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seraphim [82]
2 years ago
8

Me ajudaa por favor, é urgente

Mathematics
1 answer:
Zigmanuir [339]2 years ago
6 0

Answer: x=16 kg.

Step-by-step explanation:

\displaystyle\\x+x+\frac{1}{2}x=40\\\\ 2\frac{1}{2}x=40\\\\\frac{(2*2+1)}{2}x=40\\\\ \frac{5}{2}  x=40\\\\Multiply\  both\  sides\  of\  the\  equation\  by\  2:\\\\\frac{5}{2}x*2 =40*2\\\\5x=80\\\\Divide\  both\  sides\  of\  the\  equation\  by\  5:\\\\x=16\ kg.

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3x + 6y = 4y - 4
gulaghasi [49]

Answer: y = 2/3x + 41/3

Step-by-step explanation:

First convert the equation into slope-intercept  

3x + 6y = 4y  - 4

      -4y    -4y

3x + 2y = -4

-3x            -3x

  2y = -3x - 4

  y = -3/2x - 2  

Perpendicular lines have a negative reciprocal for their slopes.

The negative reciprocal of -3/2  is   2/3

Now using the slope 2/3 you will use the formula  y =mx +b  and input the  slope, and the x and y coordinates of the given point, (-10,7), to solve for the y-intercept.

  7 = 2/3(-10) + b

 7 = -20/ 3 + b  

+ 20/3   + 20/3

  b =  20/3 + 21/3 = 41/3  

Since the the y-intercept is 41/3 then the equation will be , y = 2/3x + 41/3

   

4 0
3 years ago
PLEASE I NEED HELP WITH THIS
Ber [7]

Given:

The figure of a circle.

To find:

The measure of arc AD and measure of each arc.

Solution:

The measure of arc is equal to the central angle of that arc.

The central angle of arc AD is 105 degrees. So,

m(arc(AD))=105^\circ

The central angle of arc BC is 35 degrees. So,

m(arc(BC))=35^\circ

The central angle of arc CD is 50 degrees. So,

m(arc(CD))=50^\circ

The central angle of a complete circle is 360 degrees. So,

m(arc(AD))+m(arc(BC))+m(arc(CD))+m(arc(AB))=360^\circ

105^\circ+35^\circ+50^\circ+m(arc(AB))=360^\circ

190^\circ+m(arc(AB))=360^\circ

m(arc(AB))=360^\circ-190^\circ

m(arc(AB))=170^\circ

Therefore, the measure of arc AD is 105°, the measure of arc BC is 35°, the measure of arc CD is 50° and the measure of arc AB is 170°

3 0
3 years ago
50 POINTS!
goldfiish [28.3K]

Answer:B

Step-by-step explanation: i got a 100

4 0
3 years ago
Read 2 more answers
Chelsea shows her work in finding the solution to 4x−5=2+3(x−3). After checking her answer in the original equation, she found t
Ainat [17]

quita los paréntesis: 4x-5=2+3(x-3) multiplica paréntesis X3, elimina el paréntesis: 4x-5=2+3x-9 calcule: 4x-5= -7+3x mueve los términos y te quedará así: 4x-3x-5=-7

agrupe los términos semejantes: x=-7+5

calcular la suma, y el resultado final sería: x= -2

Step-by-step explanation:

espero te sirva

8 0
3 years ago
Read 2 more answers
What are2 continents that are made completely out of desert??
laiz [17]
Antarctica and asia


I hope this helps
4 0
3 years ago
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