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torisob [31]
3 years ago
7

Help please? I don’t get math at all

Mathematics
1 answer:
blagie [28]3 years ago
3 0

Answer:

DE=15 and AB=6

Step-by-step explanation:

Both Triangles are Similar. When looking at the length of AC, it is 3x smaller than CE. So we know that the triangle ABC is 3x smaller than CDE. Since we know that we can see that DE is 15 since it is 3x Larger than 5. We also know that AB is 6 since it is 3x smaller than 18

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What is the relationship between the discriminant of a quadratic and its graph?
faltersainse [42]

Answer:

In a quadratic equation of the shape:

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

we hate that the discriminant is equal to:

D =  b^2 - 4*a*c

This thing appears in the Bhaskara's formula for the roots of the quadratic equation:

x = \frac{-b +-\sqrt{b^2 - 4ac} }{2a}

You can see that the determinant is inside a square root, this means that if D is smaller than zero we will have imaginary roots (the graph never touches the x-axis)

If D = 0, the square root term dissapear, and this implies that both roots of the equation are the same, this means that the graph touches the x axis in only one point, wich coincides with the minimum/maximum of the graph)

If D > 0 we have two different roots, so the graph touches the x-axis in two different points.

4 0
3 years ago
Lucy’s order at the restaurant came out to $44.20. She decided to leave a 15% tip for the waitress. What is the overall total am
Goshia [24]

Answer:

$50.83

Step-by-step explanation:

5 0
3 years ago
Can somebody answer this for me I’ll appreciate it so much
Alik [6]
The answer is c 75


please mark me as brainliest
5 0
3 years ago
Read 2 more answers
PLEASE HELP PLEASE
Roman55 [17]

Answer:

8

Step-by-step explanation:

We have, 25% × x = 200

or,

25

100

× x = 200

Multiplying both sides by 100 and dividing both sides by 25,

we have x = 200 ×

100

25

x = 800

If you are using a calculator, simply enter 200×100÷25, which will give you the answer.

So now that you have the original number you just need to find 1% of 800

1% of 800 is 8

3 0
3 years ago
Which statement is true about the meaning of the equation 2=5x2/5
FinnZ [79.3K]
A:-) would be the correct answer because if 2/5 is 1/2 they size of 5 it would have to be 2/2-1/2.
5 0
3 years ago
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