MATHEMATICS MIDDLE SCHOOL

Given AABC. m LA= 39°
MLB=104°
AC= 20cm
mLC=
AB =
CB -

Answers

Answer 1

Answer:

Answer:

∠C = 37° ,

AB = 26.54 cm ,

BC= 33.27 cm

Step-by-step explanation:

Given that in triangle ABC

∠A = 39° AC = 20 cm

∠B = 104°

∵ sum of all the three angles of triangle = 180°

So, ∠C = 180° - ( ∠A + ∠B)

∠C = 180° - (39° + 104°)

∠C = 37°

Now Tan 37° = $(AC)/(AB)$

Or, AB = $(20)/(tan 37°)$

So, AB = 26.54 cm

Again, Sin 37° = $(AC)/(BC)$

So, BC = $(20)/(sin 37°)$

Or, BC = $(20)/(0.601)$

∴ BC= 33.27 cm

Hence ∠C = 37° , AB = 26.54 cm , BC= 33.27 cm Answer

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A radar gun measured the speed of a baseball at 103 miles per hour. If the baseball was actually going 102.8 miles per hour, what was the percent error in this measurement?

Answers

Answer:

The percent error in this measurement is 0.194%.

Step-by-step explanation:

Given : A radar gun measured the speed of a baseball at 103 miles per hour. If the baseball was actually going 102.8 miles per hour.

To find : What was the percent error in this measurement?

Solution :

The actual speed is 103 miles per hour.

The estimated speed is 102.8 miles per hour.

The percentage is given by,

$\text{Percentage}=\frac{\text{Actual-Estimated}}{\text{Actual}}* 100$

$\text{Percentage}=(103-102.8)/(102.8)* 100$

$\text{Percentage}=(0.2)/(102.8)* 100$

$\text{Percentage}=0.194\%$

Therefore, the percent error in this measurement is 0.194%.

Answer:

0.924

Step-by-step explanation:

Hope this helps you and have a great day

jake set up a study schedule the plan called for him to study 1/4 hour 5/8 hour and 1 hour on Monday Tuesday and Wednesday in that order. if he continues with his pattern how long will he study friday

Answers

I think it is 1 7/8 since 1/4 plus 5/8 plus 1 equals 1 7/8

The area of the parallelogram below is ____ square meters.A parallelogram with height labeled with 7 meters. The top horizontal side is labeled 9 meters. The base of the left triangle formed by the height is 2 meters.

Answers

51 square meters because if you divide the parallelogram into a triangle and a rectangle it would be 7 times 7 plus 2 times (2×.5) which is 49 plus 2

Answer:

i think its 63

Step-by-step explanation:

IDK if 51 is the answer because i did this problem lots of times and got 63. then i even had my dad do it whos really good at math and he still got 63

Is 4/16;0.25 equivalent numbers

Answers

Yes, because 4/16 is equal to 1/4 and 1/4 is equal to 0.25

4/16=1/4
0.25=1/4
THESE ARE EQUIVALENT!!!!!!!!
Hope this helps!!! :D

What percent of 4 hours is 8 seconds?

Answers

Answer:

0.055% of 4 hours is 8 seconds.

Step-by-step explanation:

Use conversion:

1 hour = 3600 seconds

We have to find the percent of 4 hours to 8 seconds.

4 hours = 14400 seconds

then;

$\text{Percent} = (8)/(14400) * 100 \approx 0.055\%$

Therefore, 0.055 percent of 4 hours is 8 seconds.

so 4 hours
1 hour=60 minutes
1 minute=60 seconds
1 hour=60 times 60 seconds=3600seconds
4 hours=3600 seconds times 4=14400seconds

so 8 out of 14400
8/14400=2/3600=1/1800
percent means parts out of100 so
x%=x/100
the reatios are equal to
1/1800=x/100
mulitply both sides by 100
100/1800=x
1/18=x
divide out
0.055555555=x
round
0.06%

Tickets to a museum cost $17 each. For a field trip, the museum offers a $4 discount on each ticket. How much will tickets for 32 students cost?