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Dvinal [7]
3 years ago
7

A woman leaves home and walks 3 miles west, then 2 miles southwest. how far from home is she, and in what direction must she wal

k to head directly home?
Mathematics
2 answers:
Reika [66]3 years ago
6 0
She is 3 miles far from home and she must walk in north east direction to walk to home.
stich3 [128]3 years ago
5 0

Answer:North-East

Step-by-step explanation:

First she walk 3 miles west and then 2 miles southwest

i.e. she is now Southwest direction with respect to initial position

she vertically 2miles below initial position

and horizontally 3+2cos45 away from initial position

tan\theta =\frac{2}{3+2cos45}

Where \theta is angle made by her with horizontal

\theta =24.37

she should walk at \theta =24.37 North of east to reach directly home

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Determine the exact value of sin 240
iren2701 [21]

simplify : the exact value of sin 240

Explanation: sin(240)=sin(60+180)=-sin60

\begin{gathered} -sin60=-\frac{\sqrt{3}}{2} \\ =-0.87 \end{gathered}

Final answer: the required vaalue of the sin 240 is -0.87

7 0
10 months ago
Find the equation of the sphere in standard form centered at (−6,10,5) with radius 5.
Dovator [93]

Answer:

The equation of the sphere in standard form is

x^{2} +y^{2}+z^{2} +12 x-20 y-10 z+136=0

Step-by-step explanation:

<u>Step 1</u>:-

The equation of the sphere having center and radius is

(x-h)^{2} +(y-k)^{2} +(z-l)^{2} = r^{2}

Given centered of the sphere is (-6,10,5) and radius r=5

(x-(-6))^{2} +(y-10)^{2} +(z-5)^{2} = 5^{2}

on simplification,we get

using (a+b)^{2} =a^{2} +2 a b+b^{2}

using (a-b)^{2} =a^{2} -2 a b+b^{2}

simplify , we get

x^{2} +y^{2}+z^{2} +12 x-20 y-10 z+136=0

8 0
3 years ago
5. What is the combined weight of the 3/4-lb bags?<br>​
Andrew [12]

The answer would be 3.175 kg

6 0
3 years ago
Read 2 more answers
Rei is barricading a door to stop a horde of zombies. She stacks boxes of books on a table in front of the door. Each box weighs
Alinara [238K]

Answer: The answer is \textup{W}=70+30x.


Step-by-step explanation: Given that Rei is barricading a door to stop a horde of zombies by satcking boxes of books on a table in front of the door.

The weight of each box is 30 kilograms and the weight of the table with 8 boxes on the top is 310 kilograms.

So, if 'g' denotes the weight of the table alone, then we have

\textup{g}+8\times 30=310\\\\\Rightarrow \textup{g}+240=310\\\\\Rightarrow \textup{g}=310-240\\\\\Rightarrow \textup{g}=70.

Therefore, the weight of the table without boxes is 70 kilograms.

Now, if 'W' is the total weight of the barricade, then it can be written as a function of 'x', the number of boxes Rei stacks on the table. The expression is as follows -

\textup{total weight of the barricade}=\textup{weight of the table alone}+30\times \textup{number of boxes}.

Thus, the required function is

\textup{W}=70+30x.



6 0
3 years ago
Read 2 more answers
Divide 33 photos into two groups so the ratio is 4 to 7
jeka57 [31]
33 photos in a 4x to 7x ratio

4x + 7x = 33
11x = 33
x = 3

33 photos can be put in a 4(3) to 7(3) ratio

which is a 12 to 21 ratio

so 12 photos on one side, and 21 on the other side to get the ratio of 4 to 7

Note:
<span>a(b) = ab = a x b = a times b</span>
4 0
3 years ago
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