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FrozenT [24]
3 years ago
13

Find the length of ad in the diagram shown

Mathematics
2 answers:
kvv77 [185]3 years ago
4 0
The answer to this is 7.5.
Ede4ka [16]3 years ago
4 0

Let as consider two triangles ABE and ACD

As we can see these two triangles ABE and ACD are similar triangles

Hence the ratio of sides must be equal

So

\frac{AB}{AC} = \frac{AE}{AD}

Now let AE = x

So plugging all the values we get

AB= 5 , AC= 11 , AE =x , AD = x+9

\frac{5}{11} =\frac{x}{x+9}

Cross multiplying we get

5(x+9) = 11(x)

Simplifying

5x +45 = 11x

Subtract 5x from both sides

45 = 6x

Divide both sides by 6

x= 45/6 = 7.5

Hence AE = 7.5

But we have to find the length of AD

AD = AE+ED = 7.5 + 9 = 16.5

AD= 16.5

Option D is the answer

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Sketch the graph of y = negative 2 x squared + x + 1 using your graphing calculator. What are the x-intercepts of this graph? a.
lions [1.4K]

The x-intercept is (1, 0) and (-0.5, 0).

The correct option is (a)

<h3>What is intercept?</h3>

The x-intercept is the point where a line crosses the x-axis, and the y-intercept is the point where a line crosses the y-axis.

Given function is:

f(x)= -2x^{2}+x+1

So, The graph of this equation is attaches below.

The x- intercepts of this graph

\mathrm{X\:Intercepts}:\:\left(-\frac{1}{2},\:0\right),\:\left(1,\:0\right)

or

X intercepts: (1, 0) and (-0.5, 0)

Hence, the x-intercept is (1, 0) and (-0.5, 0).

Learn more about intercept here:

brainly.com/question/14180189

#SPJ1

4 0
2 years ago
adult tickets to a play cost $22. tickets for children cost $15. tickets for a group of 11 people cost a total of $228. write an
Tom [10]

Adults = 9

Children = 2


Let x be the number of adults.

11-x is the number of children.


22x + 15(11-x) = 228

22x + 165 - 15x = 228

22x - 15x = 228 - 165

7x = 63

7x / 7 = 63 / 7

x = 9  number of adults.


11 - x = 11 - 9 = 2 number of children.


To check:


22x + 15(11-x) = 228

22(9) + 15(11-9) = 228

198 + 30 = 228

228 = 228


(not my answer btw)

3 0
3 years ago
Read 2 more answers
What is the value of x?
Triss [41]
Sides that two side is equal so
5x+10=40
5x=30
X=6
5 0
3 years ago
I need help ASAP PLEASEE
Alex787 [66]

Answer:

9. 21

10. 70

11. 64

12. 31

13. 85

14. 31

double check the answer, i didnt use a calculator so might be wrong

4 0
3 years ago
If the salesperson earned a $1500 commission, what was the price of the car? Determine the price
dalvyx [7]

Answer:

it's 7500

Step-by-step explanation:

20% of 7500 is 1500. General tip, commission is usually 25%

7 0
3 years ago
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