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adoni [48]
3 years ago
8

Is -12.75 a rational,real or whole,rational or natural, whole

Mathematics
2 answers:
ss7ja [257]3 years ago
6 0

integer

Answer:

integer,rational

Step-by-step explanation:

google give examples for these problems

frez [133]3 years ago
4 0
Rational I think is the answer
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Find the slope of the lines joining each of the following pair of points.<br> (1,7) and (4,2)
Damm [24]

Answer:

-5/3

Step-by-step explanation:

We can find the slope using the slope formula

m = ( y2-y1)/(x2-x1)

  = ( 2-7)/(4-1)

  -5/3

8 0
3 years ago
What are the measurements of the sides of a pentagon that has the area of 32?
LenaWriter [7]

Answer:

4.31 units

Step-by-step explanation:

A pentagon is a polygon with five straight sides.

The formula to apply here will be finding area from side length, assuming that this is  a regular pentagon with five sides of equal length.

Lets take each side length to be x units

Divide the pentagon into five triangles by joining a line from the center to any vertex of the pentagon.

Now you have five equal triangle.Take the base triangle and divide it into two(take a line from center of pentagon to hit the base at 90°)

This will divide the base triangle of length x unit into two equal triangles with base length x/2 units.

The angle at the pentagon center for the small formed triangle will be 36°. Here you have a triangle with base x/2 units and angle 36° at top center.

To get the height of the triangle you apply formula for tangent of an angle;

height, h=0.5x /tan 36°

Find area of the small triangle;

Area=1/2 *b*h

where b is base length=0.5x and h is height = 0.5x/tan 36°

Area=1/2*0.5x * (0.5x /tan 36°) Area for one small triangle.

However, you notice that you will have 10 small triangles for the whole pentagon, hence multiply this area by 10 which should be equal to the area of the pentagon given 32.

32=1/2 * 0.5x *(0.5x /tan 36°) *10

32=1.25x² /tan 36°

32*0.7265=1.25x²

18.60=x²

√18.60=x

4.31=x

Measurement of one side is 4.31 units

3 0
3 years ago
A boy bought 9 new cards to add to his card collection of 25 cards. The next day his dog ate half of his collection. How many ca
lora16 [44]
This would equal (9+25)/2

Which could be simplified into 34/2

Which means the answer is 17
4 0
3 years ago
Dominic spent $8 on a book. He made $6 doing chores for a neighbor. What numbers represent the situations?
Katyanochek1 [597]

Answer:

-8 and 6

Step-by-step explanation:

he spent 8 on the book, therefore he had deduced 8 dollars, and earned 6, therefore he had increased 6 dollars

7 0
2 years ago
Read 2 more answers
Which expression is equivalent to 7(a+2) when a=6?<br> 7(6)<br> 9(6)<br> 7(6)+2<br> 7(6)+14
Pie

It is equivalent to 7(6) + 14

Step-by-step explanation:

  • Step 1: Solve 7(a + 2) when a = 6

⇒ 7 (6 + 2) = 7 × 8 = 56

  • Step 2: Find its equivalent

7(6) + 14 = 42 + 14 = 56

3 0
3 years ago
Read 2 more answers
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