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3 years ago

Taylor Starts Practicing Her Math Facts At 4:30. She Is Finished Practicing At 7:00.

Mathematics

1 answer:

Trava [24]3 years ago

5 0

Taylor practiced 2.5 hours.

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(07.05)

Llana [10]

Answer: n = -2

Step-by-step explanation:

3n +2(n + 2) = 9n + 12

(simplify 2(n + 2)) =

3n + 2n + 4 = 9n + 12

(subtract 9n from both sides)

3n + 2n - 9n + 4 = 12

-4n + 4 = 12

(subtract 4 from both sides)

-4n = 8

(divide -4 from both sides)

n = -2

5 0

3 years ago

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What The results of this equations.?

Otrada [13]

A.9×6x - ( 9×2)=
64x-18 = 0
64x=18
x=18/64 =1/3 =0.3
B. 64x+18=0
64x= -18
x =-18/64
x= -1/3
x = -0.3

6 0

2 years ago

What number must be added to the expression below to complete the<br> square?<br> x² - 18x

kiruha [24]

Answer:

$\boxed {\boxed {\sf 81}}$

Step-by-step explanation:

The standard form of a quadratic is:

$ax^2+bx+c$

To complete the square, the a (leading coefficient) must be 1 and there can only be terms with variables on one side.

The expression given:

$x^2-18x$

follows these rules. Next, we divide the b (linear coefficient) by 2, then square it. Basically:

$(\frac{b}{2})^2$

The b in the expression is -18.

$(\frac{-18}{2})^2$

$(-9)^2= -9*-9= 81$

This is the number that is added.

5 0

2 years ago

24=12 18=9 14=7 8=4 6=?

BartSMP [9]

Each pair of numbers gives a value then another value that is 1/2 of the first. So the answer would be

6 = 3

5 0

2 years ago

Helppp meeee pleaseeeee

lutik1710 [3]

I hate math its so hard for no reason

6 0

2 years ago

Read 2 more answers