Y= -4+9
A.(3,-3)
B.(2,3)
C.(0,9)
D.(2,1)
E.(4,5)

Answer:

y=3x-15

Step-by-step explanation:

y-y1=m(x-x1)

y-9=3(x-8)

y=3x-24+9

y=3x-15

Answer:

C. Biased, because she only asked students on honor roll.

Step-by-step explanation:

Since Mrs. Gilbert's goal was to find how many students that spent >4 hours and not how many students that earned Honor Roll that spent >4 hours, the data is biased. Choose C.

Answer:

Answer:

Infinite solutions

Step-by-step explanation:

1) First, you can solve this easily by elimination. Multiply the first equation by -2 in order to cancel out terms when adding to the second equation.

2) Then, add the new set of equations together. However, everything cancels out, bringing us to 0 = 0. This means that the lines the equations make must be the same. Thus, all real numbers must make this equation true, meaning that there are infinite solutions.

Step-by-step explanation:

3x + 2y = 4

2y = -3x +4

y = -3/2x +2

6x+4y = 8

4y = -6x +8

y = -6/4x + 8

y = -3/2x + 8

same slope, bit different intercepts. they are parallel. no solutions

Answer: 3x=60

Step-by-step explanation:

12x-20=10x+20

X=20

3(20)= 60

Answer:

y=1 x=15

Step-by-step explanation:

Answer:

x=15, y=1

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

x + 2y = 2 + 2(1)

          = 2 + 2

          = 4

Answer:

825 g

Step-by-step explanation:

Here's my work:

500g Cl2 l   1mol Cl2  l  2 mol NaCl   l  58.5 g NaCl

                l   71 g Cl2    l  1 mol Cl2      l    1 mol NaCl  

= 823.94  - the rounding can be a little off

The first thing you have to do is convert the 500 g of Cl2 into moles.  So you get the mass of Cl which is 35.5, but Cl is diatomic by itself so you multiply 35.5 x 2 and get 71.   now on the third column you are comparing the mol ratios of the equation.  The equation is 2Na + Cl2 ---> 2NaCl, so you see that there is no coefficient in front of Cl2 so that means there is 1 mol, and then you see that in the product there is a  coefficient of 2 in front of NaCl so that means there is 2 moles.  Then finally you have to convert the moles backs into grams where you just add the masses of Na and Cl .  You multiply across the top  and then divide that number by the bottom row.

Answer:

Draw a line segment, say 5 cm long.

Below it draw a line segment 10 cm long, or whatever is twice the length!

Hope that helps!

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

Answer and Step-by-step explanation:

Alot of these can be solved with the table up above the problems.

According to the table, every time a value has an exponent of 0, it would equal to 1. Since all A B and C values follow the 0 exponent, their value is 1.

According to the table, when we have a negative exponent, the number gets turned into a fraction of [tex]\frac{1}{x^x}[/tex]

Since our value is 9^-2, do as followed :

[tex]\frac{1}{9^2}[/tex]

Solve what is 9^2 :

[tex][\frac{1}{81} ][/tex]

[tex]\frac{1}{x^{-5} }[/tex]

This question is different, since we have to go backwards, we have to switch the negative exponent to a positive exponent and rid the fraction.

[tex]x^5[/tex]

[tex]5a^3b^{-2}[/tex]

Since we have one negative exponent, follow the fraction rule but instead of having one as the numerator, have 5a^3.

[tex]\frac{5a^3}{b^{2}}[/tex]

[tex]-3^4 = -3*-3*-3*-3=-81[/tex]

Since -3 is in parenthesis, we can rid the negative along with the parenthesis :

[tex](-3)^4=3^4=3*3*3=81[/tex]

Follow the negative exponent rule :

[tex](-3)^{-4}=\frac{1}{(-3)^4} =\frac{1}{3^4} =\frac{1}{3*3*3*3}= \frac{1}{81}[/tex]

Follow the negative exponent rule yet again :

[tex]-3^{-4}=-\frac{1}{3^4} =-\frac{1}{3*3*3*3} =-\frac{1}{81}[/tex]

Answer:

H > 2.5

Step-by-step explanation:

Greater = >

Lessthan = <

Equal = =

Answer:

8x + 4

Step-by-step explanation:

Simplified

group like terms: (+5x + 1X + 2x) = 8x (-4 + 8) = 4 add the positive sign so you can get an equation: +4, so your simplified expression would be 8x + 4

Answer:

$9100

Step-by-step explanation:

Cost price = 100/(100-loss%)* Selling price

CP = 100(100-93)*637

CP = 100/7*637

CP = $9100

Answer:

Step-by-step explanation:

Answer:x = 14

My Step-by-step explanation:

Turn the problem around by switching around the division:

238/x=17 means 238/17=x so x = 14.

Answer: 0 = − 2, Is the answer I think. Sorry if it's wrong.