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lapo4ka [179]
3 years ago
12

7x-3x+7=3(x+1)-9x how many solutions are there?

Mathematics
1 answer:
Marat540 [252]3 years ago
6 0
Distribute
7x-3x+3=3x+3-9x
Combine like terms
5x+3=-6x+3
Subtract the variables
3=11x+3
Subtract the numbers
0=11x
Divide
0=x
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Plz help, just look at the picture ​
motikmotik

Answer:

<2, <3, <4

Step-by-step explanation:

You have parallel lines cut by a transversal, so alternate interior angles are congruent. Also, alternate exterior angles are congruent. Corresponding angles are congruent.

Vertical angles are always congruent.

I'll write each congruent angle and the reason.

<2, vertical

<3, corresponding

<4, alternate exterior angle

7 0
3 years ago
¿Cuál es el porcentaje de aumento de 50 a 52?​
babymother [125]

Answer:

0.96153846153

Step-by-step explanation:

creo que la respuesta es 0.96153846153

porque if you divide 50/52 if should give you the right respuesta!

8 0
3 years ago
2/9 of the people on the restaurant are adults. If there are 95 more children than adults, how many children are there in the re
lana [24]

let's call the children "c" and the adults "a"

the total # of people in the restaurant = c+a
so 2/9 of (c+a) = a

therefore 2/9c + 2/9a = a
and a + 95 = c since there are 95 MORE children.

Let's substitute a+95 for c in the equation 2/9(c+a) = a
this gives us 2/9(a+95 + a) = a
then 2/9 a + 2/9(95) + 2/9(a) = a
so 4/9a +190/9 = a
and 190/9 = 5/9 a
so 190 must = 5a
finally a = 38 so c must = 38 + 95 = 133 there are 133 children
3 0
3 years ago
Use all of the angle relationships that we have covered to find the missing angles in the puzzle below
Sophie [7]

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

I started with triangle GHJ on the right. It is isosceles, so ...

  g = 48°

  h = 2(90 -g) = 84°

  k = 180° -h = 96°

Then, on the lower right, we have ...

  a = 180° -143° = 37°

  b = 143°

  c = e = a = 37°

  f = 90° -e = 53°

At vertex D, we also have ...

  85° +d = b  ⇒  d = 143° -85° = 58°

In triangle DGH, we have ...

  m + d = h  ⇒  m = h -d = 84° -58° = 26°

The sum of angles in triangle DGP is 180°, so ...

  p = 180° -85° -26° = 69°

Finally, ...

  s = p = 69°

  r = 180° -p = 111°

_____

The relationships we used are ...

  • corresponding angles are congruent (at a transversal of parallel lines)
  • alternate interior angles are congruent
  • an exterior angle equals the sum of remote interior angles
  • acute angles in a right triangle are complementary
  • angles in a triangle sum to 180°
  • linear pair angles are supplementary
  • angle sum theorem

7 0
3 years ago
Read 2 more answers
Two men are at the grocery store at noon. One walks 0.6 miles east and the other one walks 0.8 miles north. After that they stop
Anettt [7]
The north displacement and the east displacement can be viewed as simply the legs of a right triangle and the distance between them is just the magnitude of the hypotenuse so:

h^2=x^2+y^2, where h is the distance between the two points, x is the easterly distance and y is the northerly distance....

h^2=.8^2+.6^2

h^2=.64+.36

h^2=1

h=1

So they are one mile apart from each other.
3 0
3 years ago
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