2 years ago

Unit 3 Exam

Mathematics

1 answer:

ohaa [14]2 years ago

5 0

Answer:

b=√119

Step-by-step explanation:

a2+b2=c2

(5×5)+(b2) =(12×12)

25+b2=144

b2=144-25

b2= 119

b=√119

You might be interested in

[ it's a fraction but i can't write it as such. ]

larisa [96]

Answer:

the value of m will be 20

8 0

3 years ago

A paper clip is just over 4 cm long. How many paper clips like this can be made from a straight piece of wire 10 meters long?

bixtya [17]

Answer:

25 Paper Clips

Step-by-step explanation:

100cm is equal to 1 meter. So to find the answer you would need to take the whole of the centimeter (100) and divide that by the paper clips length (4).

100/4 = 25

So, to form a straight line 10 meters long you would need 25 paper clips each 4cm long.

5 0

2 years ago

Can somebody help me with this question !

Pavlova-9 [17]

Answer:

No please! Mr excuse me I am not your type bye

3 0

2 years ago

if you do this and explain how to do it i will rait you 5 stars and give you a brainlyieist it has to be simplify 2(5+3x)+(x+10)

Paha777 [63]

Answer:

20+7x

Step-by-step explanation:

you'd multiply 2 by 5 and 2 by 3x which will give you 10+ 6x; Then add the others : 2(5+3x)+(x+10) would be 10+6x+x+10 so its 20+7x. .

8 0

2 years ago

Read 2 more answers

One of the main contaminants of a nuclear accident, such as that at Chernobyl, is strontium-90, which decays exponentially at a

igor_vitrenko [27]

Answer: $P=0.975^t$

Step-by-step explanation:

We know that the general form of the exponential decay formula is

$y=A(1-r)^t$ , where y is final amount remaining after t time, A is the original amount and r is the rate of decay

Now, the ratio of strontium-90 remaining, p , as a function of years, t , since the nuclear accident. $P=\frac{A(1-0.02)^t}{A}=\frac{(0.975)^t}{1}$

Hence, the ratio of remaining since the nuclear accident is $P=0.975^t$

3 0

2 years ago

Read 2 more answers