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strojnjashka [21]
3 years ago
13

The first step in determining the solution to the system of equations, y = -x2 - 4x - 3 and y = 2x + 5, algebraically is to set

the
two equations equal as X? - 4x - 3 = 2x + 5. What is the next step?
Set y = 0in y = -x? - 4x - 3.
Factor each side of the equation.
Use substitution to create a one-variable equation.
Combine like terms onto one side of the equation
Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
6 0

Answer:

Combine like terms onto one side of the equation

Step-by-step explanation:

You have

-x^2  -4x  - 3  = 2x + 5

It seems that we should combine like terms to make this equations smaller.

-x^2 - 4x - 3  - 2x  - 5 = 0

-x^2  -6x  - 8 = 0

- (x + 2)(x + 4) = 0

x = -2  or  x  = -4

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Explain the difference between (-5)2 and<br> -52.
Tpy6a [65]

Answer:

the parentheses say that you have to multiply -5 and 2

where as -52 is just a number.

7 0
3 years ago
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A credit card states that your payment will be a minimum of $15 plus 1% of your unpaid balance. Your unpaid balance is $2,365.Wh
Pachacha [2.7K]
Alright, to get 1% of his unpaid balance, we can make 1% = 0.01 by moving the decimal place 2 places over. Multiplying 0.01 by 2365 gets 1% of your unpaid balance=23.65. Since we have to add 15 as a base value, we have 
15+23.65=38.65
3 0
3 years ago
A rectangular brick walkway has a length of ten feet and a width of four feet.The length and the width of the walkway will each
ankoles [38]

Answer:

\boxed{\text{22.5 ft}^{2}}

Step-by-step explanation:

Existing walkway

 l = 10 ft

w = 4 ft

A₁ = lw = 10 ft × 4 ft = 40 ft²

New walkway

Expanding a measurement by 25 % means that you multiply it by a factor of 1.25.

New length = 10 × 1.25 = 12.5 ft

New width =    4 × 1.25 =   5    ft

A₂ = lw = 12.5 ft × 5 ft = 62.5 ft²

Increase in area

A₂ - A₁ = 62.5 – 40 = 22.5 ft²

The increase in area is \boxed{\textbf{22.5 ft}^{2}}

6 0
3 years ago
How many times does 8 go in 400
Julli [10]

400/8 = 50   divide 8 into forty for 5 and 8 into 0 for the 0   answer is 50
8 0
3 years ago
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Find the area of the composite shape... WILL MARK BRAINIEST
Masteriza [31]

Answer:

324.5m^2

Step-by-step explanation:

To find the area of the composite shape, divide the shape into 3 known shapes and calculate their areas.

SO, here we divide the shape into 2 triangles and 1 rectangle.

Area of rectangle = 15 x 8 = 120m^2

Area of triangle 1 = 1/2 x 7 x 15 = 52.5m^2

Area of triangle 2 = 1/2 x 9 x 8 = 4 x 9 = 32cm^2

Now, the sum of these areas = area of composite shape = 32 + 52.5 + 120 = 204.5m^2

Hope this helps.

Please mark brainiest

Good Luck

8 0
3 years ago
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