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topjm [15]
3 years ago
5

Which statement is not always true?

Mathematics
1 answer:
Dafna1 [17]3 years ago
6 0
Which statement is not always true?(1) The product of two irrational numbers is irrational.
(2) The product of two rational numbers is rational.
(3) The sum of two rational numbers is rational.
(4) The sum of a rational number and an irrational number is irrational.
The statement that is not always true is the <span>sum of two rational numbers is rational. The answer is number 3.</span>
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F(x) = 4x^2+2x+6 what is the discriminant of f? How many distinct real number zeros does f have?
Sunny_sXe [5.5K]

Answer:

The discriminant of f is 92, and it has no real zeros

Step-by-step explanation:

The discriminant of a quadratic is b^2-4ac, where the quadratic is in the form ax^2+bx+c. The discriminant of this one is therefore:

2^2-4(4)(6)=4-96=-92

Since the square root of a negative number is imaginary, this quadratic has no real number zeros. Hope this helps!

8 0
3 years ago
If someone could help me with this entire back side that would be great :)
SpyIntel [72]

Answer:

A.)x/8=3/4

x=6

B.)2/5=x/40

x=16

C.)1/8=x/12

x=3/2 or 1.5 or 1 1/2

D.)x/10=12/15

x=8

A.)x/2+x/6=7

x=21/2 or 10.5 or 10 1/2

B.)x/9+2x/2=1/3

x=3/10 or 0.3

3 0
3 years ago
Read 2 more answers
A machine wheel spins at a rate of 500 revolutions per minute. If the wheel has a diameter of 80 centimeters, what is the angula
solmaris [256]

Answer: 3,140 radians per minute.

Step-by-step explanation:

We know that the wheel does 500 revolutions per minute.

This is called the frequency of the wheel, and this is written as:

f = 500 rev/min = 500 RPM

The angular speed (or Angular velocity) is written as

ω = 2*pi*f

And this quantity is in radians/unit of time.

where pi = 3.14

then:

ω = 2*3.14*500 (rev/min)*(rad/rev) = 3,140 rad/min

This means that the angular velocity  (or angular speed) is 3,140 radians per minute.

8 0
3 years ago
Read 2 more answers
If 1/4c = 1/2d = 4e = 8, what is the value of c + d + e?
Natali5045456 [20]

Answer:c=1/32 d=1/16 e=2

C+d+e=1/32+1/16+2=35/16

Step-by-step explanation:

Solve for c

1/4c =8

C=1/32

1/2d=8

d=1/16

4e=8

e=2

6 0
3 years ago
I need to sketch a graph for each line.<br> y = 4x-5<br><br> How would I solve and graph this
PtichkaEL [24]
So you need to find the slope and the y- intercept. So, the slope is always the coefficient on the x. In this case it is 4. The y-intercept is the other number. In this case it is -5. So the slope is 4 and the y-intercept is -5. On your graph (the y axis) find -5. Then you go up 4 and to the right 1 because of four were a fraction it would be 4/1. Keep going up four and right one a couple times. Then reverse it. Go down 4 left 1. That as a fraction would look like -4/-1. Then connect your points and make it a line!
4 0
3 years ago
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