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IceJOKER [234]
3 years ago
9

Help, please and thanks

Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0

Answer:

18 \sqrt{5}

or 40.2 in decimal form

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A triangle drawn on a map has sides that measure 15 cm, 8 cm, and 10 cm. The shortest of the corresponding real-life distances i
nalin [4]

Set up a proportion.

8/127=15/x

Cross multiply

8x=1,905

Divide both sides by 8

x=238.125

The longest of the real-life distances is 238.125 km.

Hope this helps :)

5 0
3 years ago
Let v = (v1, v2) be a vector in r2. show that (v2, −v1) is orthogonal to v, and use this fact to find two unit vectors orthogona
hodyreva [135]
Because v1 x v2 + v2 x (-v1) = v1 x v2 - v2 x v1 = v1 x v2 - v1 x v2 = 0, vector (v1,v2) is orthogonal to (v2,-v1);
Let (a,b) be an unit vector orthogonal to (9,40);
So, a^2 + b^2 = 1 and a x 9 + b x 40 = 0;
Then, a = - 40 x b / 9;
Finally, 160 x b^2 / 81 + b^2 = 1;
160 x b^2 + 81 x b^2 = 81;
241 x b^2 = 81;
b^2 = 81 / 241;
b = + or - 9/\sqrt{241}
a = + or - 40/\sqrt{241}
We have (+40/\sqrt{241};9/\sqrt{241}) and (-40/\sqrt{241};-9/\sqrt{241});
3 0
3 years ago
Read 2 more answers
F(x)=4x+3 and h(x)=x^3 find (hof)(1)
zavuch27 [327]

~Hello There!~

4(1) + 3 = 7

(7)^3 = 343

Hope This Helps You!

Good Luck :)

Have A Great Day ^_^

- Hannah ❤

6 0
2 years ago
Please please i dont get it can you plz help me q.24
Bess [88]
The unknown value there is 1500.
It is increasing by 250
7 0
3 years ago
Joelle bought some fruit at the store. They bought 5 apples and a bunch of bananas. The bananas cost $1.50, and the total cost w
Softa [21]

Answer:

$3.74

Step-by-step explanation:

we already know the cost of the banana's and it gives us the total price including apples. So $5.24 - $1.50 = $3.74, and the 3.74 is the cost of apples

4 0
2 years ago
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