The minute hand of a clock moves from 3 o'clock to 6 o'clock, or 1/4 of a complete revolution. Through how many degrees does it move?

Answers

Answer 1

Answer: A full revolution is equal to 360 degrees. Thus, rotating a quarter of a full revolution would put it at 360/4 = 90 degrees.

Answer 2

Answer: Well, there's 360 degrees in a full circle.
If the hand moves 1/4 of a complete revolution, divide 360 by 4.

$360/4=90$

The minute hand moved 90 degrees.

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15x—3y=12
Y=5x—4

4x—y=-4
-8x+2y=2

Answers

15x-3y=12
y=5x—4
I'm also not sure what your question is, but this is what I got by solving it like a regular equation.

15x-3(5x-4)=12
15x-15x+12=12
0=12-12
0=0

4x-y=-4
-8x+2y=2

-y=-4-4x /: (-1)
y=4+4x

-8x+2y=2
-8x+2(4+4x)=2
-8x+8+8x=2
0=-6

The height of a ball when it is thrown into the air is shown by equation h = −16t2 + 20t + 3, where h is the height of the ball and t is time in seconds since the ball was released.A or B?
A.
linear model
B.
nonlinear model

Answers

From

h = -16t² + 20t + 3

This is a quadratic equation, it is degree 2 equation.

A degree 1 equation is a linear equation or model.

Any degree greater than 1, as 2 is a non linear.

So h = -16t² + 20t + 3, is a non linear model.

It is B.

I hope this helped.

Hello,

a quadratic equation is not a linear model.

How to round 45 grams to the nearest 10 grams

Answers

So,

We need to round 45g to the nearest 10g's.

Look at the number in the one's place. If the number is greater than or equal to 5, round up. If the number is less than 5, round down.

45g rounded to the nearest ten is 50g.

Which statement is true about the equation fraction 3 over 4z − fraction 1 over 4z + 1 = fraction 2 over 4z + 1?It has no solution.
It has one solution.
It has two solutions.
It has infinitely many solutions.

Answers

Answer:

It has no solution.

Step-by-step explanation:

I just did the test and got this right (as a matter of fact, I got 100% ^^)

It has no solution because no matter how much you multiply the two fractions to the left, it will always equal to 1/2, and 2/4, no matter how many times you multiply it, will always equal to 1/2 as well. Therefore, since those two cancel out, and the leftover numbers in the equation aren't the same, there is no possible solution for this equation.

The solution is Option A.

The equation has no solutions

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

( 3/4z ) - ( 1/(4z+1 ) ) = 2/ (4z + 1 ) be equation (1)

Adding ( 1/(4z+1 ) ) on both sides of the equation , we get

( 3/4z ) = ( 2 + 1 ) / (4z + 1 )

On further simplification , we get

( 3/4z ) = 3/(4z + 1 )

Divide by 3 on both sides of the equation , we get

1/4z = 1/( 4z+1 )

Taking reciprocals on both sides of the equation , we get

4z = 4z + 1

Subtracting 4z on both sides of the equation , we get

1 ≠ 0

Hence , the equation has no solutions

To learn more about equations click :

brainly.com/question/19297665

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What is the completely factored form of f(x) = 6x3 – 13x2 – 4x + 15?(x + 1)(6x2 – 19x + 15)
(x + 1)2(2x – 3)
(x + 1)(3x – 2)(5x – 3)
(x + 1)(2x – 3)(3x – 5)