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Nuetrik [128]
3 years ago
7

Need help please!! 15 points

Mathematics
2 answers:
marusya05 [52]3 years ago
8 0

Answer:

The average of -2.5, 5.2, 1.7, and -0.8 is <u>0.9</u>

Step-by-step explanation:

You are taking the mean of all the values

So you would add -2.5, 5.2, 1.7, and -0.8 all together

This gives you 3.6

Then you would divide by the number of numbers per se,

Which would give you the answer: 0.9

katrin [286]3 years ago
8 0
Add them up then divide by 4 and you’ll get 0.9
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3x-7&gt;8 and -3x ≥-36 solve the inequality
tamaranim1 [39]

Good evening,

Answer:

x > 5

x ≤ 12

Step-by-step explanation:

Visualize as if the inequality symbols are equal signs and then solve it as you would for a normal equation, note if you divide by two negative numbers at all you then switch the sign.

On a number line, an inequality sign without the “equal to” is plotted with an open circe.

An inequality sign, with the “equal to” is plotted with a closed circle.

3x - 7> 8

Add seven on both sides, we do this because we want to eliminate the 7 from one side.

3x > 15

Divide both sides by 3, we do this because you want to get rid of the 3 from x.

x > 5

As for the second inequality.

Divide both sides by -3, as I mentioned earlier switch the side since we are dividing by two negative numbers.

x ≤ 12

For the greater than inequality x > 5, plot a open circle on 5 and draw the line going to the right.

For the less than or equal to inequality x ≤ 12, plot a closed cirlce on 12 and draw the line going to the left.

A unique trick is to graph the line based on the direction (right or left) the inequality symbol is pointing to.

7 0
3 years ago
it taken 12 days for 10 men assemble a machine how long could it take for 15 men to assemble the machine?​
fenix001 [56]
It will take 17 men to assemble a machine
8 0
3 years ago
In the diagram below of triangle ABC, the medians meet at point G. If CF = 39, what is the length of CG?
LenKa [72]

Applying the centroid theorem of a triangle, the length of CG is: 26.

<em><u>Recall:</u></em>

  • Medians join the vertices to the midpoint of the opposite sides of a triangle.
  • The center that all the three medians intersect at is called the centroid.
  • Based on the centroid theorem, the distant from the centroid to the vertex = 2/3 of the median length.

Triangle ABC is shown in the image attached below. G is the centroid.

CF = 39 (median)

CG = 2/3(CF) ---> Centroid Theorem.

  • Substitute

CG = 2/3(39)

CG = 26

Therefore, applying the centroid theorem of a triangle, the length of CG is: 26.

Learn more about centroid theorem on:

brainly.com/question/20627009

5 0
2 years ago
3.75x = 3<br> how to do this, please help.
Travka [436]

Answer:

0.8

Step-by-step explanation:

you divide both sides by 3.75 (because its multiplied) so the 3.75 connected to the x cancels out and your left with x on the left and 3 over 3.75 equals 0.8 so its x = 0.8

3 0
3 years ago
Read 2 more answers
Plz help fast<br><br><br><br><br><br> Thank you
Ivahew [28]
B. 16.. because its in the middle
3 0
3 years ago
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