How long is the boat to the nearest yard?

Mathematics

1 answer:

AysviL [449]3 years ago

3 0

13 yards because there is 3 feet per yard so I divided 40 by 3 and I got 13.3333...... So I rounded that to 13. Hope that helped! :)

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On his fishing trip Justin rides on hist 12 km south. The fish aren't biting so he changes location and goes 4 km west. What is

Sati [7]

Answer:

Justin's displacement is 12.65 km.

Step-by-step explanation:

Since Justin rides 12 km south, then 4 km west, his displacement can be determined by applying Pythagoras theorem to the sketch of his journey. Let his displacement be represented by s,

$/Hyp/^{2}$ = $/Adj1/^{2}$ + $/Adj2/^{2}$

$s^{2}$ = $/4/^{2}$ + $/12/^{2}$

= 16 + 144

$s^{2}$ = 160

⇒ s = $\sqrt{160}$

= 12.6491

s ≅ 12.65 km

Justin's displacement is 12.65 km.

6 0

3 years ago

Write a polynomial function that meets the given conditions. Answers may vary. Degree 2 polynomial with zeros of 2√ 13 and -2√13

MAVERICK [17]

Answer:

The polynomial function is $x^{2} - 52$

Step-by-step explanation:

A polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = (x - x_{1})*(x - x_{2})$ .

In this problem:

The roots are $x_{1} = 2\sqrt{13}$ and $x_{2} = -2\sqrt{13}$

Then

$(x - 2\sqrt{13}) \times (x - (-2\sqrt{13})) = (x - 2\sqrt{13}) \times (x + 2\sqrt{13}) = x^{2} - 2x\sqrt{13} + 2x\sqrt{13} -(2\sqrt{13})^{2} = x^{2} - 52$