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shtirl [24]
3 years ago
14

Solve the inequality. x(7-x) >8 a. 2b. 8c. -1d. 0 ​

Mathematics
1 answer:
julsineya [31]3 years ago
5 0
I think the answer is 2.
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A line goes through the point (6,-2) and has a slope of -3. What is the value of a if the point (a,7) lies on the line?​
Vikki [24]

Answer:

<h2>a = 3</h2>

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

m =  \frac{ y_2 - y _ 1}{x_ 2 - x_ 1}  \\

From the question the slope is - 3

To find the value of a we have

- 3 =  \frac{7 -  - 2}{a - 6}  \\  - 3 =  \frac{7 + 2}{a - 6}  \\  - 3(a - 6) = 9 \\  - 3a + 18 = 9 \\  - 3a = 9 - 18 \\  - 3a =  - 9

Divide both sides by - 3

\frac{ - 3a}{ - 3}  =  \frac{ - 9}{ - 3}  \\

We have the final answer as

<h3>a = 3</h3>

Hope this helps you

3 0
3 years ago
Read 2 more answers
Find the missing term in the perfect-square trinomial.<br><br> ____− 108y + 36
Nastasia [14]

Answer: 81y^2

Step-by-step explanation: a^2-2ab+b^2=(a-b)^2 Plug values and solve.

6 0
3 years ago
What is the ratio of the sides of triangle XYZ?<br> --&gt; can anyone solve this equation ?
lubasha [3.4K]

Answer:

1:2:√3

Step-by-step explanation:

since XYZ is a special right triangle

8 0
3 years ago
Convert the cartesian equation x2 +y2=16 to a polar equation
VARVARA [1.3K]
X^2+y^2 = 16
can be written as
(x-0)^2+(y-0)^2 = 4^2

We see that the second equation is in the form
(x-h)^2 + (y-k)^2 = r^2

where
(h,k) = (0,0) is the center
r = 4 is the radius

The polar form of the equation is simply r = 4. Why is this? Because the radius is fixed to be 4 no matter what happens with theta. As theta goes from 0 to 360, the points generated all form a circle centered at (0,0) with radius 4. 

Answer: r = 4
3 0
4 years ago
What number produces a rational number when added to 1/3
Verizon [17]

Answer:

Any rational number

Step-by-step explanation:

A <em>rational number</em> is a number obtained by dividing two integers.

Thus, 1/3 is a rational number.

You can add <em>any rational number</em> to 1/3 and the sum will be a rational number.

6 0
4 years ago
Read 2 more answers
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