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3 years ago

What are the first three terms of the Arithmetic Sequence a, = 15 - 2(n - 1)?

Mathematics

1 answer:

IgorC [24]3 years ago

4 0

Answer:

Step-by-step explanation:

Plug 1, 2, and 3 into n and you'll get 15, 13, and 11 respectively

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The density of an object is the quotient of its mass and its volume

Anika [276]

That's a safe position to take, and a statement unexcelled for accuracy or veracity. Do you have a question to ask ?

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3 years ago

Which fraction is equivalent to 2/6 a.3/7 b.3/9 c.3/12 d.3/8

Setler79 [48]

B 3/9 cause three will go into nine three times and two will go into six three times

5 0

3 years ago

Read 2 more answers

The floor of a room is being covered with tile. An area one half

tangare [24]

Answer:

Only the floor area $\frac{3}{8}$ has been covered

Step-by-step explanation:

Assuming that the floor of the room is rectangular, then its area is equal to the product of its length times its width.

$A = lw$

Let's now call A 'the area that was covered with tiles.

We know that half the length was covered, then:

$l' = \frac{1}{2}l$

$w' = \frac{3}{4}w$

So:

$A' = \frac{1}{2}l(\frac{3}{4}w)$

$A' = \frac{3}{8}lw$

Finally:

$A' = \frac{3}{8}A$

4 0

3 years ago

In FGH, the measure of H=90°, HF=91 feet, and GH = 50 feet. Find the measure of F to the nearest degree.

Rudik [331]

Given:

The angle of H=90°, HF=91 feet, and GH = 50 feet.

The objective is to find the measure of angle F.

In the given right angled triangle, the side opposite to the requierd angle is called opposite side, and the other smaller side is called adjacent side.

The trigonometry formula which relates with the opposite and adjacent side is,

$\tan \theta=\frac{opposite}{adjacent}$

Now substitute the value of opposite and adjacent in the above formula to find the value of angle F.

$\begin{gathered} \tan \theta=\frac{50}{91} \\ \theta=\tan ^{-1}(0.549) \\ \theta=28.787^0 \\ \theta\approx29^0 \end{gathered}$

Hence, the value of angle F is 29 degree.

3 0

1 year ago

Pre-cal help!! (See Attachment)

MAVERICK [17]

$2cos(x) + 1 = 0$

$cos(x) = -\frac{1}{2}$

The basic angle for 1/2 is 60°, and cosines are negative in the first and third quadrant.

So, you take 180° - 60° = 120° to get the angle in the first quadrant, and 180° + 60° = 240° to get the angle in the third quadrant.

Since only 120° is an option, the answer is B.

7 0

3 years ago