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3 years ago

Solve the proportion X/4= 2/5

Mathematics

2 answers:

dimaraw [331]3 years ago

6 0

Answer:

x = 8/5

Step-by-step explanation:

4 5

so get X by itself by multiplying both sides by 4

x= 8/5

Evgesh-ka [11]3 years ago

5 0

Answer:

Step-by-step explanation:

x/4=2/5

Basically : x=8/5

x=1.6

x=1 3/5

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Sammy and David were selling water bottles to raise money for new football uniforms famous or 5 water bottles for every 3 water

ANTONII [103]

In the given question, we come to know that Sammy sold 5 bottles for every 3 water bottles sold by David. In this case we get the ratio as 5:3
Now this ratio indicates that the total number of bottles can be divided into 8 parts for finding out a single part. the total number of water bottles that are sold by Sammy and David together are 160.
Now on dividing this total number of bottles by 8 we get the 20 as one part.
The,
Number of Bottles sold by Sammy = 5 * 20
= 100
Number of bottles sold by David = 3 * 20
= 60
So Sammy sold 100 water bottles and David sold 60 water bottles from the total of 160 water bottles.

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3 years ago

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2 years ago

Identify the factors in the expression 6 (×+5)

Setler [38]

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2 years ago

If $-2 < x \le 3,$ then find all possible values of $5x + 1.$ Give your answer in interval notation.

kotegsom [21]

Answer: $(-9, 16]$

This is the interval from -9 to 16. Exclude -9 but include 16.

=====================================================

Work Shown:

The idea is to multiply all sides by 5, then add 1 to all sides

$-2 < x \le 3$

$5(-2) < 5x \le 5(3)$

$-10 < 5x \le 15$

$-10+1 < 5x+1 \le 15+1$

$-9 < 5x+1 \le 16$

This converts to the interval notation $(-9, 16]$

note: a curved parenthesis means "do not include this value in the solution set"; while a square bracket has us include the value. So we exclude -9 and include 16.

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2 years ago

An arithmetic sequence has a1 = 22 and a8 = 43. Find a15.

brilliants [131]

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