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Pachacha [2.7K]
3 years ago
7

Can y’all plz help me ?

Mathematics
1 answer:
crimeas [40]3 years ago
4 0

Answer:

x=-5

Step-by-step explanation

The first box has eight x's and six 1's which means that it would be written as 8x+6

The second box has four x's and fourteen -1's which means that it would be written as 4x-14

You set them equal to one another

8x+6=4x-14

You subtract 4x from both sides

4x+6=-14

Subtract 6 on both sides

4x=-20

Divide 4 on both sides

x=-5

Hope it helps :))

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Which two products can Amir add to find the total number of cupcakes?
Fiesta28 [93]

Answer:

48

All you need to do since this is an array all you need to do is multiply the 2 smaller ones together.

Step-by-step explanation:

Amir made an 8 by 6 array of cupcakes. Then he broke it into two smaller arrays. Which two products can Amir all to find the total number of cupcakes?

7 0
3 years ago
Mr. Ratchett, an elderly American, was found murdered in his train compartment on the Orient Express at 7 AM. When his body was
nasty-shy [4]

Answer: Mr. Ratchett died approximately at 2AM.

Step-by-step explanation: <u>Newton's</u> <u>Law</u> <u>of</u> <u>Cooling</u> shows the cooling rate between a body and the environment, by stating that the rate is proportional to the difference in temperatures between them.

Mathematically, it is represented as:

\frac{dQ}{dt}=\alpha.A.(T_{s}-T)

This differential equation solved, gives the solution:

T(t)=T_{s}+(T_{0}-T_{s})e^{-kt}

where

T_{s} is temperature of the environment

T_{0} is the initial temperature of the body

k is a parameter dependent of heat transfer coefficient, heat capacity and area of the body

t is time required to change the temperature

For the murder on the Orient Express, first determine parameter k.

In 1 hour, Mr. Ratchett's body decrease 1°:

27=22+(28-22)e^{-1k}

5=6e^{-k}

e^{-k}=\frac{5}{6}

ln(e^{-k})=ln(0.834)

k = 0.1823

Using the parameter, find estimate time:

28=22+(37-22)e^{-0.1823t}

6=15e^{-0.1823t}

ln(e^{-0.1823t})=ln(0.4)

0.1823t = 0.9163

t=\frac{0.9163}{0.1823}

t ≈ 5 hours

The body was found at 7AM. So, it took approximately 5 hours to cool down to 28° at that time. Therefore, Mr. Ratchett died at 2AM.

5 0
3 years ago
jose brought 2 movie tickets and a box of popcorn the popcorn cost $6 and he spend a total of $24 how much did each ticket cost
Leni [432]
Each ticket costs 8 dollars
6 0
2 years ago
Read 2 more answers
Will give brainliest<br> Please help with problem, I don't understand it
Alex787 [66]

Answer:

111.375

Step-by-step explanation:

each triangle are equal to each other, it equals (b x h)/2

good luck and thanks for the brainliest!

6 0
3 years ago
X+7=6x-3 brainliest for best answer
sergejj [24]

Answer:

x =2

Step-by-step explanation:

x + 7 = 6x - 3

7 + 3 = 6x - x

10 = 5x

x = 10 ÷ 5

x = 2

4 0
3 years ago
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