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AnnyKZ [126]
4 years ago
14

at a conference for 500 people, 20% of the participants are french, 50% are americans, 5% are germans, and are of other national

ities. how many french participants are at the conference? 10 20 100 120
Mathematics
2 answers:
ale4655 [162]4 years ago
8 0

Answer:

c

Step-by-step explanation:

avanturin [10]4 years ago
4 0
The number of French participants is 20\%\cdot 500 = \frac{20}{100} \cdot 500 = 100.
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if a triangle has two angles that measures 46 and 102 degrees, what is the measure of the third angle?
Zinaida [17]

Answer:

All triangles need to have 180 degrees

subtract the angles you already know

180 - 102 - 46 = 180 - 148 = 32

There is  32 degrees left so 32 is the answer

Step-by-step explanation:

3 0
3 years ago
The question is in the image
Drupady [299]

Answer:

h(t) = -5*t^2 + 20*t  + 2

Step-by-step explanation:

First, we know that the motion equation of the ball will be quadratic, so we write the equation:

h(t) = a*t^2 + b*t + c

Now we need to work with the data in the table.

h(1) = 17

h(3) = 17

h(1) = h(2) = 17

Then we have a symmetry around:

(3 - 1)/2 + 1 = 2

Remember that the symmetry is around the vertex of the parabola, then we can conclude that the vertex of the parabola is the point:

(2, h(2)) = (2, 22)

Remember that for a quadratic equation:

y = a*x^2 + b*x + c

with a vertex (h, k)

we can rewrite our function as:

y = a*(x - h)^2 + k

So in this case, we can rewrite our function as:

h(t) = a*(t - 2)^2 + 22

To find the value of a, notice the first point in the table:

(0, 2)

then we have:

h(0) = 2 = a*(0 - 2)^2 + 22

         = 2 = a*(-2)^2 + 22

            2 = a*(4) + 22

           2 - 22 = a*(4)

            -20/4 = -5 = a

Then our function is:

h(t) = -5*(t - 2)^2 + 22

Now we just expand it:

h(t) = -5*(t^2 - 4*t + 4) + 22

h(t) = -5*t^2 + 20*t  + 2

The correct option is the first one.

4 0
3 years ago
Find the least common denominator and write the equivalent fractions 3/8 and 3/10​
Elina [12.6K]

Answer:

LCD of 3/8 and 3/10 is 40. The Equivalent fractions are 3/8 = 15/40 and 3/10 = 12/40 hope this helps :)

Step-by-step explanation:

6 0
3 years ago
Hey yall please help me I suffer from short time memory loss and it's hard for me to focus and remember Find the distance betwee
podryga [215]

Answer:

The distance between 2 points on a graph is given as:

root over of ((x2-x1)^2 + (y2-y1)^2)

using this formula we have,

root over of ((5-(-3))^2 + (1-(-4))^2

=root over of (64+25)= 9.43

Ans: the distance between A and b is 9.43 units.

3 0
3 years ago
1)The graph below shows a line segment XY:
Hitman42 [59]
The segment goes from point (-1, 3) to (1,-1)
Slope = rise / run = (-3 - 1) / (1 - (-1)) = -4 / 2 = -2
Slope = -2
5 0
4 years ago
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