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natima [27]
3 years ago
13

Can y’all help me with this

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
3 0

Answer:

it's the last one *25,000 J

Step-by-step explanation:

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Solve the following equation simultaneously 2a-3b+10=0, 10a+6b=8​
tia_tia [17]

2a -3b +10 =0\\\\10a+ 6b -8 =0\\\\\text{Using cross multiplication method}\\\\\\ \dfrac a{(-3)(-8)  - 6(10)} = \dfrac b{10(10) - 2(-8)} = \dfrac 1{ 2(6) - (-3)(10)}\\\\\\\implies  \dfrac a{24-60} = \dfrac b{100+16} = \dfrac 1{12+30}\\\\\\\\\implies -\dfrac {a}{36} = \dfrac b{116} = \dfrac 1{42}\\\\\\\text{Hence}\\\\a = - \dfrac{36}{42} = -\dfrac 67 \\\\\\ b= \dfrac{116}{42} = \dfrac{58}{21}

3 0
2 years ago
A rope is tied to the bottom of a hot air balloon ad shown below The rope makes an angle of 35 with the ground and is 75 ft long
damaskus [11]

Answer:

The answer to your question is 43 ft

Step-by-step explanation:

Data

angle = Ф = 35°

length = 75 ft

height = ?

Process

To solve this problem, use trigonometric functions. The trigonometric function that relates the Opposite side (height) and the hypotenuse (length) is sine.

               sin Ф = Height / length

-Solve for height

                height = length x sin Ф

-Substitution

                height = 75 x sin 35

-Simplification

                height = 75 x 0.574

-Result

                 height = 43 ft

6 0
2 years ago
What are the coordinates of the center of the ellipse shown below?
photoshop1234 [79]

Answer:

Option D (7, -3)

Step-by-step explanation:

We know that the general equation of an ellipse has the form:

\frac{(x-h)^2}{a^2} + \frac{(y-k)^2}{b^2} = 1

Where the point (h, k) are the coordinates of the center of the ellipse

In this case the equation of the ellipse is:

\frac{(x-7)^2}{4} + \frac{(y+3)^2}{16} = 1

Then

h=7\\\\k = -3

So The coordinates of the center of the ellipse are (7, -3)

8 0
3 years ago
Read 2 more answers
Can someone please help me?
Alisiya [41]

Answer:

Step-by-step explanation:

That'd be the Substitution Property.  Substitute -2 for x in x + 8 = 6 and arrive at the true statement 6 = 6.

4 0
3 years ago
What is the importance of the rule of law<br>​
V125BC [204]

Answer: The importance of the rule of law with these principles is self-evident. In our system, it is the foundation of governance. Under the rule of law, citizens can live and work safely. They will not be subjected to arbitrary government and are protected against any abuse of power by the state. hope this helps. Can u give me brainliest

Step-by-step explanation:

8 0
3 years ago
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