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3 years ago

Simplify -7x(4+7x)-8(2-4x)

2 answers:

7 0

8x-49^2-16
because -7x(4+7x) is broken down to
-7x*4 = -28x
and
-7x*7x= -49x^2 the square root is because x*x= x^2
then you do the second part which is
-8(2-4x) and again you break it down
-8*2=-16
-8*-4x=36x
so now you have
-28x-49x^2-16+36x
and when you simplify you get
8x-49^2-16

kakasveta [241]3 years ago

4 0

-28x-49x-16+32x
-77x-16+32x
-45x-16

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9. Ximena made 26 out of 32 penalty kicks with her brother as the goalie.

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Answer:

26/32=13/16

Step-by-step explanation:

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3 years ago

Tom starts lawn mowing business before he can begin he purchases a new lawnmower each weekend he mows the same number of lawns a

Anastasy [175]

To be able to give the answer to this item, we are to represent first with any variables the amount he earns each weekend for mowing the same field. Also, we represent the number of weeks he had worked by the variable y. The total amount of money he will have after working for y weeks is,

T = xy

Since, we are not given with any other information of the other expenses that have to be paid then we can say that if T is already equal to the price of the new lawnmower then, Tom will be able to purchase it and begin his lawn mowing business in due time.

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3 years ago

Jim took his family to a movie. He paid $36 for 4 movie tickets. What was the cost of each ticket? (Your answer will not include

charle [14.2K]

Answer:

The cost of each ticket is 8 dollars.

Step-by-step explanation:

36 / 4 = 8

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hope this helps.

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2 years ago

Read 2 more answers

suppose you have a 4-liter bucket and a 7-liter bucket. you need 5-liters for an aquarium. Explain how to get 5liters if neither

olga55 [171]

Answer:

it is a 7 step process explained in explanation section

Step-by-step explanation:

Step one

fill 7 litre bucket then pour it in 4 liter bucket

output: 7 litre bucket has 3 litres and 4 litres bucket has 4 liter in it

Step two

drain four liter bucket and pour 3 liter from 7 litre bucket in it

output: 7 litre bucket has 0 litres and 4 litres bucket has 3 liter in it

step 3

fill 7 litre bucket and transfer water from it in 4 liter bucket which has already 3 liter in it

output: 7 litre bucket has 6 litres and 4 litres bucket has 4 liter in it

step 4

drain four liter bucket and pour 4 liter from 7 litre bucket which has 6 litre in it

output: 7 litre bucket has 2 litres and 4 litres bucket has 4 liter in it

step 5

drain 4 litre bucket and pour 2 litre from 7 litre bucket

output: 7 litre bucket has 0 litres and 4 litres bucket has 2 liter in it.

step 6

fill 7 liter bucket fully

output: 7 litre bucket has 7 litres and 4 litres bucket has 2 liter in it.

step 7

pour water from 7 liter bucket in 4 litre bucket which has already 2 litre in it

output: 7 litre bucket has 5 litres and 4 litres bucket has 4 liter in it.

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4 years ago

Find A and D for the function f(x)= a cos(x) + d such that the graph of f matches the figure.

Brrunno [24]

Using sinusoidal function concepts, it is found that the values are A = 2 and D = 2.

<h3>What is a sinusoidal function?</h3>

The cosine function, with standard period, is represented by:

$y = A\cos{x} + D$

In which:

$2A$ is the amplitude, which is the difference between the largest and smallest value.

D is the vertical shift, considering that the standard cosine function has range between -A and A.

In this problem, the amplitude is of 4 - 0 = 4, hence:

$2A = 4$

$A = \frac{4}{2}$

$A = 2$

The standard function has range between -2 and 2, in this problem it is between 0 and 4, hence the vertical shift up is of 2 units, that is, D = 2.

You can learn more about sinusoidal function concepts at brainly.com/question/26131720

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3 years ago