3 years ago

Solve for x in the parallelogram

Mathematics

1 answer:

vladimir1956 [14]3 years ago

8 0

Answer:

x = 25

Step-by-step explanation:

total interior angles in 360

4x - 20 + 100 = 180

4x = 100

x = 25

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A. 5 b. 7 c. 9 d. 11 PLEASE HELPPP I WILL GIVE BRILLIANT!!!

antiseptic1488 [7]

Answer:

B : 7

Step-by-step explanation:

4 0

3 years ago

Find the value(s) of k such that 4x² + kx + 4 = 0 has 1 rational solution

Blababa [14]

Answer:

If you mean only one rational solution, the answer is

$k_1 = 8, k_2 = -8$

If you mean at least 1 rational solution, the answer is

$k\in (-\infty, -8]\cup[8, \infty)$

Step-by-step explanation:

$4x^2 + kx + 4 = 0$

Let's calculate the discriminant.

$\Delta = b^2 - 4ac$

$\Delta = k^2 -4 \cdot 4 \cdot 4$

$\Delta = k^2 -64$

Now, remember that:

$\text{If } \Delta > 0 : \text{2 Real solutions}$

$\text{If } \Delta = 0 : \text{1 Real solution}$

$\text{If } \Delta < 0 : \text{No Real solution}$

Therefore, I will just consider the first two cases.

$k^2 - 64 > 0$

and

$k^2 -64 = 0$

$\boxed{\text{For } k^2 - 64 > 0}$

$k^2 > 64 \Longleftrightarrow k>\pm\sqrt{64} \Longleftrightarrow k\in (-\infty, -8)\cup(8, \infty)$

$\boxed{\text{For } k^2 - 64 = 0}$

$k^2 = 64 \Longleftrightarrow k=\pm\sqrt{64} \implies k_1 = 8, k_2 = -8$

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3 years ago

Find the solution to the equation 16.2 + n = 16

kozerog [31]

The answer is N=-0.2

4 0

3 years ago

Read 2 more answers

Solve for x: 3|x − 3| + 2 = 14

Wewaii [24]

The answer is D i tested both and negative one and positive seven both equal to 14

3 0

3 years ago

ONLY PUT THE INEQUALITY

marishachu [46]

320+30h>980
-320 -320
--------------------
30h>660
/30 /30
-------------------
h>22

he has to jump through more than 22 hoops

3 0

3 years ago