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shutvik [7]
3 years ago
9

A group of 20 students and 4 adults are going on a trip to the museum. Show the ratio.

Mathematics
1 answer:
natima [27]3 years ago
5 0

Answer:

5:1

Step-by-step explanation:

I think

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Evaluate when x = 3, y = -3 and z = -2:<br><br> xy + 2z
wel

Answer:

3*-3+2*-2=

Step-by-step explanation:

-13

4 0
3 years ago
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What's the equivalent of the expression -2 (-x +5y ) + 3 (2x - 6y)?
Anastasy [175]

Answer:

Step-by-step explanation:

-2 (-x +5y ) + 3 (2x - 6y)

Opening bracket

= 2x - 10y + 6x - 18y

= 8x - 28y

= 4(2x - 7y)

6 0
2 years ago
Out of 100 students,15 passed in english, 12 passed in mathematics, 8 in science, 6 in english and mathematics, 7 in mathematics
Lyrx [107]
Because there are 4 students who passed in all subjects, we can say that only 2 students passed in English and Mathematics only, only 3 students passed in Mathematics and Science only, and no one passed in English and Science only.

Given that we have deduced the number of students who passed in two subjects, we can now solve for the number of students who passed only one subject. 
                English = 15 - (4 + 2 + 0) = 9
                Mathematics = 12 - (4 + 3 + 2) = 3
                Science = 8 - (4 + 3 + 0) = 1

1. In English but not in Science,
                    9 + 2 = 11
2. In Mathematics and Science but not in English
                    3 + 3 + 1 = 7
3. In Mathematics only 
                             = 3
3. More than one subject only
                   3 + 4 + 2 + 9 = 18

It will really be helpful if you draw yourself a Venn Diagram for this item. 
8 0
3 years ago
Read 2 more answers
What point on the parabola is closest to the point
Thepotemich [5.8K]

Answer:

Suppose the closest point is at p=(x0,y0), and set q=(−2,−3). Then the tangent to the parabola at p is perpendicular to ℓ, the line through p,q. and we end up numerically computing the roots from here.

7 0
2 years ago
Find AB. Round to the nearest tenth if necessary.<br>​
shusha [124]

Answer:

I think the right answer would be 7

Step-by-step explanation:

We got-ta use the equation: CA * BA = DA²

CA = 15 + BA

DA² = 8² = 64

=> (15 + BA) BA = 64

Subtract 15 from each side:

BA(BA) = 49

BA² = 49

Now take the square root of each side

BA = 7

Hope this helps!

3 0
3 years ago
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