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3 years ago

Describe the error in the work below.

Mathematics

2 answers:

TiliK225 [7]3 years ago

8 0

x should be the subject

ollegr [7]3 years ago

5 0

Answer:

x should be the subject

Step-by-step explanation:

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Given sin(−θ)= −1/4 and tanθ= 15√15 .<br><br> What is the value of cosθ ?

dangina [55]

$\sin = \frac{y}{r} \\ \\ \tan = \frac{y}{x} \\ \\ \cos = \frac{x}{r} \\ \\ {x}^{2} + {y}^{2} = {r}^{2}$

$- \sin = \frac{ - 1 \: = \: y}{4 \: = \: r}$
$15 \sqrt{15} = \frac{1}{x} \\ \\ x = .017$
$\cos = \frac{.017}{4} = .0043$

4 0

3 years ago

Need help 8th grade math

Lana71 [14]

Answer:

Step-by-step explanation: try to get x in one side and the whole number to another side to get x= blank

8 0

3 years ago

Read 2 more answers

In rhombus MNPQ, diagonals MP and NQ intersect at point K. If m_MQP = 56', then which of the

Murrr4er [49]

the answer is 90 degrees

3 0

3 years ago

Please help this is 95% of my grade<br>

kipiarov [429]

Answer:

Part 1:

Domain= {2,3,8,9}

Range = {7,9,14}

Part 2: Yes it is not a function

Step-by-step explanation:

Domain is the first number

Range is the second.

Domain= {2,3,8,9}

Range = {7,9,14} ( Notice that 14 is noted twice so just put it as once and this is not part of the answer)

Function: Is any of the domain numbers the same: Answer Yes it's a function.

6 0

3 years ago

The language arts teacher wants to know whether the students in the entire school prefer a debate or an speech. The teacher draw

Georgia [21]

The language art teacher wants to know the opinion of the ENTIRE school, so it would be fair if the teacher takes a sample from the ENTIRE school population. She can use the stratified sampling method where she can take a proportionate sample from each grade.

Correct answer: All students in each grade

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4 years ago