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Nitella [24]
4 years ago
9

One day, the temperature started at 18° at 6:00 a.m., then climbed 7° by noon, and then dropped 5° by midnight. What was the tem

perature at midnight?
14 degrees

4 degrees

10 degrees

20 degrees
Mathematics
1 answer:
wolverine [178]4 years ago
6 0
The answer is 20 degrees
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Consider the geometric sequence: 1, 3, 9, 27, ...
aivan3 [116]

Answer:

<h3>The answer is option D</h3>

Step-by-step explanation:

Since the sequence is a geometric sequence

For an nth term in a geometric sequence

A(n) = a ({r})^{n - 1}

where

n is the number of terms

a is the first term

r is the common ratio

To find n we must first find the common ratio

To find the common ratio divide the previous term by the next term

That's

r = 3/1 = 3 or r = 9/3 = 3

a = 1

Substitute the values into the above formula

That's

If n is an integer then

A(n) = 1 ({3})^{n - 1}

A(n) =  {3}^{n - 1}

where n is greater than or equal to 2

Hope this helps you

4 0
3 years ago
Read 2 more answers
Ariel works construction. She knows that a 7 meter long metal bar weighs 56 kg. Ariel wants to figure out the weight (w) of a ba
Andrew [12]
The answer is 16 kg.
8 0
3 years ago
These triangles ARE similar! Which reason proves it?
andrew-mc [135]

Answer:

SAS

Step-by-step explanation:

From the image attached below, in triangle ABC, AB = 15, AC = 20 while in triangle ADE, AD = 12 and AE = 16

Two triangles are said to be similar if they have the same shape, that is either their corresponding angles are the same or their corresponding sides are proportional.

For both triangle ABC and triangle ADE, they have the same angle which is ∠A. Also:

\frac{AD}{AB}=\frac{12}{15}=\frac{4}{5}

\frac{AE}{AC}=\frac{16}{20}=\frac{4}{5}

Since two sides of triangle ABC are in the same proportion as two sides of triangle ADE and they have the same angle, therefore they are similar based on the SAS  (side-angle-side) similarity

4 0
3 years ago
PLEASE HELP WITH THIS!!! I WILL MARK YOU BRAINLIEST!!!
PolarNik [594]

Answer:

cant you only get brainliest by answering a lot of questions?

Step-by-step explanation:

4 0
3 years ago
A pizza shop wants to determine how often it delivers to three different areas of a city. The table shows the areas from a rando
aleksandrvk [35]

Answer:

55 Southern deliveries.

Step-by-step explanation:

Let's make a ratio

Northern : Central : Southern : Total

    14        :     44     :       22      :   80

     7         :     22     :       11        :   40

    35        :     110     :      55      :  200

We can see from our ratio, that there are 55 Southern deliveries when 200 deliveries are delivered.

4 0
3 years ago
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