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Hitman42 [59]
3 years ago
13

In a classroom of 33 students, the ratio of boys to girls is 3 : 8.

Mathematics
2 answers:
kirill [66]3 years ago
8 0

Answer:

the answer is 9 :)

Step-by-step explanation:

SCORPION-xisa [38]3 years ago
5 0

Answer: 9

Step-by-step explanation:

In a classroom of 33 students, the ratio of boys to girls is 3 : 8. With the ratio you can add both gender and get 11 divide 33 by 11 which is 3 so multiply both 3 and 8 by 3 which makes a ratio of. 9:24

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What is the slope of the line represented by the values in the table? x-10,2,3,7,20 and y-14,-2,0,8,34.
djyliett [7]
The slope of a line can be calculated as follows:

\dfrac{y_{1}-y_{2} }{x_{1}-x_{2}}

Plug in any two pairs of coordinates from the table, for instance:

\dfrac{14-(-2) }{10-2}

This simplifies to 2, therefore, the slope of the line is 2.
3 0
4 years ago
It takes Wayne 1/10 hours to walk a 1/6 mile park loop. What is Wayne's unit rate, in miles per hour
olchik [2.2K]
To solve this problem, we should set up a proportion, letting x represent our unknown number of miles that Wayne walks in one hour.

1/6 mile / 1/10 hours = x miles / 1 hour

Now we use cross-products or the multiplication of the numerator of one fraction times the denominator of the other fraction, setting these two numbers equal.  The resulting equation is:

1/6 = 1/10x

Finally, we must divide both sides by 1/10 to cancel it out on the right side of the equation and get the variable x alone.

x = 5/3 or 1 2/3

Therefore, Wayne walks 1 2/3 miles per hour.
5 0
3 years ago
Quadrilateral WXYZ has vertices W(-4,-3), X(0,-1). Y(6,-2), Z(2,-4). Using properties of diagonals prove that WXYZ is a parallel
yanalaym [24]

Answer:

The diagonals are bisectors of each other and meet at  (1, -5/2) but are not congruent, so WXYZ is a parallelogram and not a rectangle

Step-by-step explanation:

for parallelograms.

the diagonals intersect at the midpoints

W                             X

Z                             Y

Diagonals are  WY  and  XZ

WY :   (-4, -3) to  (6, -2)

midpoint is   [(-4 + 6)/2  ,  (-3 - 2)/2 ] = ( 1, -5/2 )

XZ :   (0, -1)  to  (2, -4)

midpoint is  [ (0 + 2)/2 ,  (-1 + -4)/2 ]  = (1, -5/2)

The diagonals are bisectors of eachother.

Next show that these diagonals are not congruent.

length of  WY  =  root (  (-4 - 6)^2  +  (-3 - (-2))^2 )

WY = root ( 100  +  1)

WY = root(101)

length of XZ  =  root (  (0 - 2)^2  +  ( -1 - -4)^2 )

XZ =  root (4  +  9) = root (13)

we see that  WY  is not equal to XZ

...

so  ..  quadrilateral WXYZ is a parallelogram but not a rectangle.

8 0
3 years ago
3(r-6)+2=4(r+2)-21 find the value of x and show steps
MAXImum [283]
 3(r-6) +2 = 4(r+2) -21
3r - 6r +2 = 4r +8 -21
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            2 = 7r -13
          15 = 7r
             r = \frac{15}{2}
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7 0
3 years ago
PLEASE SOLVE WILL GIVE BRAINLIEST IF RIGHT
wlad13 [49]

Answer: It would be (3)1

Step-by-step explanation:

3 0
2 years ago
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