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aivan3 [116]
3 years ago
12

How would I find x ?

Mathematics
2 answers:
yuradex [85]3 years ago
8 0

Answer:

x=2

Step-by-step explanation:

Step-by-step explanation:

a straight line equals to 180

27x+42+23x+38=180

(combine like terms)

50x+80=180

(subtract 80 from 180)

50x=100

(divide 50 by 100)

x=2

rosijanka [135]3 years ago
4 0

Answer:

x = 2

Step-by-step explanation:

Since these two angles are complimentary, that means that they add up to 180 degrees.

<u>Step 1:  Make an equation </u>

<em>(27x + 42) + (23x + 38) = 180 </em>

<u>Step 2:  Combine like terms </u>

<u>27x</u> + 42 + <u>23x</u> + 38 = 180

<em>50x + 80 = 180 </em>

Step 3:  Subtract 80 from both sides

50x + 80 - 80 = 180 - 80

50x = 100

Step 4:  Divide 50 from both sides

50x / 50 = 100 / 50

<em>x = 2 </em>

Answer:  x = 2

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in a square garden plot (with an area of 400 sq ft)deer fencing priced at $1.50 per foot is to be installed around the plot. if
mina [271]

We have a square garden of 400 square foot.

The area of a square is:

A=x^2

where x: side length.

In this case:

\begin{gathered} A=400=x^2 \\ x=\sqrt[]{400}=20\text{ ft} \end{gathered}

The perimeter of the square is the sum of the lengths of the sides of the square. As they are all equal, we can write:

P=4x=4\cdot20=80\text{ ft}

The fencing is priced at $1.50 per foot. If we add the 7% sales tax to this price we get:

C=1.50\cdot(1+0.07)=1.50\cdot1.07=1.605\text{ \$/ft}

The fencing will be installed in all the perimeter (80 ft).

We can calculate the total cost by multiplying the sales price ($1.605 per foot) and the perimeter (80 ft):

F=C\cdot P=1.605\frac{\text{\$}}{\text{ft}}\cdot80\text{ ft}=\$128.40

Answer: the fencing will cost a total of $128.40

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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