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Darya [45]
3 years ago
7

PLEASE HELP IM OFFERING 15PTS AND BRAINLIEST ANSWER. PLEASE SHOW YOUR WORK

Mathematics
1 answer:
Murljashka [212]3 years ago
8 0
I need to se the blanket to answer
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Trigonometry<br> Trigonometric Functions<br> Given: Sec θ = (7/2), Find: Cos θ
Anettt [7]

Answer:

Cos θ = (2/7)

Step-by-step explanation:

Secant is just the inverse of cosine

3 0
4 years ago
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Are any of these numbers an Integer?<br> 15<br> 20/5<br> 44<br> 13/19<br> -35.47 <br> ;w; help
lilavasa [31]

Answer: 15, and 44 are integers.

Step-by-step explanation: For 15 to be an integer, 15 has to be a whole number. Furthermore, for 15 to be an integer, you should be able to write 15 without a fractional or decimal component. 15 is a whole number that can be written without a fractional component, thus 15 is an integer, as well as 44.

6 0
4 years ago
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Figure ABCD is a rhombus. What other term describes figure ABCD? kite square right trapezoid isosceles trapezoid
serg [7]

we have <D = (7x-1)°   ,    <A =(5x+25)°

{ all angles of square is equal to 90° }

<A  + <D  = 180°

5x + 25 +  7x -  1   = 180°

12 x    = 180   -  24

12x   =   156

x =   13

<A =  (5*13 +25)   =   90

< D  =  ( 7*13-1)      =     90

so ABCD is a square


5 0
3 years ago
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A surveyor is estimating the distance across a river. The actual distance is . The surveyor's estimate is . Find the absolute er
Nana76 [90]
<h2>Question:</h2>

A surveyor is estimating the distance across a river. The actual distance is 284.5 m. The surveyor's estimate is 300 m. Find the absolute error and the percent error of the surveyor's estimate. If necessary, round your answers to the nearest tenth.

<h2>Answer:</h2>

(i) Absolute error = 15.5m

(ii) Percent error = 5.5%

<h2>Step-by-step explanation:</h2>

<em>Given:</em>

Actual measurement of the distance = 284.5 m

Estimated measurement of the distance by the surveyor = 300 m

(i) The absolute error is the magnitude of the difference between the estimated value measured by the surveyor and the actual value of the distance across the river.

i.e

Absolute error = | estimated value - actual value |

Absolute error = | 300m - 284.5m | = 15.5m

(ii) The percent error (% error) is given by the ratio of the absolute error to the actual value then multiplied by 100%. i.e

% error = \frac{absoluteError}{actualValue} x 100%

% error = \frac{15.5}{284.5} x 100%

% error = 0.05448 x 100%

% error = 5.448%

% error = 5.5%  [to the nearest tenth]

3 0
3 years ago
Use the permutation formula below to find the number of outcomes when n = 5 and r = 2.
faltersainse [42]

nPr =  \frac{n!}{(n - r)!}

5P2 =  \frac{5!}{(5 - 2)!}  =  \frac{5 \times 4 \times  3 \times 2 \times 1}{3 \times 2 \times 1}  = 20

8 0
2 years ago
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