All categories

3 years ago

PLZZZ HELP WILL NARK BRAINLYLIST!!!!

Mathematics

1 answer:

IceJOKER [234]3 years ago

3 0

The length is 2

Explanation: there are 2 boxes of the graph between d and c

Hope this helps

You might be interested in

Solve the system of equations for x, y, and z. Please explain/step-by-step so I can understand. Thanks!

kirza4 [7]

Answer:

Step-by-step explanation:If we add the first and second equations, we will eliminate both the x and the y.

(2x + y + z) + (2x - y - z) = (3) + (9)

2x + y + z + 2x - y - z = 3 + 9

4x = 12

x = 3

So, x must equal 3.

Now, if we put 3 into each equation, we have the following equations:

6 + y + z = 3

6 - y - z = 9

3 + y - z = 0

Now, we can move all the numbers to the right side:

y + z = -3

-y - z = 3

y - z = -3

Now, we can try to eliminate another variable. If we add the second two equations, we can eliminate y.

(-y - z) + (y - z) = (3) + (-3)

-y -z + y - z = 0

-2z = 0

z = 0 (because, if we divide both sides by -2 to isolate z, 0/[-2] = 0)

So, now we have x = 3 & z = 0.

Now, pick any of the original equations and plug these values of x & z in, and you will get y.

2x + y + z = 3

2(3) + y + 0 = 3

6 + y + 0 = 3

6 + y = 3

y = -3

So, now we have x = 3, y = -3, & z = 0.

These are the only x, y, and z values that work for all 3 equations

4 0

3 years ago

Find the area of the triangle formed by the origin and the points of intersection of the parabolas with equations y=−3x2+20 and

sergejj [24]

Answer:

Area = 21 unit²

Step-by-step explanation:

We have one point of triangle = (0,0)

The other points can be solved, intersection means

−3x²+20 = x²−16

4x² = 36

x² = 9

x = ±3

when x = 3, y = 3²−16 = 9 -16 = -7 , point is (3,-7)

when x = -3, y = (-3)²−16 = 9 -16 = -7 , point is (-3,-7)

We need to find area of triangle with points (0,0), (3,-7) and (-3,-7).

Area of triangle is given by

$Area =\frac{1}{2}\begin{vmatrix}0 & 0 & 1\\ 3 & -7 & 1\\ -3 & -7 & 1\end{vmatrix}$

$Area = \frac{1}{2}\left ( 0(-7\times 1-(1\times -7))-0(3\times 1-(1\times -3))+1(3\times -7-(-3\times -7)\right )\\\\Area =\frac{1}{2}(-21-21)=-21=21unit^2$

Area = 21 unit²

5 0

3 years ago

Read 2 more answers

What is the value of the expression 7−3? 343 −21 −1343 1343

Mrrafil [7]

Answer:

7-3 = 4

For the next one are you asking 343-21-1343(1343)?

Step-by-step explanation:

If it is then 343 - 21 - 1343(1343) = 321

PEMDAS --> cancel out to 1

343 - 21 - 1 = 322 - 1

321

8 0

3 years ago

Do you know that the product of two negative numbers is a positive and the product of three negative numbers is a negative write

Vinil7 [7]

Negative +Negative = Negative
Negative + Positive = negative

8 0

3 years ago

What is the value of the expression 9 − (fraction 1 over 2)4 ⋅ 48? 1 3 6 9

Hunter-Best [27]

Answer:

The answer is not in the list you gave.

Step-by-step explanation:

From what I understood, the problem is read 9 - (1/2)4 x 48. You would follow PEMDAS and start with the parentheses. 1/2 of 4 is 2. 2 multiplied by 48 is 96. 9 - 96 = -87. So maybe you misread the problem.

5 0

3 years ago