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vazorg [7]
3 years ago
8

Do you know how to solve this problem plz help with detail explanation

Mathematics
1 answer:
Oxana [17]3 years ago
8 0
First find BE using pythogorean theorem in triangle BEF.
Then draw a line from E to C. Now you have BEC.
Find EC from BEC.
Then you could easily find the required answer ED from triangle CDE.
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A grocery store sells a bag of 8 oranges for $6.80. How much does one orange cost?
Vladimir79 [104]

Answer:

A 6 lb bag of another brand

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
You throw a ball up and its height h can be tracked using the equation h=2x^2-12x+20.
postnew [5]

<em><u>This problem seems to be wrong because no minimum point was found and no point of landing exists</u></em>

Answer:

1) There is no maximum height

2) The ball will never land

Step-by-step explanation:

<u>Derivatives</u>

Sometimes we need to find the maximum or minimum value of a function in a given interval. The derivative is a very handy tool for this task. We only have to compute the first derivative f' and have it equal to 0. That will give us the critical points.

Then, compute the second derivative f'' and evaluate the critical points in there. The criteria establish that

If f''(a) is positive, then x=a is a minimum

If f''(a) is negative, then x=a is a maximum

1)

The function provided in the question is

h(x)=2x^2-12x+20

Let's find the first derivative

h'(x)=4x-12

solving h'=0:

4x-12=0

x=3

Computing h''

h''(x)=4

It means that no matter the value of x, the second derivative is always positive, so x=3 is a minimum. The function doesn't have a local maximum or the ball will never reach a maximum height

2)

To find when will the ball land, we set h=0

2x^2-12x+20=0

Simplifying by 2

x^2-6x+10=0

Completing squares

x^2-6x+9+10-9=0

Factoring and rearranging

(x-3)^2=-1

There is no real value of x to solve the above equation, so the ball will never land.

This problem seems to be wrong because no minimum point was found and no point of landing exists

3 0
3 years ago
Which of the following functions has the greatest y-intercept?
Rina8888 [55]
(2, 8) because 8 is not negative

hope it helps,
xXbeautyXx
6 0
3 years ago
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What is the slope intercept form of 3x+1=7-4y
Murrr4er [49]

for a line in the form of y=mx+b, the slope is m and he y intercept is b.

y= -3/4x + 3/2m = -3/4, b=3/2

5 0
3 years ago
of the last 15 contestants on a game show, 3 won a prize. Considering this data, how many of the next 20 contestants would you e
nadya68 [22]
You do 3/15 which is 0.2

then 0.2*20 which is 4

you can expect 4 to win a prize

hope this helps and you rate me good;)
4 0
3 years ago
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