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algol13
3 years ago
12

3. If x +4, 2x+5, and 4x +3 represent the first three terms of an arithmetic sequence, then find the

Mathematics
1 answer:
solong [7]3 years ago
8 0

first term = initial number

second term = initial number + common difference

third term = initial number + 2(common difference)

So...

2x+5-(x+4) = common difference

4x+3-(2x+5) = also common difference

2x+5-(x+4) = x+1

4x+3-(2x+5) = 2x-2

Because x+1=2x-2 we can solve for x.

x=3

So the sequence goes... 7,11,15...

19 is the fourth term

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If you have 63 books and you donate 1/3 of you’re books how many will you have left
ryzh [129]

Answer: 42

Step-by-step explanation: you would do 63 divided by 3 then you would get 21 and do 21×2 and get 42

6 0
3 years ago
How many different ways can you write a fraction that has a numerator of 2 as a sum of fractions
Rzqust [24]
At least you can write it as the sum of half of it twice, that is:
2/x = 1/x + 1/x
whatever x number you have, for example:
2/5 = 1/5 + 1/5

But then, you can express a fraction in many different ways, for example again:
2/5 = <span>1/5 + 1/5 = 2/10 + 2/10
</span>= 1/10 + 1/10 + 1/10 + 1/10
so there are an infinite ways of expressing such a fraction.
7 0
3 years ago
PLEASE I NEED HELP ASAP
zysi [14]

Answer:

option C is the correct ans..

Step-by-step explanation:

A function f from A to B is a relation from A to B which assosciates each element of A to a unique element of B..

Option C fulfills all the case.So,C is the correct ans..

8 0
3 years ago
Which expression is equivalent to the given expression? 4p−8
balu736 [363]
<span>4p−8 = 4 (p-2)

answer is </span><span>d. 4 (p-2)</span>
6 0
3 years ago
Read 2 more answers
the scale map says that 10cm represents 2km what distance on the map in centimeters represent an actual distance of 15 kilometer
Leno4ka [110]

Answer:

75cm

Step-by-step explanation:

Well, I can't see a photo, so I'll have to assume that the description provides enough info.

10cm/2km = x/15km,

where x is the distance on the map (in centimeters) of a real-life distance of 15 kilometers.

10cm/2km = x/15km

10/2 = 5/1

This means we have to multiply 5 by 15 to find x.

x = 5 · 15

x = 75

Let's plug the new value back in...

10cm/2km = x/15km

10cm/2km = (75cm)/15km

<em>(Simplify each side to its simplest form)</em>

10cm/2km = 75cm/15km

5/1 = 5/1

It works! So x = 75cm.

Hope this helps! :)

8 0
3 years ago
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