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lisabon 2012 [21]
3 years ago
9

In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that

a student who has a cat also has a dog?
Has a cat Does not have a cat
Has a dog 7 6
Does not have a dog 8 2
Mathematics
1 answer:
myrzilka [38]3 years ago
5 0
Outcome C joint D = 7, D excluding C is 6, C excluding D = 8, no C no D =2. Should be 23 people in total in that class. 7/23.
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6. For every 12 burpees Melinda did, she did 20 squats.
Natali5045456 [20]

Answer:

48 burpees & 80 squats

Step-by-step explanation:

Let burpees= x

Let squat = y

For every 12 burpees Melinda did, she did 20 squats.

X/y =12/20

20x= 12y

X= 0.6y

Melinda did a total of 128 squats and burpees

X+y= 128

But x= 0.6y

0.6y +y= 128

1.6y= 128

Y= 128/1.6

Y= 80

X+y= 128

X+80= 128

X=128-80

X= 48

6 0
3 years ago
Use a trigonometric ratio to find the distance EF.
leonid [27]

Answer:

The height of the building is approximately <u>73 m</u>.

Step-by-step explanation:

The triangle EFG is shown below.

Given:

Length of shadow of building is, FG=34\ m

Angle of inclination of Sun with the vertical is 25°.

Therefore, the angle of inclination of Sun with the horizontal is given as:

\angle G=90-25=65\°

Now, in triangle EFG as shown below, we use the tangent ratio to determine the height of building EF. Therefore,

\tan (\angle G)=\frac{EF}{FG}\\\tan 65\°=\frac{EF}{34}\\EF=34\times \tan 65\°=72.9\ m\approx 73\ m

Therefore, the height of the building is approximately 73 m.

4 0
3 years ago
What us the range of the function y=x^2
forsale [732]
[0, inf)

The least y-value the function can have is 0 because the square of a number cannot be negative.
3 0
3 years ago
3. Perimeter:<br> How to find perimeter
Hatshy [7]

Answer:(lxl)x(wxw)

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Na którym rysunku narysowano symetralną odcinka KL?<br>Która z tych liter nie ma osii symetrii?
tensa zangetsu [6.8K]

Answer:

- Only Drawing D has KL being a symmetrical segment.

- Drawings A, B and C have no axis of symmetry.

- Tylko rysunek D ma KL będący segmentem symetrycznym.

- Rysunki A, B i C nie mają osi symetrii.

Step-by-step explanation:

English Translation

In which drawing was the symmetrical segment of KL drawn? Which of these letters has no axis of symmetry?

Solution

The attached image to the question is presented in the attached image to this Solution.

Symmetry is a concept where a figure/shape has half of its part being a mirror image of the other part.

About the line or axis of symmetry, the structure or figure can be rotated at right angles or whole number multiples of right angles and the resulting structure is still the same as the one we started with.

Of the 4 drawings, only drawing D satisfies this conditions/criteria. And Hence, it is the only drawing amongst the four with an axis of symmetry.

In Polish/Po polsku

Załączony obraz do pytania jest przedstawiony na załączonym obrazku do tego rozwiązania.

Symetria to koncepcja, w której figura / kształt ma połowę swojej części stanowiącą odbicie lustrzane drugiej części.

W odniesieniu do linii lub osi symetrii, strukturę lub figurę można obracać pod kątem prostym lub wielokrotności liczby całkowitej pod kątem prostym, a wynikowa struktura jest nadal taka sama jak ta, od której zaczęliśmy.

Z 4 rysunków tylko rysunek D spełnia te warunki / kryteria. I dlatego jest to jedyny rysunek wśród czterech z osią symetrii.

Hope this Helps!!!

Mam nadzieję że to pomoże!!!

3 0
3 years ago
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