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zaharov [31]
3 years ago
9

Can you please help me!!

Mathematics
1 answer:
Molodets [167]3 years ago
8 0
A is more because 1/4 is equal to 2/8 and 2/8 is less than 7/8 so you would have more than a minute
B is three minutes 2/8 goes into 7/8 three times
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15) If a curve intersects x -axis at (2,0) and (-2,0) then zeroes of a polynomial are
deff fn [24]

Answer:

2\ and\ -2

Step-by-step explanation:

If a polynomial intersects the x-axis at (2,0) and (-2,0)

Then the zeroes are at x=2 and x=-2

(Outside of the question)

To find factors using the zeroes, we must have one side of the equation equal to zero.

x=2

x-2=0

factor (x-2)

x=-2

x+2=0

factor (x+2)

5 0
3 years ago
The minute hand of a clock is 8 inches long. How far does the tip of the minute hand move in 30 minutes? How far does it move in
Brrunno [24]

Answer:

In 30 minutes:

The minute hand moves a distance of 25.13 inches

In 20 minutes:

The minute hand moves a distance of 16.76 inches

Step-by-step explanation:

When 60 minutes are completed, the minute hand of the relog makes a complete revolution. The distance s that the minute hand travels when making a complete revolution is:

s = 2\pi r Where r is the radius of the circumference, and in this case, the radius of the minute hand.

So:

s = 16 \pi

s = 50.27 inches.

In 30 minutes (which is half of 60) the minute hand covers only half a revolution. Then the distance traveled in 30 minutes is \frac{1}{2}(s) = 25.13 inches

In 20 minutes (which is one third of 60) the minute hand only travels a third of a complete revolution. Then the distance traveled in 20 minutes is \frac{1}{3}(s) = 16.76 inches

3 0
3 years ago
The area of a rectangular wall of a barn is 100 square feet. It’s length is 10 feet longer than twice it’s width. Find the lengt
lapo4ka [179]

Answer:

The length would be 30 and the width would be 20

Step-by-step explanation:

For the purpose of this, we'll set the width as x. We can then define the length as x + 10 since we know it is 10 ft longer than the width. Now we can use those along with the perimeter formula to solve for the width.

P = 2l + 2w

100 = 2(x + 10) + 2(x)

100 = 2x + 20 + 2x

100 = 4x + 20

80 = 4x

20 = x

Now since we know that the width is 20ft, we can add 10ft to it to get the length, which would be 30ft.

5 0
3 years ago
The graph of the function f(x) = –(x + 3)(x – 1) is shown below. On a coordinate plane, a parabola opens down. It goes through (
Mashcka [7]

Answer:

The Domain is "All Real numbers", and the Range is "All real number less than or equal to 4" which coincides with option C in your problem.

Step-by-step explanation:

Recall that the Domain of a function is the set of all x-values for which there is a y-value obtained by the rule defined by the function.

In this case, whatever real number you enter for "x" in your functional expression, you will find another real value "y". That means that the actual Domain of your function is the full Real number line (all Real numbers).

Recall as well that the Range of a function is the set of y-values that are being "called" (or generated) as you use all the values for x in the Domain. In our case, it is great that they give the graph of the function (see attached image), so you can visualize that the function's graph is that of a "parabola" with branches opening downwards. You can see as well that the parabola presents a maximum value when x = -1, that means that any other value of x you use cannot give you as result a y-value that goes above that maximum.

If you evaluate that maximum value of the vertical coordinate by replacing "x" with "-1" in the actual function, you get:

f(x)=-(x+3)*(x-1)\\f(-1)=-(-1+3)*(-1-1)\\f(-1)=-(2)*(-2)\\f(-1)=4

That means that the maximum y-value one can get from this function is "4". That is, the actual Range of the function can be any number that is smaller or equal to 4.

Bottom line: The Domain is "All Real numbers", and the Range is "All real number less than or equal to 4".

5 0
3 years ago
Read 2 more answers
100=6e12.77x Solve for x
weeeeeb [17]
X=0.480135, hope this helps
6 0
3 years ago
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