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Virty [35]
2 years ago
9

Given that secA = 13/5, what is the value of cosA​

Mathematics
1 answer:
AleksAgata [21]2 years ago
8 0

Answer:

cos A = 5/13

Step-by-step explanation:

sec A = 1/cos A

sec A = 1/cos A 13/5 = 1/cos A

cos A = 5/13

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-6/7 graph on the number line
avanturin [10]
That would be in the II quadrant
So across to negative 6 and up to 7 is your coordinate
5 0
3 years ago
Paige rolls a number cube sixty-four times. The number 4 comes up fourteen times. The number 3 comes up six times. Rounded to th
3241004551 [841]

Answer:

31%

Step-by-step explanation:

To determine the probability of obtaining 3 or any number in a roll, we divide the number of outcomes with the sample space.

           probability of 3 :    n = 6/64 = 3/32 = 0.09375

           probability of 4 :    n = 14/64 = 7/32 = 0.21875

Since, we use the conjuction "or", we therefore add up these probabilities. 

                     n = 5/16 or 0.3125

Hope this Helps

6 0
3 years ago
Una persona asegura que su casa tiene forma rectangular y que el perímetro de la misma es de 18 m y que además, su área es de 21
leva [86]

Considerando las fórmulas para el perímetro y el área de un rectángulo, hay que se chega en una <u>eccuación cuadrática sin solución</u>, o sea, las medidas no son posibles y la persona estaba mintiendo.

<h3>¿Cuál es la fórmula para el perímetro y el área de un rectángulo?</h3>

Considerando que las dimensiones son l y w, hay que:

  • El perímetro es: P = 2(l + w).
  • El área es: A = lw.

El <u>perímetro es de 18 m</u>, o sea:

2(l + w) = 18

l + w = 9

l = 9- w.

El <u>área es de 21 m²</u>, o sea:

lw = 21

(9- w)w = 21

-w² + 9 - 21 = 0

w² - 9w + 21 = 0

El discriminante es dado por:

D = 9² - 4 x 1 x 21 = -3.

El discriminante negativo implica que la <u>eccuación cuadrática no tiene solución</u>, o sea, las medidas no son posibles y la persona estaba mintiendo.

Puede-se aprender más a cerca de el perímetro y el área de un rectángulo en brainly.com/question/26475963

#SPJ1

4 0
1 year ago
How many bracelets did christa sell in July? HELP ASAP PLEASEEE
LiRa [457]

Answer:

20

step by step explanation:

8 0
3 years ago
Read 2 more answers
a foreman must order enough sod to cover a dirt area 36 feet wide by 28 feet long. each piece of sod is 3 feet long and 12 inche
Andrews [41]

If we divide the area we have to cover by the area of a piece, we will get the number of pieces needed:

n=\dfrac{\text{dirt area}}{\text{piece area}}=\dfrac{36\times 28}{3\times 12} = \dfrac{36\times 28}{36}=28

3 0
2 years ago
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