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3 years ago

Which number line correctly shows 4.5 – 2.5?

Mathematics

2 answers:

Kitty [74]3 years ago

8 0

Answer: First option is correct.

Step-by-step explanation:

Since we have given that

$4.5-2.5$

According to the number line,

First we go 4.5 units towards the positive axis of x from the origin.

And then back by 2.5 units from there towards the negative axis of x to show the subtraction.

So, it will interpretate the subtraction of 2.5 from 4.5.

Numerically, it is expressed as

4.5-2.5=2

So, It should reach at 2 in the positive axis of x.

Hence, First option is correct.

worty [1.4K]3 years ago

6 0

I say the third one because the end-points start where they are supposed to start/ end.

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3 years ago

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3 years ago

The first term of a geometric sequence is 32, and the 5th term of the sequence is 818 .

sammy [17]

Answer:

$32,24,18,\frac{27}{2} ,\frac{81}{8}$

Step-by-step explanation:

Let x, y , and z be the numbers.

Then the geometric sequence is $32,x,y,z,\frac{81}{8}$

Recall that term of a geometric sequence are generally in the form:

$a,ar,ar^2,ar^3,ar^4$

This implies that:

a=32 and $ar^4=\frac{81}{8}$

Substitute a=32 and solve for r.

$32r^3=\frac{81}{8}$

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Take the fourth root to get:

$r=\sqrt[4]{\frac{81}{256} }$

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3 years ago