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GarryVolchara [31]
3 years ago
5

What are the exact solutions of x2 − x − 4 = 0, where x equals negative b plus or minus the square root of b squared minus 4 tim

es a times c all over 2 times a?
Mathematics
1 answer:
Leya [2.2K]3 years ago
5 0
X=(1 + sq root 17)/2, (1 - sq root 17)/2
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Juanita borrowed $600 to purchase a new computer. She was charged 7% interest for two years. She used the simple interest formul
Fittoniya [83]

Answer:

The correct formula should be I= 600(0.07)(2). Juanita made a very common error, she didn't put the percentage of interest in decimal form; or she didn't put the percent sign on it so we know to put it in decimal form. Her error will make a big difference; with using her calculations the answer would be $8,400. With the correct formula the answer is $84.

<u>Hope this help!</u> :)

4 0
2 years ago
When will n(A∩B)=0? Explain and give an example.
andrew11 [14]

Answer:

Two sets are called disjoint if they have no elements in common. For example:

The sets S = { 2, 4, 6, 8 } and T = { 1, 3, 5, 7 } are disjoint.

Another way to define disjoint sets is to say that their intersection is the empty set,

Two sets A and B are disjoint if A ∩ B = 0.

In the example above,

S ∩ T = ∅ because no number lies in both sets.

Step-by-step explanation:

8 0
3 years ago
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olga2289 [7]

Answer:

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7 0
3 years ago
5. Consider the following equations.
WITCHER [35]

Answer:

Step-by-step explanation:

In y = mx + b form, the slope can be found in the m position and the y intercept can be found in the b position.

4x - 2y = -6

-2y = -4x- 6

y = (-4/-2)x -(6/-2)

y = 2x + 3....slope here is 2, and y int is 3

3x + y = 3

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3 0
3 years ago
I need to be in a session to post the picture of the problem
Tpy6a [65]

Answer:

The value of x that makes the equation true is 3

x=3

Explanation:

From the attached image;

Let us write the mathematical equation of the model.

The long bar means x, while the small squares have a value of 1 each.

2x+5=11

solving the equation we have;

\begin{gathered} 2x+5=11 \\ 2x=11-5 \\ 2x=6 \\ \text{divide both sides by 2;} \\ \frac{2x}{2}=\frac{6}{2} \\ x=3 \end{gathered}

Therefore, the value of x that makes the equation true is 3

x=3

5 0
1 year ago
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