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2 years ago

11

What is the slope of the line that passes through the points (1,-6) and (-8,9)?

1 answer:

jolli1 [7]2 years ago

4 0

Answer:dhg

Step-by-step explanation:

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Please help me with this question

frosja888 [35]

44.5 because u measure the length with width

4 0

2 years ago

Can you prove it??<br>it's hard,I tried but couldn't solve this.

BARSIC [14]

I'll abbreviate $s=\sin\theta$ and $c=\cos\theta$ , so the identity to prove is

$\dfrac{s+c+1}{s+c-1}-\dfrac{1+s-c}{1-s+c}=2\left(1+\dfrac1s\right)$

On the left side, we can simplify a bit:

$\dfrac{s+c+1}{s+c-1}=\dfrac{s+c-1+2}{s+c-1}=1+\dfrac2{s+c-1}$

$\dfrac{1+s-c}{1-s+c}=-\dfrac{-2+1-s+c}{1-s+c}=-1+\dfrac2{1-s+c}$

Then

$\dfrac{s+c+1}{s+c-1}-\dfrac{1+s-c}{1-s+c}=2\left(1+\dfrac1{s+c-1}-\dfrac1{1-s+c}\right)$

So the establish the original equality, we need to show that

$\dfrac1{s+c-1}-\dfrac1{1-s+c}=\dfrac1s$

Combine the fractions:

$\dfrac{(1-s+c)-(s+c-1)}{(s+c-1)(1-s+c)}=\dfrac{2-2s}{c^2-s^2+2s-1}$

We can rewrite the denominator as

$c^2-s^2+2s-1=c^2+s^2-2s^2+2s-1$

then using the fact that $c^2+s^2=\cos^2\theta+\sin^2\theta=1$ , we get

$1-2s^2+2s-1=2s-2s^2$

so that we have

$\dfrac1{s+c-1}-\dfrac1{1-s+c}=\dfrac{2-2s}{2s-2s^2}=\dfrac1s$

as desired.

6 0

3 years ago

we have been going through this in class but I missed a week of school for vacation and I don't really understand what to do

Gwar [14]

Answer:

no idea how to make this happen with Mr and some

6 0

2 years ago

Anyone wanna help me

EleoNora [17]

$\huge\text{Hey there!}$

$\mathsf{4(3 + 5) - 3\times9^2}$

$\mathsf{3 + 5 = \bf 8}$

$\mathsf{4(8) - 3\times 9^2}$

$\mathsf{4(8) = \bf 32}$

$\mathsf{32 - 3\times9^2}$

$\mathsf{9^2 = 9\times9 = \bf 81}$

$\mathsf{32 - 3\times 81 }$

$\mathsf{-3\times81 =\bf -243}$

$\mathsf{32 - 243}$

$\mathsf{= \bf -211}$

$\boxed{\huge\text{= \bf -211}}$

$\boxed{\boxed{\mathsf{OVERALL\ ANSWER: \bf 4(8) - 3 \times 81 \rightarrow }\huge\text{\bf Option C}}}\huge\checkmark$

$\large\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{Amphitrite1040:)}$

6 0

2 years ago

Earth's diameter is

TEA [102]

Answer:

Area

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers