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Ber [7]
2 years ago
5

Tell whether the ratios form a proportion. 1 to 3 and 7 to 21

Mathematics
1 answer:
allochka39001 [22]2 years ago
7 0

Answer:

yes they form a proportion

Step-by-step explanation:

1 to 3 and 7 to 21 are equal

we can check this by multiplying each number in the 1 to 3 ratio by 7 to make it equal with the other ratio, 7 to 21.

(sorry if this is confusing but I hope it helped)

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A bottle contains 20 blue bags and 15 red bags. If two bags are picked at random one after the other with replacement, what is t
babymother [125]

Answer:

<h2> 12÷49</h2>

Step-by-step explanation:

The total number of bags in the bottle = 20 + 15 = 35

Then

the probability that the first bag is blue = 20/35

If we replace the first bag :

the probability that the second (picked) bag is blue = 15/35

Conclusion:

If two bags are picked at random one after the other with replacement

Then

the probability that the first bag is blue and then red is :

(20÷35)×(15÷35)

= (4÷7)×(3÷7)

= 12÷49

= 0.244897959184

7 0
2 years ago
|v+8| -5=2 Help please
Galina-37 [17]

Answer:

v= -1 (BRAINLIEST PLEASE)

Step-by-step explanation:

|v+8| -5=2

Add 5 to each side

|v+8| -5=2

      +5= +5

Now you have |v+8|= 7

So what plus 8 equals 7?

-1

so now you have |-1+8| which is 7

so v= -1

3 0
3 years ago
Uf bguvhbacndkzvhsdvnjsdbsdvbs help
bagirrra123 [75]

Answer:

3 + 2 = 5

5 x 5 = 25(5^2 = 25)

25 - 7 = 18

Step-by-step explanation:

Solve in parenthesis first then do exponents then perform the subtraction.

Using PEMDAS it will be a LOT more easier.

6 0
3 years ago
Read 2 more answers
Write the equation of the line that passes through the points (−7,0) and (6,−4).
Over [174]

Answer:

y=-4/13x-28/13

Step-by-step explanation:

m=y2-y1/x2-x1

m=-4-0/6-(-7)

m=-4-0/6+7

m=-4/13

y-y1=m(x-x1)

y-0=-4/13(x-(-7))

y-0=-4/13x-28/13

y=-4/13x-28/13

5 0
2 years ago
If you could help I would really appreciate it, but if not that’s fine. Thank you.
Svetradugi [14.3K]
Since 4 is between 2 & 5 you input it into the middle equation.

x=4

so the answer is 4!
7 0
3 years ago
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