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marta [7]
2 years ago
6

If the scale factor of figure a to figure b is 7:2 find the perimeter of figure a whenever the perimeter of figure b is 35

Mathematics
2 answers:
Zanzabum2 years ago
5 0

Answer:

122.5

Step-by-step explanation:

The scale factor of two figures is the ratio of the corresponding sides or in this case the perimeters. The scale factor of figure a to figure b is 7:2 this means that for 7 units of perimeter on the a figure, there are 2 units of perimeter on the b figure.

To obtain the perimeter of the figure a we arrange the equation (the ratio is maintained so both sides of the equation are equal):

\frac{7}{2}=\frac{x}{35}

where x will be the perimeter of figure a. We solve for a like this:

x=\frac{35*7}{2}=122.5

a figure perimeter is 122.5

Svetllana [295]2 years ago
3 0

a        7           P

        -------= --------

b        2              35


Using cross products

7*35 = P*2

P = 7*35/2

P = 122.5

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Megan has $45.12 in her purse. She spends $7.89 for lunch and $21.25 for a pair of sunglasses.
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Answer:

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Step-by-step explanation:

its really easy

we need to subtract the total amount that she has spent from the total amount that she had in her purse

the total amount in Megan's purse=$45.12

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now,

the exact amount that Megan has left = $45.12-$29.14=$15.98

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7 0
3 years ago
Pick a expression that matches the written description Subtract a from the quotient of 6 and B
Luba_88 [7]

An expression that is equivalent to the statement Subtract a from the quotient of 6 and B is 6/b - a

<h3>How to write equivalent expression</h3>

Given statement

Subtract a from the quotient of 6 and B

  • The quotient of 6 and B can be written as 6/B

  • a subtracted from 6/B is written as

6/B - a

Therefore, the correct option equivalent to the statement is option A) 6/B - a

Learn more about equivalent expression:

brainly.com/question/2972832

3 0
2 years ago
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ludmilkaskok [199]

Answer:

C. or 54

Step-by-step explanation:

Assuming we are trying to find r then you would get 3*44 because distance=speed*time so distance is for the 3 hour time is 132 miles. To find the reaming distance you do 240-132= 108 so then we know distance/time=speed so 108/2=54 so the speed is 54 mph

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wlad13 [49]
The sum of two numbers 5.036.
first number: one number has 4 in the tenths place, 7 in the thousandths place.
=> x.4x7
2nd number: 1 in ones place and 2 in the hundredths place.
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Now, we have the 2 numbers with given clues:
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Note that in adding numbers, we start from the right most.
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=> 3.407 + 1.629
=> 5.036



8 0
3 years ago
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