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3 years ago

True or False: (2x2 - 3x) - (4x2 - x) = -2x2 - 2x

Mathematics

2 answers:

tensa zangetsu [6.8K]3 years ago

8 0

Answer:

True??????? I guess

Step-by-step explanation:

Lera25 [3.4K]3 years ago

4 0

Answer

It is true

you just solve for x on the left side first then the same on the right they should be the same

i think this is how i would do it

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Wanda has 8 bananas, 20 oranges, and 12 apples. She wants to put an equal amount of each type of fruit into baskets. What is the

joja [24]

Hey!

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Solution:

Find the Highest Common Factor of 8, 12, and 20.

Highest Common Factor = 4

Divide.

8 / 4 = 2

12 / 4 = 3

20 / 4 = 5

4 symbolizes the amount of baskets there are.

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Answer:

2 banana's per basket.

3 apple's per basket.

5 orange's per basket.

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There is no possible way that there can be the same amount of fruit in each basket.

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Hope This Helped! Good Luck!

5 0

3 years ago

Please hurry! I'm so confused

Varvara68 [4.7K]

Answer:

Step-by-step explanation:

The general equation is

y = 2.49x + 24.99

The number of cones bought is x

The cake cost is 24.99

The total cost is y

===========

So the meaning of (5,37.44) is that she bought 5 cones and 1 cake. Let's just check that out.

Check

y = 2.49*5 + 24.99

y = 12.45 + 24.99

y = 37.44

So the total cost (y) of 5 cones (2.49 each) and 1 cake ($24.99) is 37.44

5 0

3 years ago

Please complete the system of equations.

likoan [24]

Answer:

Step-by-step explanation:

Eliminate the y terms by adding the equations together:

-10y+9x = -9

10y+5x = -5

——————-

14x = -14

x = -1

y = 0

6 0

3 years ago

If a quadrilateral is a rectangle. What are two things that you know about that quadrilateral?

charle [14.2K]

Answer:

Step-by-step explanation:

Rectangle

Opposite sides are equal and parallel
Contains 1 right angle

Rhombus

All sides are equal.
The diagonals bisect each other.

Square

All Sides are equal. Opposite sides are parallel
Contains 1 right angle

7 0

3 years ago

A cold drink is poured out at 52°F. After 2 minutes of sitting in a 72°F room, its temperature has risen to 55°F. Find an equati

I am Lyosha [343]

Answer:

The model for the temperature of the drink can be written as

$T=72-20e^{-0.08t}$

Step-by-step explanation:

For a cold drink in a hotter room, we can say that the rate of change of temperature of the drink is proportional to the difference of temperature between the drink and the room.

We can model that in this way

$\frac{dT}{dt}=k*(T_r-T)$

If we rearrange and integrate

$\int\frac{dT}{(T-Tr)} =-k*\int dt\\\\ln(T-T_r)=-kt+C1\\\\T-T_r=Ce^{-kt}\\\\T=T_r+Ce^{-kt}$

We know that at time 0, the temperature of the drink was 52°F. Then we have:

$T=T_r+Ce^{-kt}\\\\52=72+Ce^0=72+C\\\\C=-20$

We also know that at t=2, T=55°F

$T=T_r+Ce^{-kt}\\\\55=72-20e^{-k*2}\\\\e^{-k*2}=(72-55)/20=0.85\\\\-2k=ln(0.85)=-0.1625\\\\k=0.08$

The model for the temperature of the drink can be written as

$T=72-20e^{-0.08t}$

7 0

4 years ago