MATHEMATICS HIGH SCHOOL

Which multiplication has a negative answer?A) (-1)(-1)
B) (-1)(-1)(-1)(-1)
C) (-1)(-1)(-1)(-1)(-1)
D) (-1)(-1)(-1)(0)

Answers

Answer 1
Answer: To find out quickly if multiplication will be positive or negative,  count the number of negative signs in each equation. If it comes out even,  it is positive.  If odd, it will come out negative.  Only exception is when 0 is in the mix.  First equation has 2,  therefore is positive because even.  Second has 4,  which is another positive because even.  3rd is 5, which is negative because it is odd and has NO 0.  4th has 0.

C is the answer and I hope this helped.
Answer 2
Answer: The answer is C. because when you multiply,exponents  [-1][-1][-1][-1][-1]. the answer results in the exponent -1.hope i helped

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Point C is on line segment \overline{BD} BD . Given BC=x+4,BC=x+4, CD=5x,CD=5x, and BD=5x+7,BD=5x+7, determine the numerical length of \overline{CD}. CD .

Answers

Answer:

Step-by-step explanation:

Given

Required

Determine CD

Since Point C is on segment BD, then we have

Substitute x + 4 for BC; 5x for CD and 5x + 7 for BD

Collect Like Terms

Multiply both sides by -1

Substitute 3 for x in  

Hence, the length of CD is 15 units

Step-by-step explanation:

Final answer:

To find the length of CD, set BC equal to BD and solve for x. Substitute the value of x into CD to find the numerical length.

Explanation:

To determine the length of CD, we need to find the value of x first. We can do this by setting the expressions for BC and BD equal to each other and solving for x. So, x + 4 = 5x + 7. Solving this equation, we find that x = -1. Now we can substitute this value of x into the expression for CD, giving us CD = 5(-1) = -5. However, since lengths cannot be negative, we take the absolute value to find that the numerical length of CD is 5.

Learn more about Length of Line Segment here:

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(07.04) When 27 times x squared times z all over negative 3 times x squared times z to the sixth power is completely simplified, the exponent on the variable z is _____. Numerical Answers Expected! Answer for Blank 1:

Answers

Answer:

The exponent on variable z is -5

Step-by-step explanation:

(27x^2z)/(-3x^2z^6)

To simplify it we apply property of exponents

a^m / a^n = a^m-n

LEts divide the number first

27/ -3= -9

we have x^2 at the top and bottom . so we cancel it out

(z)/(z^6) =(z^1)/(z^6) =z^(-5)

Now combine all the terms

-9z^-5

The exponent on variable z is -5
The answer is negative 5

A West Coast university statistics professor wishes to determine which surfboard brand delivers consistently longer rides, Channel Island or JS. He recruits two of his students who surf to assist in an experiment, and the student assigned to the Channel Island board is determined by coin flip. The three head out to the beach for an afternoon, with the professor holding up a sign at random times for the respective student to catch the next wave on his board, and the time spent on that wave is recorded. This is repeated until each student has ridden 10 waves. The brand of surfboard in this story is A) the explanatory variable. B) a parameter. C) stratified.D) the response variable. E) blinded.

Answers

Answer:

This is repeated until each student has ridden 10 waves. The brand of surfboard in this story is "the explanatory variable"

Step-by-step explanation:

the explanatory variable otherwise known as the the Independent variable.

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Choose the equation of the horizontal line that passes through the point (1, -5). A.y = -5
B.x = 1
C.y = 1
D.x = -5

Answers

horizontal line is y=something
(x,y)
what is y value?
(1,-5)
y=-5 is answer

A is answer
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A rectangle has a length of 7 and a width of w. What is an expression for the perimeter?

Answers

(7x2)+(2x w). Times 2 because you need each side and the opposite sides are the same size.

Find n.
60/66=n/22
n=_______

Answers

The solution of the equation n / 22 = 60 / 66 will be 20.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The equation is given below.

60 / 66 = n / 22

Simplify the equation, then we have

n / 22 = 60 / 66

n / 22 = 10 / 11

n = 22 x 10 / 11

n = 2 x 10

n = 20

The solution of the equation n / 22 = 60 / 66 will be 20.

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The answer should be 20
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