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Paul [167]
2 years ago
15

A rectangle made of square tiles measures 7 tiles long and 3 tiles wide. what is the length of a similar rectangle whose width i

s 9 tiles
Mathematics
1 answer:
Norma-Jean [14]2 years ago
6 0
The length of the rectangle would be 21

Proportion to set it up would be 7/3 x X/9 cross multiply and solve for x which is 21
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Please read below. Thank you.
mel-nik [20]

Answer:

The equation of the circle is given by:

(x-a)^2+(y-b)^2=r^2

where:

(a,b) is the center  of the circle

given that the center of our circle is (2,3) with the radius of 5, the equation will be:

(x+2)^2+(y+3)^2=5^2

expanding the above we get:

x^2+4x+4+y^2+6y+9=25

this can be simplified to be:

x^2+4x+y^2+6y=25-13

x^2+y^2+4x+6y=12

6 0
3 years ago
Read 2 more answers
What is the perimeter of a triangle with sides 11 in 5 in and 13 in​
Harrizon [31]

Answer:

29 inches

Step-by-step explanation:

To find perimeter you just add all the side lengths.

6 0
2 years ago
Dora earns an annual salary of $85,608. How much does she earn every month. A.$6,144. B. $7,134. C.$7,144. D. $7,234
Jet001 [13]
Hi let me help you out there 
There are 12 months in a year 
$85,608 is the amount she earns in a year 
you do 
85,608 divided by 12 since there are 12 months in a year
85,608 divided by 12= $7,134
The answer is B

hope this helps 
3 0
3 years ago
Read 2 more answers
Kayla wanted to buy a coat that cost £120. She saw the coat on sale in one shop at 1/5 off. She saw the same coat on sale in ano
den301095 [7]
At one shop the coat was £24 with the 1/5 off and £30 in the other shop where it was 25% off so therefore the first coat she saw is the cheapest I think

Note: sorry if I’m wrong
8 0
3 years ago
Write a two-column proof. Given: 7y = 8x - 14; y = 6. Prove that : x = 7.
svet-max [94.6K]

Answer:

Given: 7y =8x-14 , y =6

To prove: x =7

On substituting the value of y =6 in the equation 7y = 8x -14 to solve for x.

7(6)= 8x - 14

or

42 = 8x -14                       ......[1]

Addition Property of equality states that you add the same number to both sides of an equation.

Add 14 to both sides in equation [1];

42+14 =8x -14+14

Simplify:

56 = 8x              

or

8x =56                                 ......[2]

Division Property of equality states that you divide the same number to both sides of an equation.

Divide by 8 to both sides of an equation [2];

\frac{8x}{8} =\frac{56}{8}

Simplify:

x =7                             Hence proved!

A two Column proof:

 Statement                                Reason

1. 7y = 8x -14                                   Given

    y= 6

2. 7(6) = 8x -14                                Substitution property

3.  42+14 = 8x                                  Addition property of equality

4.   56 =8x                                       Simplify

5.    x =7                                           Division Property of equality

4 0
2 years ago
Read 2 more answers
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