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2 years ago

NEED HELP!!! Can someone help me with 5, 7, and 8??? Need this asap!!! THANK YOU!!!

Mathematics

2 answers:

Serjik [45]2 years ago

6 0

Answer:

5) 8/17 = .471

7) 8/17 = .471

8) 15/17 = .88

Step-by-step explanation:

hope that helps

Advocard [28]2 years ago

4 0

Answer:

5. $\frac{\sqrt{2} }{2}$

7. $\frac{\sqrt{2} }{2}$

8. $\frac{\sqrt{2} }{2}$

Step-by-step explanation:

angles in a triangle equal 180 degrees. it is a right angle triangle so one angle is 90 degrees. both the other two are 45 each

5. cos(d)=cos(45)

7. sin(f)=sin(45)

8.cos(f)=cos(45)

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The diagram shows the width and area of a rectangle.

Mademuasel [1]

Answer:

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Step-by-step explanation:

8 0

2 years ago

Solve the system of linear equations using elimination.<br> -5x + 3y = -19<br> -x – 3y = -11

coldgirl [10]

3z=5.-x3y-z=-3.2x=6 there you go

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2 years ago

Read 2 more answers

Solve for x in the diagram

Aliun [14]

Answer:

x=12

Step-by-step explanation:

The two angles shown are complementary angles, so the add to 90 degrees

x+42 + 3x = 90

Combine like terms

4x+42 = 90

Subtract 42 from each side

4x+42-42 = 90-42

4x = 48

Divide by 4

4x/4 = 48/4

x = 12

4 0

3 years ago

A project being analyzed by PERT has 38 activities, 16 of which are on the critical path. If the estimated time along the critic

dolphi86 [110]

Answer:

required probability is .3446

Step-by-step explanation:

It is given that most expected time of completion = 90 days

Variance = 25

We know that

$\sigma =\sqrt{Variance}\\\\\sigma =\sqrt{25}\\\sigma =5$

Thus the standard normal deviate is given by

$Z=\frac{X-\bar{X}}{\sigma }$

Applying values we get

$Z=\frac{88-90}{5}\\\\Z=-0.4$

Using the standard table for Z we have probability corresponding to Z = -0.4 equals 0.3446

Thus required probability is .3446

3 0

2 years ago

There are 160 boys and girls 0laying in a soccer tournament. 32 of them were where orange. What percent of the players are weari

Vesnalui [34]

Answer:

20%

Step-by-step explanation:

You write 32/160 and simplify it. Then when your finished simplifying, you should get 1/5. 1/5, as you should all know, is also equivalent to 20%. Because 1/5 is 20% of 100.

3 0

2 years ago