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Hitman42 [59]
3 years ago
13

If a/b >c/d are both positive fractions, do we have ad > bc? If so, why?

Mathematics
1 answer:
Helen [10]3 years ago
3 0

Answer:  NO. if a/b > c/d,   a/d is not greater than b/c

Step-by-step explanation:   The the larger the number in the denominator, the smaller its value as it is represents fractional value, not a whole number. So when a "small" numerator is moved to a denominator, it increases in size, and the large number in the numerator moved to a denominator decreases in size.  

Moving the denominator from a smaller fraction to the left side will diminish the value of the new fraction.

3/4 > 1/2  but 3/2 < 4/1

7/8 > 5/6 but  7/6 < 8/5

1/2 > 1/4  but   1/4 < 2/1  

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Evaluate -Z + 7.49 for Z = -7.1
luda_lava [24]
14.59

To solve, simply plug -7.1 into -Z. Since Z is negative in the equation, it will turn the Z that’s given to us into a negative. Since that Z is already negative, it will now become a positive since that’s what two negatives being multiplied make. This is what your problem will look like:

-(-7.1) + 7.49
7.1 + 7.49 = 14.59
3 0
3 years ago
Evaluate f(x) = 2|x – 5| for f(–5) and f(0).
Elanso [62]

Answer:

f(–5) = 20, f(0) = 10

Step-by-step explanation:

f(-5):

f(-5) = 2|-5 -5|

f(-5) = 2|-10|

f(-5) = 2(10)

f(-5) = 20

f(0):

f(0) = 2|0 - 5|

f(0) = 2|-5|

f(0) = 2(5)

f(0) = 10

7 0
3 years ago
8 classmates share 4 pizzas each person receive 4 eights right<br> ...?
Jet001 [13]
For the given question above, if you divide the 4 pizzas up between the 8 people you get the fraction 4/8. So this is TRUE.
<span>You then reduce the fraction by a common factor (in this case 2), giving you 1/2. </span><span>So each person gets 1/2 of a pizza. </span>
6 0
3 years ago
Anthony wrote 52.066 as the standard form for fifty-two and sixty-six hundredths. Is he correct? Explain.​
aleksley [76]

Answer:

That's incorrect. He wrote the form for fifty-two and sixty-six thousandths. The correct number is 52.66.

7 0
2 years ago
Describe in words the region of R3 reperesented by the equations or inequalities x2+y2=4,z=-1
Roman55 [17]

Answer:

It represents a circle of radius 2, centered in the origin of the plane xy and transversal to the z-axis in z=-1.

Step-by-step explanation:

The first thing to notice is that

x^2+y^2=2^2

<u>represents a circle of radius 2</u>, with its center in the origin of a plane xy, of cartesians coordinates.

Starting from here, we have to put the coordinate z, to complete the space R³. <em>Then, the cirlce will "live" into the plane xy, where z=-1</em>.

Finally, we have that this region is a circle of radius 2, centered in the origin of the plane xy, and transversal to z=-1.

8 0
3 years ago
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