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pav-90 [236]
3 years ago
7

Determine the length of JK

Mathematics
1 answer:
wlad13 [49]3 years ago
3 0
The length of JK rounded to the nearest hundredth is 4.72
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Consider the function f(x)= (x+4)(x-2) what is the equation of the axis of symmetry
almond37 [142]

if we zero out f(x), namely make y = 0, we can get the roots or x-intercepts for this quadratic equation

\bf 0 = (x+4)(x-2)\implies \begin{cases} 0=x+4\implies &-4=x\\ 0=x-2\implies &2=x \end{cases}

now, the equation is in x-terms, meaning is a vertically opening parabola, so the axis of symmetry will be x = something, a vertical line.

well, we have two x-intercepts, one at -4 and another at 2, and the vertex is right half-way between those guys

-4------------(-1)------------2

so the vertex is at x=-1, namely the axis of symmetry is x = -1.

8 0
3 years ago
The sign shows the prices of various school
mars1129 [50]

Answer: (D) 1.99x + 1.89y = 9.57

Step-by-step explanation: The reason is because equation option D states that for every notepad and pencil, x and y he bought, the total of his bill would equal $9.57.

6 0
3 years ago
(04.02 MC)<br> Solve the system of equations.<br> 5x + y = 9<br> 3x + 2y = 4
goblinko [34]

Answer:

(2,-1)

Step-by-step explanation:

Multiply first equation by 2:

10x + 2y = 18

Subtract the second equation from this so that the 2y terms cancel:

10x - 3x = 18 - 4

7x = 14

x = 2

Plug into first equation to find y:

5(2) + y = 9

10 + y = 9

y = -1

The answer is (2,-1)

7 0
3 years ago
Read 2 more answers
Pahelp badly needed!!!!​
Novosadov [1.4K]

Answer:

Step-by-step explanation:

1. 2x - 28

2. 6x3 - 4x2 + 2x

3. x2 + 7x + 12

4. m2 - 4mn + 21n2

5. x2 - 9x + 18

5 0
3 years ago
Ms. Claudio and Ms. yee took their students to the winter festival. There were a total of 68 students in attendance. In group A
svetlana [45]

Answer: 407.25

Step-by-step explanation:

23 x 6.75 =155.25     25 x 4.50 = 112.50       20 x 6.75+4.50=139.50    112.50+155.25+139.50= 407.25  HOPE IT HELPS!!! : )

7 0
3 years ago
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