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2 years ago

Plsssssssss helppppppp

Mathematics

1 answer:

Maurinko [17]2 years ago

5 0

the answer is the third one on the page that is it my dude

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Write a real world problem that you would represent with the equation 4x+5=37.

umka2103 [35]

If there were 37 apples. One of your friends took 5 apples. You divided the leftover apples and gave it to your four friends. How many apples did each of the four friends get?

x=8
37-5=32
32/4=8.

8 0

3 years ago

6ab + a(a – b – 6b) + 4a(2b +a) – ab , para a= -1 e b=2<br><br><br> ME AJUDEM! É URGENTE

Marianna [84]

Answer:

-81

Step-by-step explanation:

replace the numbers you were given in a or b.

6(-12) -1(-1 – 2 – 6(2)) + 4(-1)(2(2) -1) -12

6 0

3 years ago

Can anyone help me with this problem PLEASE??????

Vesna [10]

A) Volume = l * w* h --> V = 7 * 5 * 4 --> V = 140 units³

B) 140 units³: Prism B has the same length, width, and height as A, just rotated.

C) As long as the tree numbers' product is 140 units³, it works.

Prism C: 140 * 1 * 1

Prism D: 14 * 2 * 5

7 0

3 years ago

A large tank is filled to capacity with 600 gallons of pure water. brine containing 4 pounds of salt per gallon is pumped into t

nignag [31]

If $A(t)$ is the amount of salt in the tank at time $t$ , then the rate at which the amount of salt in the tank changes is given by

$\dfrac{\mathrm dA(t)}{\mathrm dt}=\dfrac{4\text{ lbs}}{1\text{ gal}}\dfrac{6\text{ gal}}{1\text{ min}}-\dfrac{A(t)\text{ lbs}}{600\text{ gal}}\dfrac{6\text{ gal}}{1\text{ min}}$
$\dfrac{\mathrm dA}{\mathrm dt}=24\dfrac{\text{lb}}{\text{min}}-\dfrac{A(t)}{100}\dfrac{\text{lb}}{\text{min}}$

Let's drop the units for now. We have

$\dfrac{\mathrm dA(t)}{\mathrm dt}+\dfrac{A(t)}{100}=24$
$e^{t/100}\dfrac{\mathrm dA(t)}{\mathrm dt}+e^{t/100}\dfrac{A(t)}{100}=24e^{t/100}$
$\dfrac{\mathrm d}{\mathrm dt}\left[e^{t/100}A(t)\right]=24e^{t/100}$
$e^{t/100}A(t)=\displaystyle24\int e^{t/100}\,\mathrm dt$
$e^{t/100}A(t)=2400e^{t/100}+C$
$A(t)=2400+Ce^{-t/100}$

We're given that the water is pure at the start, so $A(0)=0$ , giving

$A(0)=0=2400+Ce^{-0/100}\implies C=-2400$

So the amount of salt in the tank (in lbs) at time $t$ is

$A(t)=2400\left(1-e^{-t/100}\right)$

4 0

3 years ago

Manuel bought 9 pounds of apples. He has eaten three fourths of a pound so far and has $15 worth of apples left. Write and solv

leonid [27]

8.25x= 15 so.... 15/8.25=x so.... 1.81~=x so.... To the nearest dollar it 2$/lb

8 0

3 years ago

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