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3 years ago

Help please im begging i dont wanna fail

Mathematics

2 answers:

sweet-ann [11.9K]3 years ago

7 0

Answer:

3/5

Step-by-step explanation:

The total of all books is 1.

For Fiction to be 3 times more than Biographies.

Biographies have to have same probability to be chosen as poetry.

So to solve for the probability to choose Fiction is 3 × 1/5 = 3/5

The number of fiction books is solved with 10 × 3/5 = 6

sasho [114]3 years ago

6 0

6 and 3/5 as your answer

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Richard s kitchen floor measures 22 ft by 16ft. He plans on laying title down and each tile piece measures 16 inches by 16 inche

olya-2409 [2.1K]

We calculate the floor area of the kitchen:
A = (22) * (16)
A = 352 feet ^ 2
We consider the following conversion:
1 foot = 12 inches.
Applying the conversion we have:
A = 352 * (12/1) ^ 2
A = 50688 in ^ 2
We calculate the area of each tile:
A = (16) * (16)
A = 256 in ^ 2
Then, the number of tiles is given by:
N = (50688) / (256)
N = 198
Answer:
He needs to buy 198 tiles

3 0

3 years ago

Please anwser im having the hardest time on this picture

Free_Kalibri [48]

What you do first is add the books 42 + 85 + 69 which equals 196. Then divide 196 by 7 and you get 28 :)

3 0

4 years ago

Read 2 more answers

Which point lies on the circle represented by the equation (x+5) + (y-9) = 8

olga_2 [115]

Answer:

(-5,9+√8)

Step-by-step explanation:

There are two ways in which you can find a point that lies in the circle. One of them is to do y the subject of the formula, and another one is to determine the center of the circumference, and with the information of the radius, you can sum this value upward or downward.

the general equation of a circle is:

$(x-h)^2+(y-k)^2=r^2$

with center at (h,k)

you have the following equation:

$(x+5)^2+(y-9)^2=8\\\\h=-5\\\\k=9\\\\r=\sqrt{8}$

Then, the center is (-5,9)

if you sum the value of the radius in one of the fourth directions (up, down, left, right), for example upward you have

$(-5,9+r)=(-5,9+\sqrt{8})$

Then, one point that lies in the circle is (-5,9+√8)

3 0

3 years ago

PLEASE HELP! which answer is correct??

Solnce55 [7]

Option( c ) is the correct one.
-2x +y= -3
x= (3+y)/2
By executing the value in second equation
{-(3+y)/2} +2y =3
( -3-y +4y)/2 =3
-3 +3y =6
3y = 9
y = 3
Again by substituting the value of y in any of the equation
-2x +y =-3
-2x =-6
x= 3.

7 0

3 years ago

Solve by elimination <br> X - 6y + 2z = 5<br> 2x-3y+z=4<br> 3x + 4y - z = -2

Vesnalui [34]

Answer:

x=1

y=-3

z=-7

Step-by-step explanation:

6 0

3 years ago