3 years ago

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Mathematics

1 answer:

aliya0001 [1]3 years ago

5 0

91.125 is the answer

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If the average speed of a garden snail is 0.025 miles per hour and one inch is approximately 2.54 centimeters, how many minutes

Katen [24]

Answer:

Option B 1.5 min

Step-by-step explanation:

we know that

1 mi=1,609.36 m

1 h=60 min

$0.025\ mi/h=0.025(1,609.36)/60=0.67\ m/min$

using proportion

$\frac{0.67}{1}\frac{m}{min} = \frac{1}{x}\frac{m}{min}\\\\x=1/0.67\\\\x=1.5\ min$

8 0

3 years ago

Two variable quantities A and B are found to be related by the equation A^3 + B^3 = 9. What is the rate of change dA/dt at the m

Amanda [17]

3A^2 dA/dt + 3B^2 dB/dt = 0

If A=2, then 8+B^3=9, B=1

12 dA/dt + 9 = 0

dA/dt = -3/4

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3 years ago

what score must a student make on an algebra test to have an average score of 90 for the grading period. If his other test score

Alborosie

At least a 96 is needed for a 90

5 0

3 years ago

the admission fee at an amusement park is $3.50 for children and $7.20 for adults. on a certain day, 344 people entered the park

snow_lady [41]

Answer:

180 adults, 164 children

Step-by-step explanation:

Assuming all the people admitted are children,

total fees collected

= 344($3.50)

= $1204

Difference in amount collected

= $1870 -$1204

= $666

This difference in amount is due to the extra cost from each adult admission fee that we assumed to be children.

Difference in each admission fee

= $7.20 -$3.50

= $3.70

Number of adults admitted

= $666 ÷$3.70

= 180

Number of children admitted

= 344 -180

= 164

4 0

3 years ago

Question 13 <br>y = - X + X^2

ankoles [38]

We have the following function that is a quadratic function:

$y=-x+x^2$

So the graph of this function is shown in the figure below. This is a parabola as you can see. The roots of this functions, that is, the x-intercepts are:

$y=-x+x^2 \\ y=x(x-1) \\ \\ x_{1}=0 \ and \ x_{2}=1$

As you can see in the figure. This function decreases from $(-\infty,0.5)$ and increases from $(0.5, \infty)$

Finally, it is important to note that the vertex is the point:

$V(0.5,-0.25)$

The answer is the second graph.

3 0

3 years ago