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3 years ago

Evaluate the expression when m= -2

Mathematics

1 answer:

ZanzabumX [31]3 years ago

7 0

Answer:

im not positive but i think if im wrong then tell me

Step-by-step explanation:

Solution :

mn + m + n + 1

= m( n + 1 ) + 1( n + 1 )

= ( n + 1 )( m + 1 )

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pshichka [43]

Answer:

Step-by-step explanation:

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24 28 32 36 40 and so on. So the only numbers that x can be there are 1, 3, 5, 7, 9. Does that make sense? and can you manage the rest?

4 0

3 years ago

Which of the following statements must be true based on the diagram below?(Diagram is not to scale.)FDEO EF is a segment bisecto

8_murik_8 [283]

From the diagram given;

ABCD is a quadrilateral;

Line |EF| bisects the line |AD| and line |CD|,

Thus, from the given options;

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1 year ago

Select the ordered pairs that represent solutions to the system of inequalities.Select all that applyAnswer choices:(-6, 3)(-3,

Nadya [2.5K]

We can verify this with the graph

(-6, 3) NO

(-3, 3) NO

(-5, 0) NO

(-4, 2) YES

(0,0) NO

(-6, 6) YES

(-3, -6) NO

(-4.0) YES

the area where the solutions are in the yellow area

5 0

1 year ago

Quadratic 6X2 + 5X = -7

poizon [28]

Ok, so here your being asked to solve 6x2<span> + 5x = -7

The procedure that I did was using this formula it led me to get the following:
</span>Using the formula:

x = -(-5) ± √(-5)² - 4(6)(-6)/ 2(6)
x = 5 ± √ 25 + 144 / 12
x = 5 ± √ 169 / 12
x = 5 ± 13/12

x1 = 5 + 13/12
x1 = 18/12
x1 = 3/2

x2 = 5 - 13/12
x2 = -8/12
<span> x2 = - 2/3

Hope this helped :)</span>

7 0

3 years ago

Find the coordinates of the missing endpoint if m is the midpoint of ab. a(-9, -4) and m(-7, -2.5)

Julli [10]

Answer:

The coordinates of the point b are:

b(x₂, y₂) = (-5, -1)

Step-by-step explanation:

Given

As m is the midpoint, so

m(x, y) = m (-7, -2.5)

The other point a is given by

a(x₁, y₁) = a(-9, -4)

To determine

We need to determine the coordinates of the point b

= ?

Using the midpoint formula

$\left(x,\:y\right)=\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)$

substituting (x, y) = (-7, -2.5), (x₁, y₁) = (-9, -4)

$\left(-7,\:-2.5\right)=\left(\frac{x_2+\left(-9\right)}{2},\:\:\frac{y_2+\left(-4\right)}{2}\right)$

Thus equvating,

Determining the x-coordinate of b

[x₂ + (-9)] / 2 = -7

x₂ + (-9) = -14

x₂ - 9 = -14

adding 9 to both sides

x₂ - 9 + 9 = -14 + 9

x₂ = -5

Determining the y-coordinate of b

[y₂ + (-4)] / 2 = -2.5

y₂ + (-4) = -2.5(2)

y₂ - 4 = -5

adding 4 to both sides

y₂ - 4 + 4 = -5 + 4

y₂ = -1

Therefore, the coordinates of the point b are:

b(x₂, y₂) = (-5, -1)

6 0

3 years ago