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Andrei [34K]
3 years ago
9

Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side the area of the smaller

lawn is 144 square feet in the equation x-8^2=144, xrepresents the side measures the original lawn what were the dementions of the original lawn
Mathematics
2 answers:
Gnoma [55]3 years ago
7 0

20 x 20 is what the dimensions is

horsena [70]3 years ago
3 0

Answer: 20 feet by 20 feet.


Step-by-step explanation:

1. You know that x is the original measure of one side. Since it is a square, all its sides are equal.

2. Therefore, to solve the problem you only need to solve for x, as you can see below:

- You have that:

(a-b)^{2}=a^{2}-2ab+b^{2}

- Then, you obtain the following quadratic equation:

(x-8)^{2} =144\\x^{2}-2(x)(8)+8^{2}=144\\x^{2}-16x-80=0

- Apply the Quadratic formula to solve it:

x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}\\a=1\\b=-16\\c=-80

- Then, you obtain:

x_1=20\\x_2=-4

3. The dimensions cannot be negative, therefore, the answer is: 20 feet by 20 feet.


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natali 33 [55]

Answer:

-8x^2+26x-21

Step-by-step explanation:

6 0
3 years ago
The art club had an election to select a president. 57 members voted in the election and 19 did not vote. What percentage of the
laila [671]

Answer:

75% voted

Step-by-step explanation:

you add the 75 to 19 to figure out the total amount of people in the club.

75+19=76

Then you divide the people who voted which is 57 by the total amount of people in the club which is 76

57/76=0.75

then you move the decimal two places to the left and you get 75%


5 0
2 years ago
Please help me with this question ​
gayaneshka [121]

9514 1404 393

Answer:

  D

Step-by-step explanation:

The leading term is of odd degree and negative coefficient. The odd degree tells you the end behaviors will have opposite signs. The negative coefficient tells you the left end behavior will be positive, and the right end behavior will be negative.

  \textbf{D.  }\lim\limits_{x\to -\infty}f(x)=\infty\quad\lim\limits_{x\to \infty}f(x)=-\infty

5 0
2 years ago
1. Solve: -3x + 1 = 7
aksik [14]

Answer:

1. -2 = x

2. 19 = x

3. -22 = b

4. 30 = y

5. -5 = t

Step-by-step explanation:

1. -3x = 6 [-1 to the right side of the equivalence symbol]

2. 5x = 95 [23 to the right side of the equivalence symbol]

3. ᵇ/₂ = -11 [23 to the left side of the equivalence symbol]

4. ⅓y = 10 [7 to the right side of the equivalence symbol]

5. -2t = 10 [13 to the right side of the equivalence symbol]

I am joyous to assist you anytime.

7 0
3 years ago
A parallelogram piece of paper 40cm by 25cm is cut into small parallelogram 8cm by5cm . How many pieces can be obtained. Step by
Bumek [7]
Step 1- multiply 40 by 25 to get 1000
step2- multiply 8 by 5 to get 40
step3- divide 1000 by 4 to get 250
answer. 250 pieces
5 0
2 years ago
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