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2 years ago

Karen says that the equation 3( x - 3) + 5 = 3x + 1 + 4

Mathematics

1 answer:

4vir4ik [10]2 years ago

3 0

Answer:

Step-by-step explanation:

3x-9=3x

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The area of a square is tripled by adding 10 cm to one dimension and 12 cm to the other. Determine the side length of the square

Rina8888 [55]

Area = length *width
A = x²
3x² = (x+10)(x+12)
3x² = x²+10x+12x+120
3x² = x²+22x+120
3x²-3x² = x²+22x+120-3x²
0 = -2x²+22x+120
Factor to solve for x:
-2(x²-11x-60)
(x+4)(x-15)
x = -4 & x = 15 but we can't have a negative length so we eliminate 4. The length of the square is 15 cm.

4 0

2 years ago

-4=^8x-3 please help

spayn [35]

Answer:

uhm whats the carrot for. that cant be the problem

Step-by-step explanation:

4 0

2 years ago

Answer fast but correctly

olasank [31]

${m}^{2} - n \\ Given, \: \: m = 3 \: \: n = 2, then, \\ \: \: {(3)}^{2} - 2 \\ = 9 - 2 \\ = 7$

Answer:

a. 7

Hope you could understand.

If you have any query, feel free to ask.

3 0

2 years ago

Read 2 more answers

I need help with this

slega [8]

Y is greater than or equal to 5. It says no less than, making the equal to possible.

6 0

2 years ago

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: 2*H + 3*C= 4.95 Equation (A)

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:

3*H + 2*C= 5.45 Equation (B)

Finally, the system of equations that models the problem is:

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

7 0

3 years ago