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Margaret [11]
2 years ago
13

6. A two-story building measures 21 feet from

Mathematics
1 answer:
Andru [333]2 years ago
3 0

Answer:

12 inches

Step-by-step explanation:

To solve you have to set up a ratio. Because both buildings are being shrunk the exact same amount, you just have to account for the size difference from the miniature and real life. The ratio is 21:3 and 84:x. To find x you just have to cross multiply and solve.

The equation comes out to be 252 = 21x

Divide both sides by 21 to get x.

252/21 = 12

The size of the 84 foot building as a model is 12 inches.

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Write an expression equivalent to `m+m+m+m` that is a product of a coefficient and a variable. Please include an explanation!
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Answer:

4m

Step-by-step explanation:

it would be 4m because there are four different copies and the variable being used originally is 'm'. therefore, we can move it around and since addition is basically the longer version of multiplication, we would correct this to 4m.

good luck :)

i hope this helps

have a nice day !!

6 0
3 years ago
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What is the correct factorization of x² - 11x + 18?
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Anastasia was trying to decide which investment plan would be best over 10 years. Bank A was offering 8.5% simple interest on he
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B
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Name a point that is √2 away from (-1,5)
Paha777 [63]

All the points on the circle

(x+1)^2 + (y-5)^2 = 2

6 0
3 years ago
13. Fill in this diagram so that each of the rows, columns and
Natasha2012 [34]

Answer:

D. 24

Step-by-step explanation:

Let's name the diagram

Row 1: a1, a2, a3

Row 2: b1, b2, b3

Row 3: c1, c2, c3

From the diagram,

b2 and c2 have been given

All rows, columns and diagonal must sum up to 18

If b2=6 and c2=4

a2=18-(6+4)

=18-10

=8

a2=8

Assume a1=4

Diagonals a1+b3+c3=18

4+6+c3=18

10+c3=18

c3=18-10

=8

Assume a3=6

Diagonals a3+b2+c1=18

6+6+c1=18

12+c1=18

c1=18-12

=6

So b1=18-(6+4)

=18-10

=8

b1=8

b3=18-(6+8)

=18-14

=4

b3=4

Input all the numbers into the boxes

We have,

4 8 6

8 6 4

6 4 8

Corner numbers are a1,a3,c1,c3

=4,6,6,8

Sum of all the corner numbers=4+6+6+8

=24

D. 24

6 0
3 years ago
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