4 years ago

Fill in the missing values

Mathematics

1 answer:

Alex73 [517]4 years ago

8 0

3*6=18
The answer is 18

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The sum of the first three terms of a sequence is 6 and the fourth term is 16

Sati [7]

Answer:

a₁ = -5, d = 7, a₂ = 2, a₃ = 9, a₄ = 16

equation of sequence: $\boxed{\bold{a_n=7n-12}}$

Step-by-step explanation:

a₁ + a₂ + a₃ = 6

a₁ + a₁ + d + a₁ + 2d = 6

3a₁ + 3d = 6

a₁ + d= 2 ⇒ a₁ = 2 - d

a₄ = 16

a₁ + 3d = 16

2 - r + 3d = 16

2d = 14

d = 7

a₁ = 2-7 = -5

a₁ = -5, d = 7 ⇒ a₂ = -5+7 = 2, a₃ = 2+7 = 9, a₄ = 9+7 = 16

equation of arithmetic sequence:

$a_n=a_1+d(n-1)\\\\a_n=-5+7(n-1)\\\\\underline{a_n=7n-12}$

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3 years ago

Find the measure of Angle A 65°

REY [17]

Answer:

The supplement of 65° is the angle that when added to 65° forms a straight angle (180°).

Step-by-step explanation:

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3 years ago

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sashaice [31]

The surface area would be 166.

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3 years ago

If a car is going 60 mph how far will it go in ana hour and a half

alekssr [168]

You can figure out this problem by multiplying 60 by 1.5

60x1.5=90

The car will go 90 miles in an hour and a half.

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4 years ago

Jamal used 1/3 yard of ribbon to tie a package and 1/6 yard of ribbon to tie a bow. How many yards of ribbon did Jamal use?

sp2606 [1]

1/2 a yard of ribbon.

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3 years ago

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Fill in the missing values ​

Fill in the missing values