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3 years ago

PLEASE HELP ME ASAP!!!!!!!!!!!!

Mathematics

2 answers:

serious [3.7K]3 years ago

8 0

Answer:

a) score 2 and 3.

b) 30 rounds

Step-by-step explanation:

a) score 2 and 3 have same number of frequency which is 7 times, meaning that there are 7 persons get score 3 and 2 respectively.

b) frequency of number of score are 30 times, which means 30 rounds.

score 1: 3 times,

score 2: 7 times,

score 3: 7 times,

score 4: 8 times,

score 5: 5 times.

alina1380 [7]3 years ago

4 0

Answer:

a and b is the answer

the previous answer is a good answer

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HI PLS HURRY !!

VARVARA [1.3K]

Step-by-step explanation:

234751

100% sure

Goood luck.

5 0

3 years ago

5/6 = 1/3+d and x/x is a fraction

Alik [6]

$\dfrac{1}{3}+d=\dfrac{5}{6}\qquad|-\dfrac{1}{3}\\\\d=\dfrac{5}{6}-\dfrac{1}{3}\\\\d=\dfrac{5}{6}-\dfrac{1\cdot2}{3\cdot2}\\\\d=\dfrac{5}{6}-\dfrac{2}{6}\\\\d=\dfrac{5-2}{6}\\\\d=\dfrac{3}{6}\\\\d=\dfrac{3:3}{6:3}\\\\\boxed{d=\dfrac{1}{2}}$

7 0

3 years ago

Two cars simultaneously left Points A and B and headed towards each other, and met after 2 hours and 45 minutes. The distance be

Oksana_A [137]

<h2>Hello!</h2>

The answers are:

$FirstCarSpeed=41mph\\SecondCarSpeed=55mph$

To calculate the speed of the cars, we need to write two equations, one for each car, in order to create a relation between the two speeds and be able to calculate one in function of the other.

So,

Tet be the first car speed "x" and the second car speed "y", writing the equations we have:

For the first car:

$x_{FirstCar}=x_o+v*t$

For the second car:

We know that the speed of the second car is the speed of the first car plus 14 mph, so:

$x_{SecondCar}=x_o+(v+14mph)*t$

Now, from the statement that both cars met after 2 hours and 45 minutes, and the distance between to cover (between A and B) is 264 miles, so, we can calculate the relative speed between them:

If the cars are moving towards each other the relative speed will be:

$RelativeSpeed=FirstCarSpeed-(-SecondCarspeed)\\\\RelativeSpeed=x-(-x-14mph)=2x+14mph$

Then, since we know that they covered a combined distance equal to 264 miles in 2 hours + 45 minutes, we have:

$2hours+45minutes=120minutes+45minutes=165minutes\\\\\frac{165minutes*1hour}{60minutes}=2.75hours$

Writing the equation:

$264miles=(2x+14mph)*t\\\\264miles=(2x+14mph)*2.75hours\\\\2x+14mph=\frac{264miles}{2.75hours}\\\\2x=96mph-14mph\\\\x=\frac{82mph}{2}=41mph$

So, the speed of the first car is equal to 41 mph.

Now, for the second car we have that:

$SecondCarSpeed=FirstCarSpeed+14mph\\\\SecondCarSpeed=41mph+14mph=55mph$

We have that the speed of the second car is equal to 55 mph.

Hence, the answers are:

$FirstCarSpeed=41mph\\SecondCarSpeed=55mph$

Have a nice day!

7 0

3 years ago

Mike can stitch 7 shirts in 42 hours how long will it take to stitch 1 shirt

Alex_Xolod [135]

Answer:

42/7 is 6 so it would take Mike 6 hours to stich 1 shirt please give brainliest

Step-by-step explanation:

5 0

3 years ago

Given that lines b and c are parallel, select all that apply.

dangina [55]

Answer:

Angles 7, 2, and 6

Step-by-step explanation:

Angle 7 is congruent by corresponding angles to angle 3.

Angle 2 is congruent by vertical angles to angle 3.

Angle 6 is congruent by vertical angles to angle 7, which is congruent to angle 3, so angle 3 and angle 6 must also be congruent.

4 0

2 years ago