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juin [17]
2 years ago
11

What are the solutions of this quadratic equation? x + 2x=-2

Mathematics
2 answers:
olganol [36]2 years ago
6 0

Answer:

-\frac{2}{3}

Step-by-step explanation:

The first step is to combine like terms. x + 2x = 3x, the equation is now 3x= -2

Now divide 3 on both sides to get x = -\frac{2}{3} or -0. repeating 6

natta225 [31]2 years ago
5 0

Answer:

2x=2

Step-by-step explanation:

easy

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Jan and Wayne went to the store to buy some groceries. Jan bought 2 cans of corn beef hash and 3 cans of creamed chipped beef fo
yulyashka [42]

Answer:

The system of equations that models the problem is:

\left \{ {{2*H+3*C=4.95} \atop {3*H+2*C=5.45}} \right.

Step-by-step explanation:

A system of equations is a set of two or more equations with several unknowns in which we want to find a common solution. So, a system of linear equations is a set of (linear) equations that have more than one unknown that appear in several of the equations. The equations relate these variables or unknowns to each other.

In this case, the unknown variables are:

  • H: price of a can of corn beef hash
  • C: price of a can of creamed chipped beef

Knowing the unit price of a product, the price of a certain quantity of that product is calculated by multiplying that quantity by the unit price. So the price for 2 cans of ground beef hash can be calculated as 2 * H and the price for 3 cans of ground beef with cream can be calculated as 3 * C. Jan paid $ 4.95 for those amounts from both cans. This means that the sum of the can prices must be $ 4.95. So: <u><em>2*H + 3*C= 4.95 Equation (A)</em></u>

Thinking similarly, if Wayne bought 3 cans of corn beef hash and 2 cans of creamed chipped beef for $5.45, Wayne's buy can be expressed by the equation:

<u><em>3*H + 2*C= 5.45 Equation (B)</em></u>

Finally, <u><em>the system of equations that models the problem is:</em></u>

<u><em></em></u>\left \{ {{2*H+3*C=4.95} \atop {3*H+2*C=5.45}} \right.<u><em></em></u>

7 0
3 years ago
I NEED URGENT WHAT IS 14%12
Rufina [12.5K]
1.68 because you multiply then divide by 100
8 0
3 years ago
Given: ΔPSQ, PS = SQ PΔPSQ = 50 SQ – PQ = 1 Find: Area of ΔPSQ
Pachacha [2.7K]
The first part is to find the length SQ which is equal to SP.
Use the sine rule.
SQ/sin 65 = (SQ - 1)/Sin50
(sin50)/(sin 65) = (SQ-1)/SQ
0.8452(SQ) = SQ-1
0.1547SQ = 1
SQ = 6.46 
The formula to apply here is:
Area=1/2(SQ)(SQ)sin50
        = 0.5 × 6.46 × 6.46 × sin50
        = 15.984
3 0
3 years ago
You pick a card at random. Without putting the first card back, you pick a second card at random. What is the probability of pic
kiruha [24]
The answer is 1 /5 I think
7 0
3 years ago
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Simplify y^3*y^-5 write your answer using only positive exponents
shepuryov [24]

Answer:

y^(3_5)= y^(-2)=1/(y^2 )

final answer: 1/(y^2)

7 0
3 years ago
Read 2 more answers
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