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deff fn [24]
3 years ago
9

Which expression is undefined? A)sin-1(1) B)sin-1 (-2) C)cos-1(0) D)cos -1(-1)

Mathematics
1 answer:
mihalych1998 [28]3 years ago
4 0

Answer:

B

Step-by-step explanation:

Here, we want to find which of the expressions is undefined

kindly note that

sin^-1 is arcsin

cos^-1 is arccos

A. arcsin (1) = 90 degrees

B. arcsin (-2) = undefined

c. arccos 0 = 90 degrees

d. arccos (-1) = 180

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Step-by-step explanation:

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3 years ago
What is the length of the altitude to the longest side of a triangle, if the lengths
sergeinik [125]

Answer:

hb ≈ 7.06cm

Step-by-step explanation:

Using the formulas:

A=hbb

2

A=s(s﹣a)(s﹣b)(s﹣c)

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Solving for <em>hb</em>

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6 0
3 years ago
Use intercepts to graph the linear equation 5x + 3y = 30.
miv72 [106K]

Answer x=6 and y=10

Explanation:

Replace each variable in turn with 0 and solve

5x+3y=30  Put zero in place of x and solve for y

5(0)+3y=30

\frac{3y}{3} =\frac{30}{3}

y=10 The y- intercept is 10

5x+3y=30 Put zero in place of y and solve for x

5x+3(0)=30

\frac{5x}{5} =\frac{30}{5}

x=6  The x-intercept is 6

5 0
3 years ago
Find the greatest number that divides 56 and 84 exactly​
kvv77 [185]

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28

Step-by-step explanation:

Find the gcf

4 0
3 years ago
Kara earned $136.75 last week working 16 hours. She earned $10.50 per hour at the fast food restaurant and $4.25 per hour helpin
Evgesh-ka [11]

Answer:

ANSWER: she worked 11 hours at the fast food restaurant and 5 hours helping her aunt

Step-by-step explanation:

First we are going to try to find how many hours she worked on the fast food restaurant so you multiply 4.25 time 16 and x

10.50x + 4.25(16-x) =136.75

10.50x + 68 - 4.25x= 136.75

Then, you subtract 68 from both sides and subtract 4.25x from 10.50x

6.25x=68.75

Divide

X=11 that is how many hours she worked at the FAST FOOD RESTAURANT

Then 16-11 and that gives us how many hours she helped her aunt.

3 0
3 years ago
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