2 years ago

Find the 10th term in the arithmetic sequence -2, -5, -8, -11

Mathematics

2 answers:

Kobotan [32]2 years ago

6 0

The answer keeps on going lower. So the answer is -29.

lara31 [8.8K]2 years ago

5 0

The answer is -29, hope this helps

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Please help and explain so I understand!!

olga_2 [115]

Answer:

x=5

Step-by-step explanation:

$4x^2-11=89$

add 11 to both sides

$4x^2=100$

Divide 4 on both sides

$x^2=25$

Take the square root of both sides to eliminate the power of two from x

$\sqrt{x^2} =\sqrt{25}$

Simplify

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2 years ago

Which of the following trigonometric expressions is equivalent to csc(-112°)? csc(68°)

Romashka-Z-Leto [24]

Answer:

csc(-112°)=-csc(68°)

Step-by-step explanation:

Since cosec(x) and sin(x) are reciprocals of each other,

cosec(-112°)= $\frac{1}{sin(-112^{\circ})}$

= $\frac{1}{-sin(112^{\circ})}$

= $\frac{1}{-sin(180^{\circ}-68^{\circ})}$ (since 112=180-68)

= $\frac{1}{-sin(68^{\circ})}$ (since sin(180-x)=sinx)

= $\frac{-1}{sin(68^{\circ})}$ (since $\frac{a}{-b}= \frac{-a}{b}$ )

=-cosec(68°)

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2 years ago

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2 years ago

A geometric sequence is shown below: a0, -11, 22, a1, 88, -176.

Anon25 [30]

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Step-by-step explanation:

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