MATHEMATICS HIGH SCHOOL

Amir arranged 9 photos on a bulletin board. He put the photos in rows. Each row contains the same number of photos. How many photos could be in each row?

Answers

Answer 1
Answer:

Answer: There will be 3 rows with 3 photos.

Step-by-step explanation:

Since we have given that

Number of photos to be arranged by Amir on a bulletin board = 9

According to question, we have given that each row contains the same number of photos.

Let the number of rows be x

So, the number of photos also be x

So, our equation becomes

x^2=9\n\nx=√(9)\n\nx=3

So, there will be 3 rows with 3 photos.
Answer 2
Answer: three rows of threes 

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The black graph is the graph of y= f(x). Choose the equation for the red graphwhich one: a, b, c, d?

Answers

Answer:

Option C.

Step-by-step explanation:

First, let's define the transformations used here:

We can see that the red graph is shifted horizontally to the right, and that is reflected across the x-axis:

Horizontal shift:

For a general function f(x) an horizontal shift of N units is written as:

g(x) = f(x + N)

where:

If N > 0, the shift is to the left

if N < 0 , the shift is to the right.

Reflection across the x-axis.

For a function f(x), a reflection across the x-axis is just written as:

g(x) = -f(x)

So, if here we have a reflection across the x-axis and a horizontal shift of one unit to the right, we would write the equation for the red graph as:

g(x) = -f(x)     (only for the reflection)

g(x) = -f(x - 1)    (for the reflection and the shift)

Then the graph of the red function is:

y = -f(x - 1)

We can rewrite this as:

y = -1*f(x - 1)

dividing both sides by -1 we get:

y/-1 = f(x - 1)

This is what we can see in option C, so the correct option is C.

Express the complex number in trigonometric form.

-4i

Answers

Answer:

-4i =  4(cos 270 +i sin 270)

Step-by-step explanation:

We have a+ib = r(cosθ+isinθ)

r=√(a^2+b^2)\texttt{ and }tan\theta =(b)/(a)

Here a = 0  and b = -4

Substituting

       r=√(0^2+(-4)^2)\n\nr=4\n\ntan\theta =(-4)/(0)\n\n\theta =270^0\texttt{(Since a is zero and b is negative)}

-4i =  4(cos 270 +i sin 270)

Which statement is true about the lengths of the sides?Each side has a different length,
Two sides have the same length, which is less than
the length of the third side.
The three sides have the same length.
The sum of the lengths of two sides is equal to the
length of the third side.

Answers

Answer:

The three sides have the same length.

Step-by-step explanation:

Answer:

B. Two sides have the same length, which is less than the length of the third side.

Step-by-step explanation:

I think,  :-P

By exercising regularly, Abby was able to improve her running right this year. Last year, Abby ran a mile in 12 minutes. This year she could run a mile in 10 minutes. By what percent did Abby decrease her running time?

Answers

Answer:

She decreased her running time at a rate of 16.67%

Step-by-step explanation:

In this question, we are asked basically to calculate the percentage decrease in Abby’s running time.

Mathematically, the percentage decrease equals: (new running time - old running time)/old running time * 100%

We input the values and proceed as follows:

Percentage decrease = (10-12)/12 * 100

-2/12 * 100/1 = -1/6 * 100 = -16.67%

Since it’s a decrease, we just simply say that her running time decrease by 16.67%

Which numbers belong to the solution set of inequality 9x>117

Answers

Hello Nancy

9x>117

Divide both sides by 9

9x/9>117/9

x>13


I hope that's help:0

Can anyone answer this PLSSSSSSS I NEED IT!!!

Answers

Answer:

3

Step-by-step explanation:
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