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ruslelena [56]
2 years ago
14

If 12 keychains cost $9 then how much does 20 keychains cost? $________ Also if you could may you provide steps on how you got t

he answer​

Mathematics
2 answers:
AleksandrR [38]2 years ago
5 0

Answer:

Step-by-step explanation:

12k=9

12k*5/3=9*5/3

20k=15

Jlenok [28]2 years ago
5 0

Answer:

20 keychains will be $15

Step-by-step explanation:

i did 9 divided by 12 equals 0.75 so thats how much each keychain costs. 0.75x20=15

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Evgen [1.6K]

Answer:

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Step-by-step explanation:

brainliest and chill bro

5 0
3 years ago
A triangle has one leg measuring 10 inches and the hypotenuse measuring 20 inches. the other leg measures 10\sqrt[]{3} 10 3 inch
stiv31 [10]
From the description given for the triangle above, I think the type of triangle that is represented would be a right triangle. This type of triangle contains a right angle and two acute angles. In order to say or prove that it is a right triangle, it should be able to satisfy the Pythagorean Theorem which relates the sides of the triangle. It is expressed as follows:

c^2 = a^2 + b^2

 where c is the hypotenuse or the longest side and a, b are the two shorter sides.

To prove that the triangle is indeed a right triangle, we use the equation above.

c^2 = a^2 + b^2
c^2 = 20^2 = 10^2 + (10sqrt(3))^2
400 = 100 + (100(3))
400 = 400
5 0
3 years ago
What’s the measure of A?
Mekhanik [1.2K]

Answer: x = 11

Step-by-step explanation:

Complementary angles = 90*

Set the two equations equal to 90. Solve

4x + 6 + 4x - 4 = 90

8x +2 = 90

8x = 88

x = 11

Plug it in to see if it makes equation true

4 (11) + 6 + 4 (11) - 4 = 90

44 + 6 + 44 - 4 = 90

50 + 40 = 90

90 = 90

5 0
2 years ago
HELP ME ASAP
MArishka [77]
1)

a.
60 ounces = 3 pounds

So no, you don’t have as much fruit as you need.

b.
60 ounces —> 3 pounds
X ounces —> 4 pounds

Cross product :

(60 x 4) / 3 —> 240/3 = 80

So in order to have 4 pounds of fruits, you need 80 ounces of fruits.

You already have 60 ounces of fruits.

X + 60 = 80

80 - 60 = X

20 = X

You need 20 more ounces to have 4 pounds of fruits.

:)
5 0
3 years ago
-5=x/3-8 plz someone help me plz
Flura [38]
Isolate x by adding 8 to both sides.
3 = x/3
Then, multiply by 3 on both sides.
9 = x
To prove that this is right, you can imput 9 into the equation and it equals -5.
5 0
3 years ago
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