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olga2289 [7]
2 years ago
8

Rachel has 15 markers. She gives 4 markers to

Mathematics
1 answer:
MA_775_DIABLO [31]2 years ago
7 0

The answer is 8 markers

Step-by-step explanation:

Since all children are collecting markers from Rachel who has 15 markers, the equation will be:

Markers Left = 15 - 4- 3

Markers Left = 11 - 3

Markers Left = 8

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Need help with a math question
Mekhanik [1.2K]

Answer:

z =3\sqrt{13}

Step-by-step explanation:

In the figure you can identify up to 3 straight triangles.

To solve the problem, write the Pythagorean theorem for each triangle.

<em>Triangle 1</em>

13^2 = z^2 + x^2

<em>Triangle 2</em>

z^2 = y^2 + 9^2

<em>Triangle 3</em>

x^2 = y^2 + 4^2

Now substitute equation 2 and equation 3 in equation 1 and solve for y.

13^2 = y^2 + 9^2 + y^2 + 4^2

13^2 = 2y^2 + 9^2 + 4^2

169 = 2y^2 + 81 + 16

2y^2 =72

y^2 =36

y =6

substitute the value of y in the second equation and solve for z

z^2 = 6^2 + 9^2

z^2 = 36 + 81

z^2 = 117

z = \sqrt{117}

z =3\sqrt{13}

5 0
3 years ago
Which of the following correctly sets up the synthetic division for x3 − 4x2 − 3 divided by x + 1?
Scrat [10]

Answer:

x3 − 4x2 − 3 divided by x + 1 = x4−4x3+x−3 over x

------------

Step-by-step explanation:

6 0
3 years ago
For questions 3-4, John plays in a summer softball league. He keeps track of the batting averages of
Mars2501 [29]

Considering the given data-set, we have that:

  • The lowest batting average is of 0.254.
  • On the histogram, 5 values would fall into the class 0.251 - 0.280.

<h3>What is an histogram?</h3>

An histogram is a graph that shows the number of times each element of x was observed, or the number of elements x in a range of values, as is used for this problem.

For the given 20 batting averages given in the table, we have that:

  • Looking at all of them, the lowest value of the table is of 0.254, hence the lowest batting average is of 0.254.
  • The measures in the table between 0.251 and 0.28 are: 0.277, 0.265, 0.267, 0.259, 0.254. Hence, this means that on the histogram, 5 values would fall into the class 0.251 - 0.280.

More can be learned about histograms at brainly.com/question/28164315

#SPJ1

4 0
1 year ago
Which of the following expressions represents the product of a number and eight"?
Andrej [43]
8x because everything else is addition or subtractionZ
6 0
3 years ago
Read 2 more answers
List the factor pairs of 15
icang [17]
1,15 3,5 are the only factor pairs
5 0
3 years ago
Read 2 more answers
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