Solve by using substitution or elimination by addition.
-9 x - 4y = 1
63x + 28y = -6
select the correct choice below and fill in any answer boxes present in your choice.
a. the solution is __ (type an ordered pair.)
b. there are infinitely many solutions.
c. there is no solution.

C. No solution

Step-by-step explanation:

Eliminate the y terms by multiplying by 28 and 4

28(-9x-4y=1)

4(63x+28y=-6)

This forms

-252x-112y=28

252x+112y=-24add the y terms to eliminate them

-252x+252x=28+-24

0=4x terms also eliminated

No solution

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.