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scoray [572]
3 years ago
13

What is the ninth triangular number?

Mathematics
1 answer:
earnstyle [38]3 years ago
5 0
27 I think..... Oh darn I'm replying to my self
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One teacher wants to give each student 2/3 of a slice of pizza . If the teacher has 4 slices of pizza how many students will rec
Deffense [45]

Answer: 6 students

Step-by-step explanation:

The teacher wants to give each student 2/3 of a slice of pizza but only has 4 slices to give.

If each student gets 2/3 out of 4 slices, the number of students receiving will be:

= Slices / proportion per slice

= 4 / 2/3

= 4 * 3/2

= 12/2

= 6 students

5 0
3 years ago
Which term refers to a statistical value that is a measure of the spread or variation in the scores in a given data set?
IRINA_888 [86]

Answer:

A

Step-by-step explanation:

The dispersion refers to the overall spread of the data — how "disperse" it is across values.

The independent variable is what you manipulate in a study, whereas the dependent variable is what you measure.

Central tendency is another word for average.

6 0
3 years ago
There are 63 students marching in a band, and they’re marching in 7 rows. How many students are in each row?
steposvetlana [31]
Total divided by number of rows=number per row
63/7=9
9 per row
3 0
3 years ago
Read 2 more answers
A rectangular parking lot is 75 feet wide and 150 feet long. The owner wants to increase the width by 100 feet. What is the appr
Trava [24]

The <em>approximate increase</em> in Area of the parking lot is about 133%

Area of a rectangle = Length × width

<u>Initial Area of parking lot</u> :

  • 75 feets × 150 feets = 11250 ft²

<u>New Area of parking lot</u> :

Width = 75 + 100 = 175 feets

Length = 150 feets

Area = 175 × 150 = 26250 ft²

<u>Percentage increase in </u><u>Area</u><u> </u><u>of lot</u> :

((16250 - 11250) / initial Area) × 100%

(15000 / 11250) × 100% = 133.33%

Therefore, the <em>approximate increase</em> on area of lot is 133%

Learn more : brainly.com/question/18109354

5 0
3 years ago
A rectangle with an area of 47 m² is dilated by a factor of 7. What is the area of the dilated rectangle? Do not leave your answ
PolarNik [594]
Area of rectangle = lb = 47 m^2

Dilation by a factor of 7 results in 1/7 l x 1/7 b = 1/49 lb = 1/49 (47) = 47/49 = 0.9592
8 0
3 years ago
Read 2 more answers
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