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Pavel [41]
3 years ago
6

Are 12/7 and 36/21 proportional

Mathematics
2 answers:
anastassius [24]3 years ago
5 0

Answer:

Step-by-step explanation:

Cross multiply:

12 * 21 = 7 * 36

Simplifying

12 * 21 = 7 * 36

Multiply 12 * 21

252 = 7 * 36

Multiply 7 * 36

252 = 252

Add '-252' to each side of the equation.

252 + -252 = 252 + -252

Combine like terms: 252 + -252 = 0

0 = 252 + -252

Combine like terms: 252 + -252 = 0

0 = 0

Solving

0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

(hope this helps can i plz have brainlist :D hehe)

sertanlavr [38]3 years ago
5 0

Simplify 36/21 by dividing each number by 3:

36/21 /3 = 12/7

This is the same as the first fraction so yes they are proportional.

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Bob is driving along a straight and level road toward a mountain. At some point on his trip, he measures the angle of elevation
avanturin [10]

Answer:

5353 ft

Step-by-step explanation:

We have height of the mountain = x

We also have

tan (21°44')= x/13428.7 → x=5352.98ft

Height of the mountain to the nearest foot = 5353 ft

Hope this helps ʕ•ᴥ•ʔ

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3 years ago
Solve 3/4 times 2 ???
Anastaziya [24]
3/4 times 2 is 6/4 which is 4 1/2

so the answer is 4 1/2
7 0
3 years ago
Will mark brainliest!!!! Please answer correctly, the questions are in the picture.
zhenek [66]

Answer:

1. A

2. B

Step-by-step explanation:

1. Only option A creates that graph, the other options are either backwards or are on top of each other.

2. Because the two lines are parallel, and do not intersect at all, there will be 0 solutions.

4 0
3 years ago
Write the expression in standard form. three divided by quantity three minus twelve i.
slega [8]

3/(3 - 12i)

To simplify this, multiply both sides by (3 + 12i)

(3 - 12i)(3 + 12i)

<em><u>Distributive property.</u></em>

3(3 + 12i) - 12i(3 + 12i)

9 + 36i - 36i - 144i^2

<em><u>Simplify.</u></em>

9 - 144i^2

i^2 can be interpreted as -1.

9 + 144

<em><u>Combine like terms.</u></em>

153 is the simplified version of the bottom half of the expression.

Now for the top half.

3(3 + 12i)

<em><u>Distributive property.</u></em>

9 + 36i

We can simplify this further by factoring.

3(3 + 12i)/153

1 + 4i/17

1/17 + 4i/17 is the simplified version of the expression. (This is your answer.)

Let me know if you have any other questions.

4 0
3 years ago
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