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2 years ago

Marjory practiced the piano for 12 minutes. How many seconds did she practice?

Mathematics

2 answers:

Lorico [155]2 years ago

5 0

Answer:
720 sec
Step-by-step explanation:
In 1 Min=60sec
so 12×60=720
good night

butalik [34]2 years ago

4 0

Answer : 720 Seconds

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80 percent of x is equal to 100<br><br> What is x?

Stella [2.4K]

Answer:

125

Step-by-step explanation:

$80\% \: of \: x = 100 \\ \\ 0.8x = 100 \\ \\ x = \frac{100}{0.8} \\ \\ x = 125$

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2 years ago

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Suppose the wholesale price of a certain brand of medium-sized eggs p (in dollars/carton) is related to the weekly supply x (in

Mrrafil [7]

Answer:

1300

Step-by-step explanation:

We are given

x = 35

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We want to find $\frac{dx}{dt}$ , which is the rate at which supply is changing.

First, we need to implicitly differentiate the equation given:

$625p^2-x^2=100\\1250p\frac{dp}{dt}-2x\frac{dx}{dt}=0$

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$625p^2 - x^2 =100\\625p^2 - (35)^2 =100\\625p^2=1325\\p=1.46$

Now, find dx/dt:

$1250(1.46)(-0.05)-2(35)\frac{dx}{dt}=0\\-91.25-70\frac{dx}{dt}=0\\\frac{dx}{dt}=-1.30$

In thousands, 1.30 * 1000 = 1300 cartons per week decrease

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3 years ago

There are 16 entrees available at a restaurant. From these, Archie is to choose 6 for his party. How many groups of 6 entrees ca

Vikki [24]

Answer:

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Step-by-step explanation:

This is the selection of 6 elements out of 16 elements. Applying the combination formula, the total number of selections is nCr with n =16 and r =6.

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3 years ago

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Answer:

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Step-by-step explanation:

To find the slope of the given line, slope is the rise divided by the run of a line.

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Picking points (4, 18) and (8, 12)

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y₁ = 18

x₂ = 8

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3 years ago

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Alekssandra [29.7K]

Answer:

your choice is correct

Step-by-step explanation:

f(x) = x^2 does not pass the horizontal line test (a horizontal line intersects its graph in two places), so its inverse does not pass the vertical line test. The inverse is not a function.

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Comment on the graph

The original function f(x)=x^2 is shown by the red curve. Its reflection across the orange dashed line y=x gives the inverse relation, in blue. The black horizontal and vertical lines show the multiple points of intersection with the curves, indicating the inverse relation is not a function.

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3 years ago