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grigory [225]
2 years ago
14

<CAB=<CDE,AC=4cm, DC=5cm andDE=7cm. Determine thelength of sides AB of∆ABC.​

Mathematics
1 answer:
Degger [83]2 years ago
3 0

this is the answer you can try it to see if it works

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M is the midpoint of AB has coordinates(5, −4), if A has coordinates(6,1). What are thecoordinates of B. (1.5pts)?
Alexandra [31]

Answer:

coordinates of A are (11/2, -3/2)

Step-by-step explanation:

midpoint = M(5, −4)

start point = A(6, 1)

endpoint = B(x, y)

 

                                      equation :

x =    m1 × x2 + m2 × x1                         y =  m1 × y2 + m2 × y1

       _____________                                 _____________

              m1 + m2                                             m1 + m2

x =  (1 × 6) + (1 × 5)                                    y=  (1 × 1) + (1 × -4)

  _____________                                      ____________

          1 + 1                                                           1 + 1

x = (6+5 )/ 2 = 11 / 2                                  y = (1+(-4))/2+(1-4)/2 = -3/2

                                ∴coordinates of A are (11/2, -3/2)

i think u should view this on a wider screen if ur using a phone <3

7 0
3 years ago
The gravitational force formula is F=Gm1m2 where F is the force between two objects, G is the constant of gravitation, m1 is the
Kruka [31]

\text{r = }\dfrac{\sqrt{G*m_1*m_2}}{\sqrt{F}}

This is what is in the middle of the second paragraph. That statement is correct.

I don't know that it is any simpler or not, but what they have done in the answer is rationalize the denominator. That means that the denominator is no longer under the square root sign.

To get that result, you multiply numerator and denominator by √F

When you do that, your get

\text{r =}\dfrac{G\sqrt{m_1*m_2}\sqrt{F}} { \sqrt{F*}\sqrt{ F}}

This results in the middle answer.

\text{r = } \dfrac{ \sqrt{G m_1*m_2*F}}{F}

6 0
3 years ago
Read 2 more answers
Write the fraction as an 1/15 equivalent fraction with a denominator of 45.​
Readme [11.4K]

9514 1404 393

Answer:

  3/45

Step-by-step explanation:

To find the numerator, multiply the desired denominator by the fraction.

  x/45 = 1/15

  x = (45)(1/15) = 45/15 = 3

The equivalent fraction is 3/45.

5 0
3 years ago
Fifteen decreased by four times a number
expeople1 [14]
The answer is (4x)-15.
5 0
4 years ago
Read 2 more answers
In circle A shown below, is a diameter and the measure of is 36°.
Stella [2.4K]
The inscribed triangle is a right triangle. The diameter of the circle served as the hypotenuse of the triangle.

Angle C is 90°
Angle D = 36°/2 = 18°

<span>The measure of ∡DBC?
</span>
180° - 90° - 18° = 72°

Remember that interior angles of a triangle sum up to 180°.
6 0
3 years ago
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