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3 years ago

!!!25 POINT REWARD FOR ACCURATE COMPLETION!!!

Mathematics

1 answer:

julsineya [31]3 years ago

6 0

Answer:

You have to Divide and then add

Step-by-step explanation:

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Please may someone help me with this question thank you

Maru [420]

Answer:

C. $\frac{12}{7}$

Step-by-step explanation:

To find the slope when you know two points, use this formula:

M = y₂ - y₁ ÷ x₂ - x₁

M = (4 - (-8)) ÷ (0 - (-7))

M = 12 ÷ 7

M = $\frac{12}{7}$

Hope that helps.

3 0

2 years ago

Show that √(1-cos A/1+cos A) =cosec A - cot A

Gennadij [26K]

Hi there!

$\sqrt{\frac{1-cosA}{1+cosA}} =$

We can begin by multiplying by its conjugate:

$\sqrt{\frac{1-cosA}{1+cosA}} * \sqrt{\frac{1+cosA}{1+cosA}} = \\\\\sqrt{\frac{(1-cosA)(1 + cosA)}{(1+cosA)(1 + cosA)}} =$

Simplify using the identity:

$1 - cos^2A = sin^2A$

$\sqrt{\frac{(1-cos^2A)}{(1+cosA)^2}} =\\\\\sqrt{\frac{(sin^2A)}{(1+cosA)^2}} =$

Take the square root of the expression:

${\frac{sinA}{1+cosA} =$

Multiply again by the conjugate to get a SINGLE term in the denominator:

${\frac{sinA}{1+cosA} * {\frac{1-cosA}{1-cosA} =\\$

Simplify:

${\frac{sinA(1-cosA)}{1-cos^2A} =$

Use the above trig identity one more:

${\frac{sinA(1-cosA)}{sin^2A} =$

Cancel out sinA:

${\frac{(1-cosA)}{sinA} =$

Split the fraction into two:

${\frac{1}{sinA} - \frac{cosA}{sinA} =$

Recall:

$1/sinA = cscA\\\\cosA/sinA = cotA$

Simplify:

$\frac{1}{sinA} + \frac{cosA}{sinA} = \boxed{cscA - cotA}$

5 0

2 years ago

What's y / 4 equals -3

katovenus [111]

Y/4 = -3

Multiply both sides by 4

Y = -12

8 0

3 years ago

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Jasper and Corey have saved up a total of $78.00. Jasper has saved 6 dollars more than twice as much as Corey. How much has Core

Novay_Z [31]

Answer:

24 is the answer..for this concept

4 0

3 years ago

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3(x+5)=9 what is the value off x

Klio2033 [76]

Answer:

x = -2

Step-by-step explanation:

4 0

2 years ago

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