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3 years ago

What is the value of the expression 2 x 2 + 3 x y - Y 2 when x equals 2 and Y equals negative 4

Mathematics

1 answer:

professor190 [17]3 years ago

4 0

12.66382829 this is the answer i got

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An 12-ounce bottle of orange juice costs $2.64. What is the cost of the orange juice per ounce?

8_murik_8 [283]

Answer:

22 cents per ounce

Step-by-step explanation:

3 0

3 years ago

Graph the function and select the y-intercept y = 2 • 3^x a. 1 b. 2 c. 3 d. 4

kozerog [31]

Answer:

For the graph see attached image.

The y-intercept is 2

Step-by-step explanation:

The requested graph of the function is included in the attached image.

The y-intercept can be seen from the image, but also from finding the y-value when x= 0 (zero):

$y=2\,\,\,3^x\\y=2\,\,\,3^0\\y = 2 \,\,\,(1)\\y = 2$

8 0

3 years ago

A leprechaun places a magic penny under a girl's pillow. The next night there are 2 magic pennies under her pillow. The followi

Mars2501 [29]

Answer:

36 days

Step-by-step explanation:

Since the pennies need to be kept under the pillow in order to be doubled, we're really looking for the day the girl will wake up with 21 billions pennies under her pillow.

The general formula of that geometric sequence will be: t = 1 + 2^(n-1)

We need to find the value of n when t will be over 21,000,000,000.

So, the equation becomes:

21,000,000,001 = 1 + 2^(n-1)

2^(n-1) = 21,000,000,000

log(2^(n-1)) = log(21,000,000,000)

(n-1) * log(2) = log(21,000,000,000)

n-1 = log(21,000,000,000) / log(2)

n-1 = 34.29

n = 35.29

Since it has to be complete days, and we have to reach over 21 billions, then we round it up to 36.

5 0

3 years ago

PLEASEEE HELP What is the solution to the equation represented by the model below?

Sauron [17]

Answer:

C) x=2

$3x+8=4x+6$

$8-6=4x-3x$

$x=2$

~OAmalOHopeO

8 0

3 years ago

Read 2 more answers

What is the perimeter of the polygon to the nearest tenth of a unit? (See attachment)

8_murik_8 [283]

(-2,-2),(3,-3) ....distance = sqrt 26 = 5.099
(3,-3),(4,-6)......distance = sqrt 10 = 3.162
(4,-6),(1,-6)......distance = sqrt 9 = 3
(1,-6),(2,-4).....distance = sqrt 5 = 2.236
(-2,-4),(-2,-2)...distance = sqrt 20 = 4.472

perimeter is all the sides added together....... = 17.969 = 17.9 units

** I used a distance formula calculator to calculate the distances between each point....just to let u know how I did this

4 0

3 years ago