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insens350 [35]
3 years ago
7

PLS HELP SHOW ALL YOUR WORKING OUT :D BRAINLIEST

Mathematics
1 answer:
vazorg [7]3 years ago
6 0

Answer:

18.1 cm

Step-by-step explanation:

Work out CD

\sqrt{16^{2}-7^{2}  } = 14.38749457 ⇒ Pythagoras Theorem

Use CD and AD to work out AC

\sqrt{14.38749457^{2}+11^{2}  } = 18.11077028 ⇒ Pythagoras Theorem

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-2 1/4 divided by (-1 1/2) =
Diano4ka-milaya [45]

Answer:

9/22

Step-by-step explanation:

First:

Convert any mixed numbers to fractions.

Then your initial equation becomes:

−9/4 ÷ −11/2

Applying the fractions formula for division,

=−9×2 divided by 4×−11

=−18/−44

Simplifying -18/-44, the answer is

=9/22

8 0
3 years ago
A metal bar weighs 9.25 ounces. 65% of the bar is gold. how many ounces of gold is in the bar?
Elza [17]
Not sure I'm right but:

If the bar weighs 9.25 ounces and 65% of the bar is gold, you'd do 65% of 9.25. So the answer would be <span>65% of 9.25= 6.0125</span>
6 0
3 years ago
What is 12.1 repeating as a fraction in simplest form?
dem82 [27]
The answer is two, one over nine⬇️
2\ \frac{1}{9}
8 0
3 years ago
Read 2 more answers
What is 0.9(x-20)=830 Rounded to the Hundreths (second) decimal place
enot [183]

Answer:

x= 942.22

Step-by-step explanation:

.9x-18=830

.9x=848

x=942.222222222

which will be x= 942.22

4 0
3 years ago
The height of a ball dropped from the top of a 450-foot tall building can be described by the expression
BaLLatris [955]

Answer:

The answer is 386 feet.

Step-by-step explanation:

This equation simply asks to plug in a value that gives you the final value of the height. 450 is the initial height, and r (or l) is referred to as the amount of seconds after the item is dropped. 16 is the constant value of feet that the ball drops within one second.

Therefore, by substituting 4 for r (or l) and multiplying it by 16, you will receive 64 feet in 4 seconds. Finally, you need to subtract this from 450 feet, giving you a final answer of 386 feet.

8 0
3 years ago
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