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2 years ago

Which of the following is the inverse of N(r) if N(r)=8r+17

Mathematics

1 answer:

BaLLatris [955]2 years ago

8 0

$N=8r+17 \\ 8r=N-17 \\ r= \frac{N-17}{8} \\ Inverse \ is \ \frac{r-17}{8}$

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Suppose ABC is a right triangle with sides a, b, and c and right angle at C. Find the unknown side length using the Pythagorean

Leno4ka [110]

Answer:

a = $\sqrt{7}$

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.:

Suppose ABC is a right triangle with sides a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the values of the six trigonometric functions for angle B. when b=3 and c=4.

My answer:

We will Pythagoras theorem, which states that the sum of squares of two legs of a right triangle is equal to the square of the hypotenuse of right triangle. Because the question says that ABC is a right triangle.

$a^2+b^2=c^2$

Given that: b=3 and c=4

$a^2+3^2=4^2a^2+9=16a^2+9-9=16-9a^2=7$

so a = $\sqrt{7}$

We know that tangent relates opposite side of a right triangle with adjacent side.

$\text{tan}(B)=\frac{a}{b}\\\text{tan}(B)=\frac{\sqrt{7}}{3}$

Please have a look at the attached photos.

3 0

2 years ago

Four less than the product of 7 and a number is equal to 8 Use the variable b for unknown number

Akimi4 [234]

Answer:12/7

Step-by-step explanation:

7b-4=8

7b-4+4=8+4

7b=12

b=12/7

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2 years ago

Perform the operation. enter your answer as in scientific notation 9×10²-5.6×10²

algol [13]

The answer is 340, not super good at math so dont know what scientific notation is but there you go

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2 years ago

What is the y intercept of the line -4x + 6y = -12?

snow_lady [41]

-4x + 6y = -12
-4(0) + 6y = -12
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 6 6
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The y-intercept of the equation is 2.

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2 years ago

ILL MARK BRAINIEST IF YOU DO THIS RIGHT!!!

Arlecino [84]

First let’s find the equation:
a = (42-21)/(26-13)
a= 21/13
y-y1 = a(x-x1)
y-21=(21/13)(x-13)
y-21=(21/13)x - 21
y=(21/13)x-21+21
y=(21/13)x

Now we will find the other point:
X = 2 >> y =(21/13)*2 = 3.23 (not)
X = 3 >> y =(21/13)*3 = 4.84 (not)
X = 4 >> y =(21/13)*4 = 6.46 (not)

X = 5 >> y =(21/13)*5 = 8.07 (yes) find the answer

7 0

1 year ago