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3 years ago

5

How can you determine if a number is a rational number?

1 answer:

FinnZ [79.3K]3 years ago

8 0

A rational number is a number that can be written as a ratio. That means that it can be written as a fraction. The numerator and the denominator both need to be whole numbers for it to be rational. For example, 2 is a rational number because it can be written as the fraction 2/1.

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the figure is made up of a semicircle and a triangle. Find the area of the figure. Use pi equals 3.14

valentinak56 [21]

Answer:

The area of the figure is 63.25 square feet

Step-by-step explanation:

we know that

The area of the figure is equal to the area of semicircle plus the area of triangle

step 1

Find the area of semicircle

The area of semicircle is

$A_1=\frac{1}{2}\pi r^{2}$

we have

$r=10/2=5\ ft$ ----> the radius is half the diameter

$\pi =3.14$

substitute

$A_1=\frac{1}{2}(3.14)5^{2}$

$A_1=39.25\ ft^2$

step 2

Find the area of the triangle

The area of triangle is equal to

$A_2=\frac{1}{2}bh$

we have

$b=8\ ft\\h=6\ ft$

substitute

$A_2=\frac{1}{2}(8)(6)$

$A_2=24\ ft^2$

step 3

The area of the figure is equal to

$A=A_1+A_2$

substitute

$A=39.25+24=63.25\ ft^2$

5 0

3 years ago

??math question?? graph

frutty [35]

The slope is $\frac{5}{2}$ and the y intercept is -1
so the equation is y = $\frac{5}{2}$ x-1

4 0

3 years ago

Read 2 more answers

Pls provide the steps , brainliest to whoever gets it right .

Salsk061 [2.6K]

Times the two radicals together

So it's:

8*sqrt 15*5 (find common numbers between 5 and 15 which is 5)

8*sqrt(5^2*3)

8*5 sqrt3

40 sqrt 3

Hope this helped :)

4 0

2 years ago

An ice cream shop sells large cones for $2.50 and small cones for $1.50. Jack has enough money to buy 21 large cones. How many s

Strike441 [17]

Answer:

35 cones

Step-by-step explanation:

21 x $2.50

=52.5

52.5/$1.50

= 35 small cones he can buy

6 0

3 years ago

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An office needs 300 envelopes. If there are 30 envelopes in each box, how many boxes should the office buy?

Mila [183]

Answer:

they should buy 10 boxes

Step-by-step explanation:

300/30 = 10

7 0

3 years ago

Read 2 more answers