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3 years ago

What is A and B if A+B is 7/12 and A-B is 5/12?

1 answer:

7 0

A would be 6/12 (1/2) and B would be 1/12. To make this easier to understand, think of it this way. 6+1=7, and 6-1=5. In the future, find what adds to 7 and begin plugging in numbers until you get the correct answer.

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Can you help me create a polynomial function matching the criteria on the left please and thanks

Olenka [21]

Answer:

$f(x) = \dfrac{1}{8}(x + 4)^2(x + 1)(x - 3)$

Step-by-step explanation:

From inspection of the graph, we can see that the curve intercepts the x-axis at (-4, 0), (-1, 0) and (3, 0)

Therefore,

x = -4 ⇒ x + 4 = 0

x = -1 ⇒ x + 1 = 0

x = 3 ⇒ x - 3 = 0

Because (-4, 0) touches the x-axis, then (x + 4)² will be a factor

So (x + 4)², (x + 1) and (x - 3) are all factors of the polynomial

$\implies f(x) = \dfrac{1}{n}(x + 4)^2(x + 1)(x - 3)$

If we multiply the constants, this will give us the y-intercept:

⇒ 4² x 1 x -3 = -48

From inspection of the graph, the y-intercept is -6

So to get from -48 to -6 we need to multiply -48 by 1/8

Therefore, n = 1/8

$\implies f(x) = \dfrac{1}{8}(x + 4)^2(x + 1)(x - 3)$

7 0

1 year ago

Read 2 more answers

Can someone help please

Svetach [21]

I believe it would be d. equilateral. becuz a equilateral triangle is a triangle with 3 equal sides, and 3 equal angles.

7 0

2 years ago

Lisa purchases a professional racing bicycle that sells for $3,000, including tax. It requires an 18.5% down payment. How much i

matrenka [14]

Answer: 3,0080

Step-by-step explanation:

3 0

2 years ago

Plllllllllllease heeeeelp

Musya8 [376]

Answer:

SA = 967.6 cm²

Step-by-step explanation:

Surface Area of cylinder = $2\pi r h + 2\pi r^2$

<u><em>Where r = 7 cm, h = 15 cm</em></u>

=> SA = 2(3.14)(7)(15)+2(3.14)(7)²

=> SA = 659.7 + 2(3.14)(49)

=> SA = 659.7 + 307.9

=> SA = 967.6 cm²

6 0

2 years ago

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Show that the Second Derivative Test is inconclusive when applied to the following function at (0,0). Describe the behavior of

morpeh [17]

Answer:

See explanations for step by step procedure to answer

Step-by-step explanation:

Given that;

.f (x comma y )equals 8 x squared y minus 3 Confirm that the function f meets the conditions of the Second Derivative Test by finding f Subscript x Baseline (0 comma 0 ), f Subscript y Baseline (0 comma 0 ), and the second partial derivatives of f.

See attached documents for clearity, further explanations and answer

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2 years ago