3 years ago

Please help me with this question

Mathematics

1 answer:

Tema [17]3 years ago

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The first term of a sequence is 13

MrRa [10]

Answer:

- 2

Step-by-step explanation:

Using the term- to - term rule of subtract 5

This means to find a term in the sequence, subtract 5 from the previous term.

Given a(1) = 13, then

a(2) = a(1) - 5 = 13 - 5 = 8

a(3) = a(2) - 5 = 8 - 5 = 3

a(4) = a(3) - 5 = 3 - 5 = - 2

The fourth term is - 2

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3 years ago

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Xelga [282]

The area is 18 square miles

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3 years ago

Six consecutive integers starting with -4?

Hunter-Best [27]

-4 0 4 8 12 16 consecutive integers follow each other in a pattern

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4 years ago

In triangle abc, ac=12, the measure of angle a = 30\deg, and the measure of angle b = 45\deg. find the area of this triangle.

Anuta_ua [19.1K]

First we have to find the missing angle. And we know that sum of the measurement of angles of a triangle is 180.

So we will get

$C = 180-30-45 = 105 degree$

Now we use sine law, which is

$\frac{sin \ A}{BC} = \frac{sin \ B }{AC}$

Substituting the values, we will get

$\frac{sin 30}{BC} = \frac{sin 45}{12}$

$BC = \frac{12 sin 30}{sin 45} = 6 \sqrt2$

The formula of area of triangle, for the given triangle is

$Area= \frac{1}{2}AC*BC sinC$

$Area = \frac{1}{2}*12*6 \sqrt 2 sin(105)= 49.2 \ square \ units$

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3 years ago

You want to place a towel bar that is 10 1⁄4 inches long in the center of a door that is 26 1⁄3 inches wide. How far should you

mestny [16]

$\frac{26 \frac{1}{3} -10 \frac{1}{4}}{2}=\\ \frac{ \frac{79}{3} - \frac{41}{4} }{2} =\\ \frac{ \frac{79}{3} * \frac{4}{4} - \frac{41}{4} * \frac{3}{3} }{2} =\\ \frac{ \frac{356}{12}- \frac{123}{12} }{2} =\\ \frac{ \frac{233}{12} }{2} =\\ \frac{233}{24} =\\ 9\frac{17}{24}$

9 17/24 inches.

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3 years ago

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