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Serggg [28]
3 years ago
15

What is the length of AD?

Mathematics
1 answer:
Setler [38]3 years ago
7 0
We find the length of AD using the similarity of right triangle property. See image attached.

AD² = BD × CD
AD² = 9 × 36
AD² = 324
AD² = 18²
AD = 18

The length of AD is 18 units

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Last year the robotics club had 30 members. This year the club has 24 members. Find the percent change in the number of members.
Naddika [18.5K]

Answer:

the answer is .6

Step-by-step explanation:

so 30 minus 24 is 6 turn 6 into percentage which is 0.6

4 0
3 years ago
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Which equation is the inverse of y=2x^2-8
shusha [124]

Step-by-step explanation:

In order to get the inverse of equation, we will interchange the variables and solve for x and y as follows.

             y = 2x^{2} - 8

whereas,  y + 8 = 2x^{2}

    or              x = \sqrt{\frac{y+8}{2}}

Now, on interchanging the variable we will get the equation as follows.

               x = 2y^{2} - 8

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4 0
3 years ago
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two ships leave a port at the same time. the first ship sails on a bearing of 55° at 12 knots (natural miles per hour) and the s
Korvikt [17]

Answer:

37.59 nautical miles

Explanation:

Distance = Speed x Time

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\begin{gathered} =12\times1.5 \\ =18\text{ miles} \end{gathered}

The speed of the second ship = 22 knots

Thus, the distance covered after 1.5 hours

\begin{gathered} =22\times1.5 \\ =33\text{ miles} \end{gathered}

The diagram representing the ship's path is drawn and attached below:

The angle at port = 90 degrees.

The triangle is a right triangle.

Using Pythagorean Theorem:

\begin{gathered} c^2=a^2+b^2 \\ c^2=18^2+33^2 \\ c^2=324+1089 \\ c^2=1413 \\ c=\sqrt[]{1413} \\ c=37.59\text{ miles} \end{gathered}

The two ships are 37.59 nautical miles apart after 1.5 hours.

8 0
1 year ago
CAN SOMEONE PLEASE HELP ME SOLVE THESE ASAP
Mariulka [41]

so for the 1st one triangle is 8

diamond is 3

and star is 11

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and triangle is 2 again

and for the last one well try to do it yourself and if you cant do it comment on this =)

8 0
2 years ago
The ratio of apples to pears in Zach's basket is 6 to 8. If he has a total of 21 pieces of fruit, how many of them are apples?
sergij07 [2.7K]

Answer:

7 kg=  weight of apples

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3 years ago
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