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8th grade math

Answer:

Because when your finding a point on the x line going left goes towards the negative side, like a number line. So for the y line think of it like the number line but going up is positive and going down is negative.

so if we wanted to go right 6 units and down 3 units it would written as:

(x+6,y-3) Because going right on the x line is like adding 6 units and going down on the y line is like subtracting 3 units for this example

Step-by-step explanation:

Answer:

(1)-5x    (2)-3x and 0x

Step-by-step explanation:

(1)  -7x-2y=5

    -7x-12=5

(2)  y=-8x+5=-3x

     y=-5x+5=0x

Answer: i canot make a graph but i will do how many caloris were burned ever minute

Step-by-step explanation:

Answer:

C. Greater than.

Step-by-step explanation:

Answer:

greater than

      OR

       C.

Answer:

=

Step-by-step explanation:

After the decimal point if the zeros are on the right side they do not have any value.

Answer: = because 0 has no value

Complete the statement with the appropriate symbol.

1.42 ___=__ 1.420

>

<

=

Step-by-step explanation: = because the 0 has no value.

Answer:

d. -2x²+3x-7

Step-by-step explanation:

Standard form is: Ax²+Bx+C

Answer:

Well 180 divided by 15 is 12 so that said there would be 12 floors

So

1 floor 15

2 floor  30

3 floor  45

4 floor 60

5 floor  75

6 floor 90

7 floor  105

8 floor 120

9 floor 135

10 floor  150

11 floor  165

12 floor 180

Hope that helps

Step-by-step explanation:

A line graph, or a number line, has the numbers on different points along the graph. It's a little hard to explain since I can't draw one, but for x>=6, jut plot 6 on the number line as normal. Then since it could be equal to six, put a closed  circle (if it wasn't equal to then it would be an open circle).

Now since x is greater than, draw an arrow to the right (since the numbers increase the farther right you go). The follow the same idea for the other one.

Answer:

Look at the Picture.

Step-by-step explanation:

*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^

Since the greater than sign is used, the circle will be filled in.

Since x is greater than the number, the line arrow will go in the direction of the number that is greater than it.

*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^

#teamtrees #WAP (Water And Plant)

Answer:

$3400

Step-by-step explanation:

800+(26x100)

Answer:

12

Step-by-step explanation:

4-2x=-18

-4        -4

-2x=-24

-2      -2

x=12

Answer:

X-4\y+2=5 + -34(987)=10,111

Step-by-step explanation:

Add that at the top plus your answer you got then you got it

Answer:

-6

Step-by-step explanation:

Using PEMDAS , division comes first.  

4 ÷ 2 - 8

= 2 - 8

= -6

Answer:

We accept with 99 % of confidence that p₁ ( the proportion in the group aged 18 - 34 ) is bigger than p₂ (the proportion in the group aged 35-44)

Step-by-step explanation:

Group aged  18 - 34

Sample size n₁  =  655  sample size enough to apply a normal distribution aproximation for the test

p₁ = 0,45      and   q₁ =  1 - p₁      q₁ = 0,55

p₁*n₁  =  0,45*655 = 294     q₁*n₁  = 0,55*655 = 360

both bigger than 5

p₁  = 45 %     or     p₁  = 0,45          then  q₁  = 1 - 0,45    q₁ = 0,55

Group aged 35 - 44

Sample size  n₂  =  420 sample size enough to apply a normal distribution aproximation for the test

p₂  =  37%   p₂ = 0,37     and    q₂  = 0,63

p₂*n₂  =  0, 37*420 =  155     q₁*n₁  = 0,63*420 = 264

Test Hypothesis

Null Hypothesis        H₀                                             p₁  =  p₂

Alternative Hypothesis Hₐ                                        p₁  >  p₂

Significance level    α  =  1%   α  = 0,01

Confidence Interval     CI = 99 %

Then   from z table  we find   critical z   z (c )  = 3,1

Calculating   z(s)

z(s)  =  (  p₁ - p₂ )/ √[ ( p₁*q₁)/n₁ ] + [ (p₂*q₂)/n₂ ]

z(s ) = (0,45 - 0,37 ) /  √ 0,45*0,55)/655  +  0,37*0,63 /420

z(s)  = 0,08  /0,03

z(s) = 2,66

Comparing  z(s)  and z(c)

z(s) < z(c)

Then z (s) is inside the acceptance region for H₀

Answer:

40

Step-by-step explanation:

8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80

10: 10, 20, 30, 40, 50, 60, 70, 80

Answer:

The temperature in 4 hours = -2 °F

Thus, option (D) is true.

Step-by-step explanation:

We know that the slope-intercept form of the line equation is

[tex]y = mx+b[/tex]

where m is the rate of change or slope and b is the y-intercept

Given that the current temperature outside = 10°F.

Thus, the y-intercept = b = 10°F

Given that as the day went on, It will fall at a constant rate of 3°F per hour.

Thus, the slope or rate of change = -3°F

(The rate of change or slope is -3 because the temperature is reducing)

Thus, the rate of change = slope = m = -3

Thus, substituting m = -3 and b = 10 in the equation

[tex]y = mx+b[/tex]

[tex]y = -3x + 10[/tex]

Now, substituting x = 4 to determine the temperature after 4 hours.

y = -3(4) + 10

y = -12 + 12

y = -2 °F

Therefore, the temperature in 4 hours = -2 °F

Thus, option (D) is true.

Step-by-step explanation:

multiply all the fractions together in your calculator :)

n is equal to the square root of 204

n=[tex]\sqrt{204}[/tex]

n=2[tex]\sqrt{51}[/tex]

Answer:

yes

Step-by-step explanation:

math

Answer:

Step-by-step explanation: use the equation m=(y2-y1/x2-x1)

M=(-5-(-11)/-1-(-8))

M=6/7

Answer:

I think it should be zero

Answer:

7n-10

Step-by-step explanation:

=(5n-3) - (-2n) -7 [Bracket Opens]

=5n - 3 +2n -7 [- × - = +]

=7n - 10 [ addition]

Answer:

2+x=15-7/8x

Step-by-step explanation:

Answer:

Step-by-step explanation: the answer is -136 because you have the follow the steps of pemdas

Answer:

Mk! I will when I get my account back!

Step-by-step explanation:

Answer:

The variable in that expression is x

Answer:

the variable is x!!!!! :))))))))))))

Answer:

Since it is a linear function, it is a directly proportional function

Step-by-step explanation:

i looked it up

9514 1404 393

Answer:

  no

Step-by-step explanation:

An equation representing a proportional relationship looks like ...

  y = kx

where k is the constant of proportionality. A notable feature of this equation is that its y-intercept is zero.

Your expression has a y-intercept of +4, so does not represent a proportion.

_____

Additional comment

Strictly speaking, a proportion is a statement of equality of two ratios. An expression cannot be a proportion. We interpreted your question to be ...

  does y = 3x+4 express a proportional relationship?

Answer: There are 20 years in a score. The year he is talking about is 1776

Step-by-step explanation:

Answer:

graph D.

Step-by-step explanation:

The inequality that is being shown in the question means that the value of x is equal to or greater than 9. Greater values are represented as all of the values to the right of a certain number. On a number line "equal to" is represented by  a closed circle. Therefore, with this knowledge we can see that out of all of the provided options the only one that follows these set of rules would be graph D.

Answer:

$13.50

Step-by-step explanation:

5 bags is 22.50 so 22.50/5 = 4.50 for 1 bag. Multiply that by 3 for 3 bags and get $13.50