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2 years ago

The following data indicate the scores of some students in a competition:

2 answers:

7 0

Answer: The correct choice is the third choice.

First, lets look at the whiskers. They go out to the minimum and maximum. Our whiskers will need to go out to 11 and 32.

Second, lets look at the box. The range of the box is from 14 to 31 because those are the lower and upper quartile.

Finally, the middle line of the box is the median. In our case the median is 23.

These three facts lead us to chose the third option.

Elenna [48]2 years ago

6 0

Answer:The answer is c

Step-by-step explanation:

You might be interested in

9 inches of ribbon are needed for wrapping each present. How many presents can be wrapped with 6 yards of ribbon?

netineya [11]

Answer:

a total of 24 presents can be wrapped

Step-by-step explanation:

6 x 3 = 18 feet of ribbon

18 x 12 = 216 inches of ribbon

216/9 = 24 presents can be wrapped

3 0

2 years ago

The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is increasing at a rate of 2 cm^2/

VARVARA [1.3K]

Answer:

The base is decreasing at 2 cm/min.

Step-by-step explanation:

The area (A) of a triangle is given by:

$A = \frac{1}{2}bh$ (1)

Where:

b: is the base

h: is the altitude = 10 cm

If we take the derivative of equation (1) as a function of time we have:

$\frac{dA}{dt} = \frac{1}{2}(\frac{db}{dt}h + \frac{dh}{dt}b)$

We can find the base by solving equation (1) for b:

$b = \frac{2A}{h} = \frac{2*120 cm^{2}}{10 cm} = 24 cm$

Now, having that dh/dt = 1 cm/min, dA/dt = 2 cm²/min we can find db/dt:

$2 cm^{2}/min = \frac{1}{2}(\frac{db}{dt}*10 cm + 1 cm/min*24 cm)$

$\frac{db}{dt} = \frac{2*2 cm^{2}/min - 1 cm/min*24 cm}{10 cm} = -2 cm/min$

Therefore, the base is decreasing at 2 cm/min.

I hope it helps you!

7 0

2 years ago

If the measure of angle a is 112 the measure of angle b is 112. True or false.

den301095 [7]

Answer:

False

Step-by-step explanation:

Angles a and b add to 180° (linear pair), so angle b is 68°.

7 0

1 year ago

I need help solving #9 & #11! It's geometry but I'm just really stuck<br><br>

Vikentia [17]

Answer:

9)x=11 y=3

11)x=18 y=5

Step-by-step explanation:

9) 9x+25=13x+19 13x-19+17y+5=180

9x+44=13x 129+17y=180

44=4x 17y=51

11=x y=3

11) 49+3x=7x-23 3x=11y-1

7 0

2 years ago

A plant that manufactures metal plates has a quality control team to check that the plates are the right size. A rectangular pla

Kamila [148]

Answer:

Given the size of rectangular plate in advertisement = 5 cm by 3cm.

Given the condition for length should be = 0.25 of 5 cm

Step-by-step explanation:

Now, have to write the inequality from the given data.

Therefore, 5- 0.25 ≤ L ≤ 5+.25

4.75 ≤ L ≤ 5.25

We know that the area of a rectangle = Length × Width.

Width = 3

Thus, the area is 3 × L

3× (4.75) ≤ 3×L ≤3× (5.25)

14.25 ≤ 3×L ≤ 15.75

So the minimum area is 14.25 cm^2

The maximum area is 15.75 cm^2

4 0

2 years ago