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2 years ago

(5g2+6g-10) -(6b2+2g+9)

Mathematics

1 answer:

schepotkina [342]2 years ago

3 0

Answer:

look at given picture

Step-by-step explanation:

there is complete soln

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Please help me ASAP!!!

dalvyx [7]

Answer:

Step-by-step explanation:

8 - 11 = -3 :)

7 0

3 years ago

A parallelogram has a base of length 2x + 1 and a height of x + 3 and has an area of

storchak [24]

Answer:

base 7
height 6

Step-by-step explanation:

Using the given expressions, we can write the area as ...

A = BH

42 = (2x +1)(x +3) = 2x^2 +7x +3

2x ^2 +7x -39 = 0

(x -3)(2x +13) = 0

x = 3 or -6.5 . . . . . these values make the factors be zero

In order for the parallelogram to have positive dimensions, the value of x must be 3. So, the base and height are ...

base = 2(3) +1 = 7

height = 3 +3 = 6

7 0

3 years ago

Read 2 more answers

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

Laurie is moving a dresser with a mass of 250 kg. She does 126 J of work with a force of 14 N. How far does she move the dresser

grandymaker [24]

The main formula is E = sum Work,
or the work is W= FxAB=E
so AB= E/F = 126/ 14 = 9m

7 0

3 years ago

How many square inches will fill a rectangle 6 inches by 2 inches

VARVARA [1.3K]

12 square inches. It's basically asking for the area of the rectangle.

6 0

3 years ago

Read 2 more answers