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Pani-rosa [81]
2 years ago
5

#9 write an inequality for the word phrase below: A number x plus 4 is at least -14

Mathematics
1 answer:
kondaur [170]2 years ago
6 0

Answer:

x+4\geq-14

Step-by-step explanation:

hope this helps, let me know if its right or not, but im 99% sure it should be :)

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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
horsena [70]

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.


3 0
3 years ago
Read 2 more answers
What are the solutions to the nonlinear system of equations below?
Sonbull [250]
Substitute y=4x to the second equation:

x^2 + (4x)^2 = 17
x^2 + 16x^2 = 17
17x^2 = 17
x^2 = 17/17
x^2 = 1
x = 1 and -1

When x=1, y=4(1) = 4
When x=-1, y=4(-1) = -4

Thus the solutions would be (1,4) and (-1,-4). That would correspond to D. and A.
5 0
3 years ago
Explain in words how to use the side lengths of a triangle to determine if the triangle is a right, acute, or obtuse triangle.
RUDIKE [14]

basically write the triangle in degree language like this is a acute angle because this is a 70* degree angle and talk more

8 0
3 years ago
(a) the person closes their eyes, grabs a coin at random, and ips the coin. what is the probability the lower face of the coin i
weqwewe [10]
Both are 1/2 because there is two sides so half the time it would be heads and half would be tails
5 0
3 years ago
Write the following proportion:<br> 8 is to 64 as 2 is to X
bagirrra123 [75]
The answer is x=16 thanks what i got to hope it helps 
3 0
3 years ago
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