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agasfer [191]
2 years ago
12

Can someone check this for me please?

Mathematics
2 answers:
choli [55]2 years ago
5 0

Answer:

B. -4, -3

Step-by-step explanation:

The equation x^(2) + 7x + 12 can be factored using the AC method resulting in

( x + 4 )( x + 3 ).  So x = -4, -3. You can use foil to check.

pashok25 [27]2 years ago
5 0
I’m not positive but I think the answer is actually B I’m not sure tho!
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Solve each system by substitution. Check your answers.<br> 4x+2y=7 , y = 5x
Kazeer [188]

By substitution, the solution of the system of equations, 4x + 2y = 7 and y = 5x, is (1/2 , 5/2).

A system of linear equations is a set of two or more equations which includes common variables. To solve system of equations, we must find the value of the unknown variables used in the equations that must satisfy both equations.

There are three methods that can be used to solve system of linear equations.

1. Elimination

2. Substitution

3. Graphing

Using substitution method, given two linear equations in x and y,

4x + 2y = 7     (equation 1)

y = 5x     (equation 2)

Since the second equation is already expressed in y in terms of x, substitute the second equation to the first equation.

4x + 2y = 7     (equation 1)

4x + 2(5x) = 7

4x + 10x = 7

Combining all terms containing the variable x on one side and the constants on the other side of the equality, and solving for x.

4x + 10x = 7

14x = 7

x = 1/2

Substitute the value of x in the second equation and solve for y.

y = 5x

y = 5(1/2)

y = 5/2

Hence, the solution of the given system of equations is (1/2 , 5/2).

To learn more about solving systems of equations: brainly.com/question/25869125

#SPJ4

5 0
1 year ago
What statement is always true? A the sum of 2 irrational numbers is rational B the product of 2 irrational numbers is rational C
Akimi4 [234]

I think the answer is D. but I'm not sure.

7 0
3 years ago
What is 1/10 of 30000
nevsk [136]
1/10 of 30000 is 3000 because 30000 divided by 10 is 3000.
8 0
3 years ago
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Jan needed to empty 18 gallons of water from a tub into jugs that hold 0.5 gallons of water. How many jugs did Jan need?
Ilia_Sergeevich [38]
So you would do,
18 gallons of water divided by 0.5 gallons of water 
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8 0
3 years ago
Multiply -3x(4x - 5)
Burka [1]
Hopes this helps if right please mark as brainlist:

Answer: -12x^2 + 15x
5 0
2 years ago
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