) - 4 How do i determine the roots

irga5000 [103]

<h2>Solution:</h2>

To find the zero,

x + 1 - 4 = 0

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3 years ago

If m∠5 = 115 degrees, find m∠1 =

lana66690 [7]

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Question 1. If m∠5 = 115 degrees, find m∠1 = 115°

because they form corresponding Angle pair

Question 2. If m∠7 = 30 degrees, find m∠2 = 30°

because they form Alternate Exterior angle pair

Question 3. If m∠6 = 50 degrees, find m∠4 = 50°

because they form Alternate Interior Angle pair

Question 4. If m∠4 = 72 degrees, find m∠1 = 108°

because they form linear pair, their sum = 180°

Angle 4 + Angle 1 =180°

Angle 1 = 180° - Angle 4

Angle 1 = 180° - 72°

Angle 1 = 108°

4 0

3 years ago

Does 24, 7, and 26 form a right triangle

const2013 [10]

Answer:

No. It is an obtuse triangle.

Step-by-step explanation:

If c^2>a^2+b^2, then the triangle is obtuse. Since 24^2 + 7^2 is 625, and the square root of 625 is 25, that means 26>25. This proves that the triangle is obtuse.

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3 years ago

What is 1/6 of 54= 1/3 of WHAT

hodyreva [135]

Answer:

Step-by-step explanation:

⅙ × 54 = ⅓ × x

9 = x/3

x = 27

7 0

3 years ago

Read 2 more answers