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tensa zangetsu [6.8K]
3 years ago
15

I need help worth 25 points please help

Mathematics
2 answers:
UNO [17]3 years ago
8 0
Person above is correct
elena55 [62]3 years ago
6 0

the answer is on the pictures

sorry if their wrong

x=1/2 (or 1)

y=3/4

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Solve the equation <br>y=2x-4, 3x+y=11​
Ostrovityanka [42]

Answer:

(3, 2)

Step-by-step explanation:

Given the 2 equations

y = 2x - 4 → (1)

3x + y = 11 → (2)

Substitute y = 2x - 4 into (2)

3x + 2x - 4 = 11

5x - 4 = 11 ( add 4 to both sides )

5x = 15 ( divide both sides by 5 )

x = 3

Substitute x = 3 into (1) for corresponding value of y

y = (2 × 3) - 4 = 6 - 4 = 2

Solution is (3, 2)

5 0
3 years ago
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Alvin is 9 years older than Elga. The sum of their ages is 89. What is Elga's age?
Mekhanik [1.2K]

Answer:

Alvin: 49

Elga: 40

Step-by-step explanation:

  1. The equation is 89 = x + (x-9).
  2. Remove the parenthesis and combine the like terms. 89 = 2x - 9
  3. Add 9 on both sides. 98 = 2x
  4. Divide by 2 on both sides. x = 49
  5. 49 is the age of Alvin. (49-9) 40 is the age of Elga.
7 0
4 years ago
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I HAVE 2 MINS TO FINSIH PLZ HELP
IceJOKER [234]

Answer:

The answer is 45

Step-by-step explanation:

7 0
3 years ago
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1 kg = ___ g<br><br> A : 1<br> B : 10<br> C : 100<br> D : 1,000
zlopas [31]
D: 1000 grams

thats the answer
7 0
3 years ago
Help plz<br>Find the measurement of the angles of a triangle if they are in the ratio 5:4:3 ​
Lerok [7]

Answer:

<u>See below:</u>

Step-by-step explanation:

Let the angles be 5x , 4x , 3x.[Since the angles are in ratio 5:4:3 ] respectively.

We know that sum of all angles of a triangle is 180°.

So,

5x + 4x + 3x = 180   {}^{ \circ}

Now Find the value of x of this equation.

\sf  \implies \: 5x + 4x + 3x = 180 {}^{ \circ}

\sf  \implies12x = 180 {}^{ \circ}

\sf  \implies \: x =  \cfrac{180 { {}^{ \circ} }}{12}

\sf  \implies \: x =  \cfrac{ \cancel{180 {}^{ \circ}} }{  \cancel{12}}

\sf  \implies \: x = 15 {}^{ \circ}

Now,

Multiply each ratio given by 15 which is the value of x we got.

That is;

\therefore \sf\implies \: First \: Angle = 5 \times 15  {}^{ \circ}  = \boxed{75 {}^{ \circ}}

\sf \sf  \implies \: Second\: Angle = 4\times 15  {}^{ \circ}  = \boxed{60 {}^  \circ}

\sf  \implies \: Third\: Angle = 3 \times 15 =  \boxed{ {45}^ \circ}

Hence,the measurements of the angles of the triangle would be 75°[First Angle],60°[Second angle],and 45° [Third Angle].

\rule{225 pt}{2pt}

I hope this helps!

Let me know if you have any questions.

5 0
2 years ago
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