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Ber [7]
3 years ago
10

Solve please Cos 64 degrees =y/8

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
5 0

Answer:

The value of y is 3.51

Step-by-step explanation:

The given equation is Cos 64 = y/8

We have to calculate the value of y

Since Cos 64° = 0.43837

By putting value of Cos 64 in the equation

0.43837 = \frac{y}{8}

y = 0.43837 × 8

  = 3.5069 ≈ 3.51

Therefore, the value of y = 3.51

Mariana [72]3 years ago
4 0
  cos(64) = ¹/₈y
8cos(64) = 8(¹/₈y)
8cos(64) = y
  8(0.44) ≈ y
      3.52 ≈ y
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Determine which set of numbers can be the measures of the sides of a triangle.
finlep [7]

Answer:

A. 13, 10, 16

Step-by-step explanation:

If three sides of triangle have measures a, b and c, then

a+b>c\\ a+c>b\\b+c>a

Check all options:

A. a=13, b=10, c=16

Thus,

a+b=13+10=23>16=c\\a+c=13+16=29>10=b\\b+c=10+16=26>13=a

This option is true

B. a=1, b=2, c=3

Then

a+b=1+2=3=c, but a+b must be greater than c, so

this option is false

C. a=5.2, b=11, c=4.9

Then

a+c=5.2+4.9=10.1 but a+c must be greater than b, so

this option is false

D. a=208, b=9, c=219

Then

a+b=208+9=217 but a+b must be greater than c, so

this option is false

8 0
3 years ago
Read 2 more answers
What is the mean of the data set graphed on the dot plot?
yanalaym [24]

Answer:

The mean is the average of all the numbers. So your answer is C. 45

Step-by-step explanation:

Add all of the numbers

0 + 10 + 30 + 30 + 40 + 50 + 70 + 80 + 95 = 405

Since there are 9 numbers, divide 405 by 9

405/9 is 45

That's your answer! I hope this helps!

7 0
4 years ago
How many ways are there to assign six jobs to five different employees if every employee is assigned at least one job?
NARA [144]

Answer:

There are 1800 different ways.

Step-by-step explanation:

A permutation give as the total ways in which we can organized a group of elements where the order is important. So, the  permutation of n elements when all of them are not different is calculate as:

\frac{n!}{n1!n2!...nk!}

Where k is the number of elements that are different, n1, n2, ... nk are the number of times that very element appears and n is equal to n1+n2+...nk.

In this case we have 5 differents and general ways to assign six jobs to five different employees:

1. the first employee receive 2 jobs

2. the second employee receive 2 jobs

3. the third employee receive 2 jobs

4. the fourth employee receive 2 jobs

5. the fifth employee receive 2 jobs

Then, if the first employe receive 2 jobs, its mean that we have six people to permutate and the first person appears two times.

So the permutation of this 6 element in which one is repeat 2 times is calculate as:

\frac{6!}{2!*1!*1!*1!*1!*1!}=360

Therefore, there are 360 ways to organized five different employees into 6 jobs where the first person can receive two jobs.

For the other 4 options we can made the same calculation, so the total number of ways that we can organized five employees in six jobs are calculate as:

360*5=1800

Finally there are 1800 different ways.

3 0
3 years ago
If the smaller of two numbers is one half of the larger number and the sum of the two numbers is 60 find the numbers
Dennis_Churaev [7]

Larger number = X

Smaller number = 1/2X

X + 1/2X = 60

Simplify:

1 1/2x = 60

Divide both sides by  1 1/2:

x = 40

The numbers are 20 and 40

7 0
2 years ago
When a 40-foot pole casts a shadow of
Semenov [28]

Set up a ratio with height over shadow height:

40/30 = x/15

Cross multiply:

40 x 15 = 30x

600 = 30x

Divide both sides by 30:

X = 20

The tree is 20 feet tall.

5 0
3 years ago
Read 2 more answers
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