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3 years ago

Select the true statement for the graph

Mathematics

2 answers:

salantis [7]3 years ago

5 0

Answer:

C srry if wrong

Step-by-step explanation:

AfilCa [17]3 years ago

5 0

It’s c hope I helped

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45min/hour = ___ ft/seconds

emmasim [6.3K]

The answer to your question is 45 miles / 1 hour * 5280 feet / 1 mile * 1 hour / 3660 seconds = 45 * 5280 * 1 / 1 * 1 * 3660 = 2737600 feet / 3660 second = 64.918

6 0

4 years ago

What is the degree of the polynomial given below?<br> F(x) - 2x3 - x2 +5x - 3

Anna71 [15]

Answer:

Step-by-step explanation:

3 is the degree of polynomial $f(x) = -2x^3-x^2+5x-3$

=> Degree of the polynomial is the highest power/exponent contained by the variable in the expression.

6 0

3 years ago

Read 2 more answers

A tank holds 300 gallons of water and 100 pounds of salt. A saline solution with concentration 1 lb salt/gal is added at a rate

Shkiper50 [21]

The amount of salt in the tank changes with rate according to

$Q'(t)=\left(1\dfrac{\rm lb}{\rm gal}\right)\left(4\dfrac{\rm gal}{\rm min}\right)-\left(\dfrac{Q(t)}{300+(4-1)t}\dfrac{\rm lb}{\rm gal}\right)\left(1\dfrac{\rm gal}{\rm min}\right)$

$\implies Q'+\dfrac Q{300+3t}=4$

which is a linear ODE in $Q(t)$ . Multiplying both sides by $(300+3t)^{1/3}$ gives

$(300+3t)^{1/3}Q'+(300+3t)^{-2/3}Q=4(300+3t)^{1/3}$

so that the left side condenses into the derivative of a product,

$\big((300+3t)^{1/3}Q\big)'=4(300+3t)^{1/3}$

Integrate both sides and solve for $Q(t)$ to get

$(300+3t)^{1/3}Q=(300+3t)^{4/3}+C$

$\implies Q(t)=300+3t+C(300+3t)^{-1/3}$

Given that $Q(0)=100$ , we find

$100=300+C\cdot300^{-1/3}\implies C=-200\cdot300^{1/3}$

and we get the particular solution

$Q(t)=300+3t-200\cdot300^{1/3}(300+3t)^{-1/3}$

$\boxed{Q(t)=300+3t-2\cdot100^{4/3}(100+t)^{-1/3}}$

5 0

3 years ago

Which point is on the graph of f(x) = 3 x 5^x?

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

To determine which point lies on the graph, substitute the x-coordinate into f(x) and if the value is equal to the y-coordinate then the point is on the graph

A (15, 1)

f(15) = 3 × $5^{15}$ ≠ 1 ← not on graph