How many bags of topsoil does Betsy need to cover her flower bed?

You can tell if 3 side lengths will form a triangle if you know each length by adding all 3 side lengths together. If they equal a total of 180 degrees then it is a triangle.

Answer:

Step-by-step explanation:

the correct expression is B

13*n+20

where n represents the number of the books

Answer:

y = 23

x = -4.5

Step-by-step explanation:

Given:

Equation

8x + y = -13 ......eq1

8x + 2y = 10​........eq2

Find:

Solution

Computation:

Eq2 - Eq1

y = 23

From eq1

8x + y = -13

8x + 23 = -13

8x = -36

x = -4.5

Answer:

9.42

Step-by-step explanation:

Hey There!

The first step of this problem is to find the formula for arc length

[tex]arc-length=2\pi r(\frac{0}{360} )[/tex]

r=raduis

0 = angle

now we just plug in the values

[tex]arc-length=2\pi 10\frac{54}{360} \\2\pi =6.283185307\\6.283185307x10=62.83185307\\62.83185307\frac{54}{360}=9.424777961[/tex]

so the arc length equals 9.424777961

the last step is to round to the nearest hundreth

so your final answer is 9.42

mn + m + n + 1

m(n +1) + (n+1)

( n + 1) ( m + 1)

x (y+ z) -5 (y + z)

( y + z ) ( x- 5 )

Answer:

6x + 7.50y ≥ 75

Step-by-step explanation:

Let x = # of hours he walks the dog

     y = # of hours he washes cars

We also know that he cannot have any negative hours, so 2 lines that we need to graph will be y = 0, with everything above this line shaded in, and x = 0, with everything to the right of this line shaded in and these lines will be solid because you can have 0 hours.

Another equation will be x + y ≤ 15. We graph the line, which will be solid, y = -x + 15, and shade everything to the left of this line.

The last equation will be 6x + 7.50y ≥ 75. We graph this solid line, y ≥ (-6x + 75)/7.50 & shade everything to the right of this line. Any point inside the area shaded in by all 4 equations will be an answer. I'll leave this up to you.

Hope this helps!

9514 1404 393

Answer:

Step-by-step explanation:

Let b represent the base of the triangle in meters. Then the height is ...

  h = 3 +2b

and the area is ...

  A = 1/2bh

  8 = 1/2(b)(3 +2b)

  16 = 3b +2b^2 . . . . . . . multiply by 2 and eliminate parentheses

  2(b^2 +3/2b + (9/16)) = 16 + 9/8 . . . . . . complete the square

  2(b +3/4)^2 = 17.125

  (b +3/4)^2 = 8.5625 . . . . . divide by 2

  b + 0.75 = √8.5625 ≈ 2.9262

  b = -0.75 +2.9262 = 2.1762

  h = 3 +2b = 7.3523

The base is about 2.18 meters and the height is about 7.35 meters.

Answer:

-27

Step-by-step explanation:

8(-3)-3

-24-3

-27

hope this helps

Answer:

− 27

Step-by-step explanation:

Use the given functions to set up and simplify  f ( − 3 ) .

Answer:

The answer is B

Step-by-step explanation:

if correct plz mark brainliest and tell me if its wrong

Answer:

The correct answer is C. 160 minutes.

Step-by-step explanation:

Since Tammy has begun an exercise program, and she worked out five days the first week for 28 minutes, 32 minutes, 21 minutes, 38 minutes and 42 minutes, to find an estimate of the total number of minutes Tammy exercised during the week, rounding each figure to the nearest tenth, the following calculation must be performed:

28 + 32 + 21 + 38 + 42 = X

30 + 30 + 20 + 40 + 40 = X

160 = X

Thus, the estimated time of exercise that Tammy performed was 160 minutes.

Answer:

2nd table

Step-by-step explanation:

Answer:

810 x 1/9 = 90

?= 810

Step-by-step explanation:

Answer:

the answer is 360

Step-by-step explanation:

1. Simplify the 1/4

2 write the whole as a fraction using  4  as the denominator :

              90          90 • 4

   90 =  ——  =  ——————

         1                       4  

3.  Do the multiplication 90x 4 = 360

x- 360

----------

4        

then do 0 * 4 to get the denominator

Answer:

1504

Step-by-step explanation:

3472-1968=1504

CHECK

1968+1504=3472

Answer:

Find sin 2x, knowing tan x = -2, and cos x > 0

Ans:

sin

2

x

=

4

5

Explanation:

3 Trig identities to be used:

1

+

tan

2

x

=

1

cos

2

x

(1)

sin

2

x

+

cos

2

x

=

1

(2)

sin

2

x

=

2

sin

x

.

cos

x

(3)

Given tan x = -2. First find cos x and sin x

(1) -->

1

+

4

=

1

cos

2

x

-->

cos

2

x

=

1

5

-->

cos

x

=

±

1

√

5

.

Since cos x > 0, then

cos

x

=

1

√

5

.

(2) -->

sin

2

x

=

1

−

cos

2

x

=

1

−

1

5

=

4

5

-->

sin

x

=

±

2

√

5

.

Since cos x > 0 then

sin

x

=

2

√

5

.

(3) -->

sin

2

x

=

2

sin

x

.

cos

x

=

2

(

1

√

5

)

(

2

√

5

)

=

4

5

Answer link

Answer:

x= 43, y=215

Step-by-step explanation:

Let one number be x,

Let the other number be y.

x= 5y

x - y= 172

Putting value of x in equation 2.

5y - y = 172

4y = 172

y= 172/4

y= 43

Putting value of y in eq. 1

x= 5(43)

x=215.

Answer:

-6,-2

Step-by-step explanation:

you just have to look i think its right

Answer:

NICE

Step-by-step explanation:

Answer:

m^2 -121

m^2 - 11^2

( m - 11 ) ( m + 11 )

6x^2 - 54

6 ( x^2 - 9 )

6 ( x - 3 ) (x + 3 )

Answer:

m^2-121

m^2-11^2

(m-11)(m+11)

Step-by-step explanation:

6×^2-54

6(×2^-9)

6(×-3)(×+3)

Answer:

There may not be an image representation of this question but I can probably answer this. If the smaller wheel causes the the bigger wheel to rotate, the wheel will rotate 30.0° about everytime. this only depends on the speed of the smaller wheel.

Step-by-step explanation:

Tiled floor with 225 square tiles means the area of the square room is 225.

Formula needed: A = (side)^2 or in short

A = s^2.

We need to find s.

225 = r^2

sqrt{225} = sqrt{r^2}

15 = r

There are 15 tiles are along an edge of the room.

Answer:

clerk A and clerk B can simultaneously stock a shelf in 180/13 minutes

Step-by-step explanation:

Let the first clerk be A and the second clerk be B

A can stock a shelf in 20 min

B can stock a shelf in 45 min

Consider the complete work to be W

A’s rate of stocking =  per minute

B’s rate of stocking =  per minute

When, A and B work simultaneously, rate of work done =

Total work done simulatenously =  180/13

Therefore, clerk A and clerk B can simultaneously stock a shelf in 180/13  minutes

Answer:

Step-by-step explanation:

The rate of each clerk is 1/25 and 1/45 respectively so together they can stock the shelf

t/25+t/45=1 (the least common multiple of 25 and 45 is 225)

t/25(9/9)+t/45(5/5)=1

(9t+5t)/225=1

9t+5t=225

14t=225

t=225/14 min

t=16 minutes (rounded to nearest minute)

( or 16 minutes and about four seconds :) )

Answer:

30

Step-by-step explanation:

Again there are TWO sides so it would be 50% chance of getting head, or 50% of getting tail. So it would probably be 30

Answer:

"50% of the time"

Step-by-step explanation:

Because the probability is limited to only 2 sides you have a 50% chance it will land on either heads, or tails.

Answer:

0.7727 = 77.27% probability that it is small or green

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question:

11 large + 11 small = 22 total marbles = 22 total outcomes

11 small marbles  + 6 green large marbles = 17 desired outcomes.

What is the probability that it is small or green?

[tex]p = \frac{17}{22} = 0.7727[/tex]

0.7727 = 77.27% probability that it is small or green

Answer:

60x=y

Step-by-step explanation:

math

Answer: Tyrone is body built so you can assume he takes very big steps so i'll say about 69 inches

Step-by-step explanation: The math is common sense

Answer:

Step-by-step explanation:

The area is the height times the average of the parallel bases.

A=h(b1+b2)/2

A=4(2+4)/2

A=4(6)/2

A=24/2

A=12

The area is 12 square units.