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3 years ago

Please help, I am so confused. Find the missing length indicated.

Mathematics

2 answers:

horsena [70]3 years ago

7 0

Answer:

its D

Step-by-step explanation:

In a right triangle the hypotenuse which is 16+9 =25 has to be the largest side. Since x is not the hyportenuse it has to be lower which only leaves one answer : 15

vazorg [7]3 years ago

7 0

Answer:

Step-by-step explanation:

these are tough to solve , don't feel bad. soo part of the trick is that the two side set up similar triangles, then

16 / y = y /9 ( the two triangles

16* 9 = $y^{2}$

144 = $y^{2}$

12 = y

y is the length between the two triangles , so since we now know that part, we can solve the triangles.

lets use tan to solve one of the angles of the smaller triangle

TOA to remember how tan fits on a triangle

Tan = Opp / Adj

Tan(Ф) = 9/12

Ф = arcTan(9/12)

Ф = 36.869897

knowing that we can solve for x

use CAH cos = Adj / Hyp

Cos(36.869897) = 12 / Hyp

Hyp = 12/ Cos(36.869897)

Hyp = 15 :) that seems reallly good .. :P

x = 15 there you go

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Mark wants to use a grid like the ones in exercises 1 and 2 to model the percent equivalent of the fraction 2/3.How many grid sq

Marrrta [24]

Answer:

67 squares or 66.66 squares.

2/3 turned into a decimal is 66.66 or rounded, 67 squares.

Hope this helped! (plz mark me brainliest!)

4 0

3 years ago

Need help.....thanks so much

tatuchka [14]

Start by adding up the total sales in 2011 and 2012. You can make approximate estimates for the bars that are between lines. Since everything is in millions, you can ignore the 6 zeros behind every number to speed up your calculation:

1) In 2011, Asia sold 250, America sold 325, Europe sold ~210, Africa sold 150. The total in 2011 was 250+325+210+150 = 935.

2) In 2012, Asia sold ~130, America sold ~280, Europe sold ~230, and Africa sold ~140. The total in 2012 was 130+280+230+140=780.

Now find the percent decrease. Percentage decrease is basically what percent of your original number was subtracted from that original number to get the new number.
Percent decrease is calculated by (1) calculating the decrease from original number-new number, then (2) dividing that decrease by the original number, and then (3) multiplying your quotient by 100% to get a percentage:

1) Your original number is 935, from 2011, because that's the year you started out with. Your final number is 780, from 2012. The decrease is: 935-780 = 155.

2) Divide 155 by your original number. 155/935 ≈ 0.17

3) Finally multiply your quotient from step 2 by 100% to get your percent decrease: 0.17*100% = 17%.

The answer is A) 17.

8 0

3 years ago

Calculate the radius of the circle when its diameter is 42 cm.

Semmy [17]

Answer:

radius is half of the diameter

42/2= 21

the radius is 21 cm

Step-by-step explanation:

4 0

4 years ago

Help!!!!!!?!!!!!!!!!!??????????