MATHEMATICS MIDDLE SCHOOL

(3 1/2 - 9 3/4) divided by (-2.5)

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

Let's take the numerator first

3 1/2 - 9 3/4

Convert to improper fraction

7/2 - 39/4

Find the LCM

$(14 - 39)/(4)$

= -25/4

Now let's take the denominator

-2.5

Convert to fraction

-5/2

Combine the two parts of the fraction

-25/4 / (-5/2)

This becomes;

-25/2 * -2/5

= +5

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Is this inequality correct or incorrect?1.5 ≤ 0.5
you buy two rolls of wrapping paper. each roll has the same lateral surface area. what is the diameter of roll B?
To the nearest cent what is $89.95 DVD player 5% discount
What is the equation parallel to y= -1/5x + 3 and goes through the point (7,4)? Please show steps.
A number squared added to 16

A student researcher wishes to examine the effectiveness of a statisticalwork laboratory on graduate students' overall understanding of application of
statistical analyses. The researcher administers a survey to 15 students who
are seated at the front of the laboratory. How could this study be improved?
Select all that apply.
A. Use an instrument to test statistical analysis understanding.
B. Select a random sample of students who go to the work
laboratory
c. Use a larger sample size.
D. Administer instruments to a group who does not go to the work
laboratory, as well.

Answers

Answer:

B. Select a random sample of students who go to the work laboratory

Step-by-step explanation:

The best way to get acurate results is by selecting a random sample of students. If the students administers a survey to the students that are seated at the front of the laboratory he could get biased results.

The students that are seated in fron of the laboratory could obey to a certain characteristic (ie. They could be very applied students), which could definitely provide us with a different result.

The survey is just fine. We don't need any instrument to test statistical analysis understanding. Also, using a larger sample size of students seated in front of the laboratory won't make much difference. Finally, Administering instruments to a group who does not go to the work laboratory makes no sense. You can not measure effectiveness on people that don't assist to class.

Answer:

Select a random sample of students who go to the work laboratory

verified on a p e x

0.2(x+50)-6=0.4(3x+20)

Answers

0.2(x+50)-6=0.4(3x+20) so like here Let's solve your equation step-by-step.0.2(x+50)−6=0.4(3x+20)Step 1: Simplify both sides of the equation.0.2x+4=1.2x+8Step 2: Subtract 1.2x from both sides.0.2x+4−1.2x=1.2x+8−1.2x−x+4=8 Step 3: Subtract 4 from both sides.−x+4−4=8−4 −x=4 your answer is x=-4 because you divide by a negative 1

Write two expressions where the solution is 41.

Answers

31 +10
21 + 20
23 + 18

21+20
31+10
just add 21 and 20
and just add 31 and 10 and youll have your 2 expressions

Mira has breakfast at a restaurant.She leaves a 20%tip of $1.80. What is the price of Mira’s breakfast,before tip?

Answers

Answer:

Step-by-step explanation:

20% goes into a 100 5 times, multiply 1.80 *5 to get 9, this is how i got my answer

hope it helps :)

Skeeter the wonder dog jumps through circular rings as part of his dog show exhibition.skeeter requires a width of 18inches for his costume to clear the ring.Will a ring with an inner circumference of 39.8 inches be large enough for Skeeter's act ?

Answers

no bc the width of the circular ring is only 12.67 inches

knowing circumference = pi * diameter, we can make the formula:

39.8 = (3.14)(diameter)
divide 39.8 by 3.15

diameter = 12.67 inches

12.67 inches is not greater than or equal to 18 inches

What are a functions zeros?

Answers

They are the values of 'x' that make the function zero.

If you graph the function, they are the values of 'x' where the graph
crosses the x-axis.

$the\ argument\ x\, for\ which\ the\ value\ y\ of\ the\ function\ is\ zero\n\ne.g.\ny=2x-6\ \ \ \Rightarrow\ \ \ the\ zeros\ of\ a\ function\ is\ x=3\n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (y=2\cdot3-6=6-6=0)\n\ny=x^2+8x\ \ \ \Rightarrow\ \ \ the\ zeros\ of\ a\ function\ are\ x=0\ \ \ or\ \ \ x=-8\n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (y_1=0^2+8\cdot0=0;\ y_2=(-8)^2+8\cdot(-8)=64-64)$

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Tony has a bucket filled with 10 green, 3 blue, 1 red, and 7 yellow tennis balls. Heremoves 9 tennis balls from the bucket, without replacement.Which of the following outcomes could represent the tennis balls that he selects? (MULTISELECT)A. All of the tennis balls are blue. B. There is 1 tennis ball of each color.C. There are 3 green tennis balls.D. There are more red tennis balls removed than other colors.E. The number of red tennis balls is the same as the number of blue tennis balls.help

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