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4 years ago

Find the reference angle for 791°

Mathematics

1 answer:

ch4aika [34]4 years ago

4 0

Answer:

71 degrees

Step-by-step explanation:

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Is (5,9) a solution to y=3x-6? Explain or show how you know.

Lisa [10]

Answer:

Yes

Step-by-step explanation:

Plug in the coordinate (5,9) into the equation

9=3(5)-6

9=15-6

9=9

3 0

3 years ago

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Question 3, thanks :)

tiny-mole [99]

Answer:

Between 8 and 13

Step-by-step explanation:

Just do subtraction.

"2-4 ,69" "4-5,39" "5-8,107" "8-13,133"

5 0

4 years ago

An old bone contains 80% of its original carbon-14. Use the half-life model to find the age of the bone. Find an equation equiva

Ira Lisetskai [31]

Answer:

An old bone contains 80% of its original carbon-14 in 1844.6479 years

Step-by-step explanation:

We know that

half life time of C-14 is 5730 years

so, h=5730

now, we can use formula

$P(t)=P_0(\frac{1}{2})^{\frac{t}{h} }$

we can plug back h

and we get

$P(t)=P_0(\frac{1}{2})^{\frac{t}{5730} }$

An old bone contains 80% of its original carbon-14

so,

P(t)=0.80Po

we can plug it and then we solve for t

$0.80P_0=P_0(\frac{1}{2})^{\frac{t}{5730} }$

$0.80=(\frac{1}{2})^{\frac{t}{5730} }$

$\ln \left(0.8\right)=\ln \left(\left(\frac{1}{2}\right)^{\frac{t}{5730}}\right)$

$t=-\frac{5730\ln \left(0.8\right)}{\ln \left(2\right)}$

$t=1844.6479$

So,

An old bone contains 80% of its original carbon-14 in 1844.6479 years

4 0

3 years ago

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Which expression represents the total cost

SSSSS [86.1K]

Answer:

The answer is 18k + 22p - 10

Step-by-step explanation:

That is the right answer

6 0

3 years ago

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Question 7 (10 points)

Agata [3.3K]

Answer:

i have no idea but can you solve this

Step-by-step explanation:

answer the questions about the poem

What kinds of descriptions does the writer use in the poem?

Does the poem feel happy, mad, sad, etc.?

Is there a clear rhyme scheme and rhythm?

Are there any words in the poem that are difficult to understand?

Which words stand out to you the most?

When your joys are of the sweetest

And your heart is light and free;

When your griefs are skimming fleetest,

Love, one moment think of me.

I’d not ask you to remember

Me when life is dull and drear;

When your hopes are but an ember

From a cold and vanished year;

Sorrow’s far too bleak a burden

To retain in mem’ry’s hall.

Friendship has no greater guerdon

Than to happiness recall.

So, when roses scent the twilight

Air with ling’ring dew damp breath,

Please remember me as eye-bright

Faith remembers until death.

4 0

3 years ago