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4 years ago

What is 12a =? Talking about Math :/

Mathematics

1 answer:

frosja888 [35]4 years ago

4 0

Answer: 12a=48

Step-by-step explanation:

4a+6b=10

4a=10-6b

a=(10-6b)/4

a=(5-3b)/2

2a-4b=12

2((5-3b)/2)-4b=12

(5-3b)-4b=12

5-7b=12

-7b=7

b=-1

2a-4b=12

2a-4(-1)=12

2a+4=12

2a=8

a=4

a=4, b=-1

12a=48

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3 years ago

scott is riding a bike course that is 50 miles long. So far, he has ridden 6 miles of the course. What percentage of the course

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Scott has ridden 12% of the course.

Step-by-step explanation:

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Keywords: percentage, distance

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#LearnwithBrainly

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3 years ago

D) Use your knowledge of scale drawings and image sizes to fill in the missing

astraxan [27]

Answer:

Your table is filled in below.

Step-by-step explanation:

The scale factor is the ratio of image size to original size. In part (d), the image height is "blocks" while the original height is "feet". So, the units of the scale factor are "blocks/ft".

Sometimes a scale factor has units, like this, and sometimes it is expressed as a pure number. A map scale factor might be the pure number ratio 1 : 62500, or it could also be expressed with units as 1 in : 1 mile.*

* actually, these are slightly different scales. 1:62500 is about 0.98643 inches per mile.