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Simora [160]
3 years ago
9

Find the first term of the following geometric sequence ----,42,126,378,1,134

Mathematics
1 answer:
sergey [27]3 years ago
8 0
Since it is a geometric sequence each term will be a specific multiple of the term preceding it, called the common ratio...

126/42=378/126=1134/378=3

The sequence is a(n)=a(3)^(n-1) and we know the second term is 42 so:

42=a(3)^(2-1)

42=3a

a=14

So the first term is 14.
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7 0
3 years ago
a car travels along the highway to yuma at steady speed. when it begins, it is 400 miles from yuma. After 7 hours, it is 59 mile
klemol [59]

Answer:

y= -50x + 400

Step-by-step explanation:

-50 miles from the place which means they are going further and further away so it is negative. And its 400 because y=mx+b the b is 400 because thats where they started.  Also it said it was correct on A-p-e-x.

4 0
3 years ago
First, Khianna must walk from the front gate to the Ferris wheel. This distance is 2.5 cm on Khianna's map. How far is the actua
spin [16.1K]
Okie doke. 1cm on the map equals 500 meters. The distance from the gate to the ferris wheel on the map is 2.5cm. To find the actual distance, multiply the length on the map by the distance per centimeter. 500 * 2.5 is 1,250. The actual distance is 1,250 meters.

Note: When it comes to problems like these, you must always multiply the distance on the map by the scale unit (in other words, the actual distance on how far it is per the smaller unit).
7 0
2 years ago
Which number is an integer? Negative three-fourths 0 2. 3 Pi.
elena55 [62]

The number that is an integer is 0.

An integer is a number that does not have fractions or decimals. Examples of integers are 50, - 1. A fraction is a number that is made up of numerators and denominators. An example is 3/4. A decimal is made up of tenths, hundredths and thousandths. An example is 2.3.

Negative three-fourths is not an integer because it is a fraction. 2.3 and pi  is not an integer because it is a decimal.

A similar question was answered here: brainly.com/question/15984496

5 0
2 years ago
What number is the opposite of -69?<br><br> What number is the opposite of the opposite of -69?
grandymaker [24]

Answer:

69, -69

Step-by-step explanation:

If the number is positive, the opposite of it is the same number, but negative.

If the number is negative, the opposite of the number is the same number, but positive.

So, -69 would be 69.

69 is the opposite of -69, so the opposite of 69 would go back to -69.

8 0
3 years ago
Read 2 more answers
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