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3 years ago

Simplify the expression.

1 answer:

8 0

The answer is 2k^2 - 7k - 4 because 2k x k is 2k^2 and 2k x (-4) is -8k and 1 x k is k and 1 x (-4) is -4. So then you would get 2k^2 - 8k + k - 4 which simplifies to 2k^2 - 7k - 4 which is your answer.

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Alexis is making a cake and needs 4/5 cups of brown sugar for every 3/4 pounds of flour. How much brown sugar will be needed for

malfutka [58]

Answer:

16/15

Step-by-step explanation:

Ratio: 3/4 : 4/5

Whole number ratio: 15 : 16

You need to divide both sides by 15 so you can turn 15 to 1

Divide both sides of the ratio by 15: 1 : 16/15

So, for 1 pound of flour, you need 16/15 pounds of brown sugar for a cake.

3 0

3 years ago

Read 2 more answers

4-a = -4 please answer this

ikadub [295]

4 - 8 = -4.

Note that 8 (in the equation) comes after 4 (also in the equation) so, that makes the answer negative. If you wrote the equation like this:

8 - 4 = 4. Then it would equal 4, not negative 4 as given.

So,

a = 8

5 0

3 years ago

How many digits will be in the quotient of 4,641 divided by 39

adoni [48]

Answer:

3 digits

Step-by-step explanation:

4641 divided by 39 is 119, which is 3 digits

3 0

3 years ago

Read 2 more answers

What is the solution of x+8/5x-1>0 ?

kirill115 [55]

X + $\frac{8}{5}$ x - 1 > 0

First combine like-terms (x + $\frac{8}{5}$ x).
2.6x - 1 > 0

Add 1 to both sides.
2.6x > 1

Divide both sides by 2.6 to isolate x.
x > 0.38

6 0

4 years ago

Read 2 more answers

I REALLY NEED HELP T-T

Trava [24]

Answer:

option A : 7x - 1

Step-by-step explanation:

Area of the shaded region = [ Area of bigger rectangle] - [Area of smaller rectangle ]

Therefore, Area of bigger rectangle = length * breadth = (x - 1)(x + 5)

Therefore, Area of smaller rectangle = length * breadth = (x + 1)(x - 4)

Area of shaded region = [(x - 1)(x + 5)] - [(x + 1) ( x - 4)

= [x(x + 5) - 1(x + 5)] - [x(x - 4) + 1( x - 4)]

= [ x^2 + 5x - 1x -5] - [ x^2 - 4x + 1x - 4]

= x^2 + 5x - 1x - 5 - x^2 + 4x - 1x + 4 ....(after removing the brackets)

= x^2 - x^2 + 5x + 4x - 1x - 1x - 5 + 4.....( as (+ x^2 )and (- x^2 )get eliminated due to opposite signs)

= 9x - 2x - 1

= 7x - 1

So, option A: 7x - 1 is the correct answer.

5 0

3 years ago