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2 years ago

1. Choose the problem that matches the number line solution

Mathematics

2 answers:

makkiz [27]2 years ago

8 0

2x3/5 because if you look at the line, it moves twice so thats 2, and it goes over to 3/5 each time
hope this helps

Taya2010 [7]2 years ago

5 0

Answer:

2×3/5

..................

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Help now plssss!!!!!

blondinia [14]

Answer:

common denominator = 24

1/8 = 3/24

1/6 = 4/24

Step-by-step explanation:

to find common denominator:

8 - 8, 16, 24

6 - 6, 12, 18, 24

7 0

3 years ago

Choose the congruence theorem that you would use to prove the triangles congruent.

LekaFEV [45]

The correct answer is SSS

7 0

3 years ago

Is this correct??<br>please help

maw [93]

Answer:

Step-by-step explanation:

All the following answers are correct 1:=142.5 2:=165 3:=153.75 ^2m You got them all right Conratulations.

8 0

3 years ago

Solve for x.<br> Your answer must be simplified.<br> -3

kipiarov [429]

7>x

I guess thats how you do this. I have this one before and I hope I got it right

8 0

2 years ago

An Archaeologist in Turkey discovers a spear head that contains 79% of its original amount of C-14. Find the age of the spear he

agasfer [191]

Answer:

The age of the spear head is of 1938 yers.

Step-by-step explanation:

The amount of carbon 14 after years is given by the following equation:

$Q(t) = Q(0)e^{-rt}$

In which Q(0) is the initial amount and r is the decay rate.

The half life of carbon 14 is 5700 years.

This means that $Q(5700) = 0.5Q(0)$

$Q(t) = Q(0)e^{-rt}$

$0.5Q(0) = Q(0)e^{-5700r}$

$e^{-5700r} = 0.5$

$\ln{e^{-5700r}} = \ln{0.5}$

$-5700r = \ln{0.5}$

$5700r = -\ln{0.5}$

$r = -\frac{\ln{0.5}}{5700}$

$r = 0.00012160476$

$Q(t) = Q(0)e^{-0.00012160476t}$

We have to find:

t for which Q(t) = 0.79Q(0). So

$Q(t) = Q(0)e^{-0.00012160476t}$

$0.79Q(0) = Q(0)e^{-0.00012160476t}$

$e^{-0.00012160476t} = 0.79$

$\ln{e^{-0.00012160476t}} = \ln{0.79}$

$-0.00012160476t = \ln{0.79}$

$0.00012160476t = -\ln{0.79}$

$t = \frac{-\ln{0.79}}{0.00012160476}$

$t = 1938.43$

Rounding to the nearest year.

The age of the spear head is of 1938 yers.

8 0

3 years ago