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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!

Mathematics

1 answer:

zhenek [66]3 years ago

7 0

Answer:

2.05

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relationship between sides of a right triangle and trig functions. Since you want the tangent, you are interested in ...

Tan = Opposite/Adjacent

The side opposite angle C is ED=80. The side adjacent to angle C is CD=39. Then the tangent is ...

tan(C) = ED/CD = 80/39

tan(C) ≈ 2.05

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3 years ago

Pls help with these questions

postnew [5]

Find x-intercept and y-intercept then you can draw the graph.

For example, the first question.

$y=-3x+2$

To find the y-intercept, x = 0

So substitute x = 0 in the equation.

$y=0+2\\y=2$

[Note]: You don't need to find the y-intercept, because from, $y=ax+b$

a is slope and b is y-intercept, you know b then you know y-intercept. For example b = 2 then y-intercept is at 2.

To find the x-intercept, y = 0

$-3x+2=0\\-3x=-2\\x=\frac{2}{3}$

Therefore, y-intercept = 2 and x-intercept = 2/3

(Try do another problems, just do the same. When you want to find the y-intercept, just look at the value of b or substitute x = 0 and When you want to find the x-intercept, just substitute y = 0 then solve for x.)

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3 years ago

3. Could a 5 x 8 matrix have dim Col A 6 and dim Nul A - 2? Justify your answer. (Hint: Think about the possible pivot rows and

alexdok [17]

Answer:

Step-by-step explanation:

A 5x8 matrix $A$ represents a linear transformation between the vector space $\mathbb{R}^8$ and $\mathbb{R}^5$ . Remeber that the columns of $A$ generate the image of the linear transformation, which is a vector subspace of $\mathbb{R}^5$ . Therefore, $\dim \text{Col}A \leq 5$ , which is the dimension of the the total space.