How do you find x???

Mathematics

1 answer:

Dafna11 [192]3 years ago

8 0

Turn it to y gvcfhvfbgxtcsthh

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Advance says you can double your money in 10 years if you put $1,000 and a simple interest account What annual interest rate doe

lesya692 [45]

Ok
I=PRT
P=present amount
I=interst
T=time in years
R=rate in percent

when you double your money, interest=present amount
I=1000=P
T=10 years
so
1000=1000(10)(R)
1000=10000R
divide both sides by 10000
0.10=R
10% is answer

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4 years ago

4 ten thousand 8 hundred ÷10 on standard form

Murljashka [212]

40,810 if you mean 4 thousand 8 hundred and 10 then its 4,810

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4 years ago

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stealth61 [152]

The 2nd one. The one that says CD=DA, DA=ZX, AC=YZ

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4 years ago

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A rescue helicopter flew from its home base for 35 kilometers on a course of 330 degrees to pick up an accident victim. It then

artcher [175]

I've drawn a triangle to represent the journey (see attached.

The angle from Home to Victim to Hospital is:

a = $90 - (360 - 330) = 90- 30 = 60^o$

Using the cos rule, we can solve for the length x:

$a^2 = b^2 +c^2 - 2bccosA
\\x^2 = 35^2+25^2-2(35)(25)cos60
\\x^2 = 1850 - 875
\\x^2 = 975
\\x = \sqrt{975}
\\x = 31.2249...$

Using the cos rule, we can solve for angle b:

$a^2 = b^2 +c^2 - 2bccosA
\\35^2 = 31.22...^2+25^2-2(31.22...)(25)cosb
\\1225 = 975 + 625 - 1561.249...cosb
\\-375 = -1561.249...cosb
\\b = cos^{-1}( \frac{-375}{-1561.249...}) 
\\b = 76.1...$

So the bearing the helicopter has to travel is:

270 - 76.1 = <u>193.9 degrees (1 dp)</u>

And the distance it travels is <u>31.2 km (1 dp)</u>

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3 years ago

Simplify 4a-9b-2(2a-3b)

lys-0071 [83]

Answer:

-3b

Step-by-step explanation:

4a - 9b - 2(2a - 3b)

= 4a - 9b -4a + 6b

= -3b

7 0

4 years ago