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2 years ago

Evaluate the expression when x = -5. x^2 + 9x-6

Mathematics

1 answer:

maw [93]2 years ago

3 0

Answer:

-26

Step-by-step explanation:

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Which expression below are equivalent to 2(2x + 1)

emmainna [20.7K]

Answer:

4x+2

Step-by-step explanation:

you are doing distributive property so the answer could possibly be: 4x+2

7 0

3 years ago

Decrease £390 by 10%

Savatey [412]

Answer:

the other guy is correct, i think

Step-by-step explanation:

6 0

2 years ago

What is the sum of three even consecutive integers is -72

Inga [223]

Answer:

$-26,-24,-22$

Step-by-step explanation:

<em><u>The correct question is</u></em>

The sum of three consecutive even integers is -72. what are the three numbers

Let

x ----> the first consecutive even integer

x+2 ----> the second consecutive even integer

x+4 ----> the third consecutive even integer

we know that

$x+(x+2)+(x+4)=-72$

solve for x

$3x+6=-72\\3x=-78\\x=-26$

$x+2=-26+2=-24$

$x+4=-26+4=-22$

therefore

the numbers are

$-26,-24,-22$

7 0

3 years ago

Please help!! I need all I can get!!

LuckyWell [14K]

Answer:

x = 13

Step-by-step explanation:

6x + 14 + 4x - 8 + 2x + 18 = 180 {Angle sum property of tiangle}

6x + 4x + 2x + 14 - 8 +18 = 180 {Combine like terms}

12x + 24 = 180 {Subtract 18 from both sides}

12x = 180 - 24

12x = 156 {Divide both sides by 12}

x = 156/12

x = 13

3 0

2 years ago

What are these fractions in simplest form?

Anton [14]

$\frac{16y^{3}}{20y^{4}} = \frac{4}{5y}$
$\frac{6xy}{16y} = \frac{3x}{8}$
$\frac{abc}{10abc} = \frac{1}{10}$
$\frac{mn^{2}}{pm^{5}n} = \frac{n}{pm^{4}}$
$\frac{12h^{3}k}{16h^{2}k^{2}} = \frac{3h}{4k}$
$\frac{8x}{10y} = \frac{4x}{5y}$
$\frac{24n^{2}}{28n} = \frac{6n}{7}$
$\frac{30hxy}{54kxy} = \frac{5h}{9k}$
$\frac{5jh}{15jh^{3}} = \frac{1}{3h^{2}}$
$\frac{20s^{2}t^{3}}{16st^{5}} = \frac{5s}{4t^{2}}$

8 0

3 years ago