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3 years ago

7 1 3 — + — + — 9 7 5

Mathematics

1 answer:

Ghella [55]3 years ago

6 0

What kind of equation is that? That don't even look like an equation.

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HELP. Pleaseee. I have no idea what this means.

Vilka [71]

Answer:

Step-by-step explanation:

roots are the intercepts at the x axis I believe

8 0

3 years ago

Two boats leave port at noon. Boat 1 sails due east at 12 knots. Boat 2 sails due south at 8 knots. At 2 pm the wind diminishes

Ivan

Answer:

14.86 knots.

Step-by-step explanation:

<em>Given that:</em>

The boats leave the port at noon.

Speed of boat 1 = 12 knots due east

Speed of boat 2 = 8 knots due south

At 2 pm:

Distance traveled by boat 1 = 24 units due east

Distance traveled by boat 2 = 16 units due south

Now, speed of boat 1 changes to 9 knots:

At 3 pm:

Distance traveled by boat 1 = 24 + 9= 33 units due east

Distance traveled by boat 2 = 16+8 = 24 units due south

Now, speed of boat 1 changes to 8+7 = 15 knots

At 5 pm:

Distance traveled by boat 1 = 33 + 2 $\times$ 9= 51 units due east

Distance traveled by boat 2 = 24 + 2 $\times$ 15 = 54 units due south

Now, the situation of distance traveled can be seen by the attached right angled $\triangle AOB$ .

O is the port and A is the location of boat 1

B is the location of boat 2.

Using pythagorean theorem:

$\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}\\\Rightarrow AB^{2} = OA^{2} + OB^{2}\\\Rightarrow AB^{2} = 51^{2} + 54^{2}\\\Rightarrow AB^{2} = 2601+ 2916 = 5517\\\Rightarrow AB = 74.28\ units$

so, the total distance between the two boats is 74.28 units.

Change in distance per hour = $\dfrac{Total\ distance}{Total\ time}$

$\Rightarrow \dfrac{74.28}{5} = 14.86\ knots$

6 0

3 years ago

What is the value of y?<br> Please enter your answer, as an exact value

Hatshy [7]

Tan (60) = y/ 5
y = tan(60) * 5
and you know tan(60) = √3
so
y = 5√3

answer
5√3 (exact value)

4 0

3 years ago

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One box contains six red balls and four green balls and a second box contains three red balls and ve green balls. a ball is rand

Delicious77 [7]

tyxutxcujgcu yfuycuycuycyucb iyiycjhcluyci

7 0

3 years ago

The product of six and a number increased by six?

ExtremeBDS [4]

Answer: 6•(n+6)

Step-by-step explanation:

n is number

can be any letter

5 0

3 years ago

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