PLS HELP YEAR 8 MATHS

Answer: c-it’s the same price

Step-by-step explanation: 20% off 200 is 160 and 200-160=40 so it’s the same

Answer:

C

(GPD)

Step-by-step explanation:

E D G E 2 0 2 0

Gross domestic product is the economic indicator to measure of all goods and services produced within a given economy in one year

An economic indicator is a statistic about an economic activity. Economic indicators allow analysis of economic performance and predictions of future performance.

We need to find the which economic indicator is the measure of all goods and services produced within a given economy in one year.

A trade deficit occurs when a country imports more than it exports

A trade surplus is an economic measure of a positive balance of trade, where a country's exports exceed its imports.

GDP measures the monetary value of final goods and services—that is, those that are bought by the final user—produced in a country in a given period of time

Hence, gross domestic product is the economic indicator to measure of all goods and services produced within a given economy in one year

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Answer:

a + b = 30

Step-by-step explanation:

If we convert the percentages to decimals (120% = 1.2 & 80% = 0.8), we can use this equation to find B:  1.2A = 0.8b

Since we know a, we then have 1.2 * 12 = 0.8b

Solving for B gives us b = 18

12 + 18 = 30

Answer:

➡Heigth = 4.77in

Step-by-step explanation:

➡Volume = [tex]\pi × r^2[/tex] × H

➡[tex]60 = 3.14 × 2^2 × H[/tex]

➡[tex]60 = 3.14 × 4 × H[/tex]

➡[tex]H = \frac{60}{3.14 × 4} \approx \bf 4.77in[/tex]

I hope this helps!

The graph that best represents the total cost for X months of music would be 15X = Y.

Given that a membership for a music streaming company is $15 per month, to determine which graph best represents y, the total cost for x months of music, the following equation must be performed:

Therefore, the graph that best represents the total cost for X months of music would be 15X = Y.

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Answer:

Step-by-step explanation:

They all give 8r so that is not the distinguishing characteristic.

The first one in column A gives

12r + t - 4r + 6t

12r - 4r + t + 6t

8r + 7t  

This is the third one in column B

2nd one in Column A

12r + 2t - (4r + 10t)               Remove the brackets

12r + 2t - 4r - 10t                  Pay close attention to 10t becoming -10t. The minus sign effects both terms inside the brackets.

12t - 4t + 2t - 10t                  Combine

8r - 8t                                   Now take out the common factor (8)

8(r - t)                                    That's the top one in column B

3rd one in column A

12(r + t) - 6(r +t) + 4(r + t) - 2(r+t)    They all have r+t so r + t is a common factor)

(r+t) [12 - 6 + 4 - 2]                          Combine

(r + t ) [ 8 ]

This is the second one in  column B

The trick here is to look out for common factors. Don't remove the brackets. But it takes a bit of practice before you know that

Answer:

B is the answer in the first quadrant x is positive

Answer:

im not entirely sure if its correct but

A: 384 in.

B: 1040 in. = 86 ft

C: The perimeter for the actual flower bed is converted into feet because the dimensions are multiplied by 26 inches.

The system of equations that model this situation are [tex]h = -16t^{2}+15t +6[/tex] and [tex]h = 3t +10[/tex].

As we know,

Projectile motion formula,

[tex]h = -16t^{2}+vt +h_{0}[/tex].....(1)

Where, t = time since the measuring tape was thrown.

h = height in feet above the ground.

Projectile motion is a form of motion experienced by an object or particle that is projected near the Earth's surface and moves along a curved path under the action of gravity only.

It is given that:

v =15 feet/sec

h₀ = 6 feet

So, (1) will become,

[tex]h = -16t^{2}+15t +6[/tex]

Also, h = distance of worker's arm from the ground + speed of bucket * time(t)

[tex]h = 3t +10[/tex]

Therefore, the system of equations that model this situation are [tex]h = -16t^{2}+15t +6[/tex] and [tex]h = 3t +10[/tex].

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Answer:

A is the answer

The next is also A

Step-by-step explanation:

Proof:

Answer:

I’m not gonna show you a graph but these instructions should help…

For the first equation.
You have

5y = -3x + 15

So we have to put it in y=mx + b format.

We can isolate y.
Divide 5 on both sides.

y = -3/5 x +3

You have your equation right htere.

The y intercept (b) here is 3 following the format y=mx +b

So now you plot a point on (0,3) since thats your Y- intercept, first point of contact on the y axis. Now for the slope. Slope goes by rise / run. Think of it as you get out of bed, you have to get up first before you run off to whatever you do.

Now you can just follow the instructions give, -3/5 is -3 rise and 5 run. Since a -3 rise is going down, we do down since its a negative slope here.
Starting from (0,3) you go down 3 units, then at that point go to the RIGHT 5 units. You should have a plotted point on, (5,0). Now following the postulate, if two lines exists in a plane that a line is created, draw a line using the 2 points from (0,3) to (5,0). (Draw throguh the whole thing, not segment and make sure it fills up the whole coordinate plane)

That is your equation.

For the second equation its the same thing, but this time it’s an inequality.
It’s the same gist and the equation is already simplified due for you!

Start on the y- intercept which is -2, or (0,-2)

Now since it’s a positive slope, because its 1/2, rise 1, run 2. From (0,-2) rise up 1 and then run two units to the RIGHT.
You should end up with, (2, -1)

Construct a line throught he two points (not segment line, fill the whole plane).

Now since its an inequality, we don’t stop there.

It’s a less then sign so when constructed the line that fills the whole plane.

You have to shade the bottom RIGHT of your screen that has a line throguh it.
So basically a line is made though two points and you have the whole plane covered. Shade in the bottom part WITHOUT crossing over the line.

The number closest to 0 is the number whose absolute difference from 0 is the smallest

0.5 is the closest number to 0

The numbers are given as:

–4, 3, 0. 5, 1

Calculate their absolute difference with 0

|-4 - 0| = 4

|3 - 0| = 3

|0.5 - 0| = 0.5

|1 - 0| = 1

The smallest absolute difference is 0.5

Hence, 0.5 is the closest number to 0

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Answer:

A Trinomial expression has 3 terms.

If it has degree 2, then the exponent of the leading term will be 2.

If the leading coefficient is -5, then the leading term will be [tex]-5x^2[/tex]

Written in standard form:  [tex]y=-5x^2+bx+c[/tex]

We are not given any information about the coefficients of the remaining two terms, so we can substitute any values for these:

Therefore, [tex]y=-5x^2+3x+2[/tex]

Note the standard form

Here we have

So

the expression is

The polynomial that is prime is given by Option C: [tex]10x^2 - 4x +3x +6[/tex]

Those polynomials with integer coefficients that cannot be factored further, with factors of lower degree and integer coefficients are called prime polynomial.

(it is necessary that no factors exists having their coefficients are still integers and they're of lower degree)

Checking all the listed polynomials for them being prime or not:

Rewriting it as:

[tex]x^3+3x^2+2x+6 = x^2(x+3) + 2(x+3) = (x^2 + 2)(x+3)[/tex]

shows that this polynomial has factors. Thus, it isn't prime polynomial

Rewriting it as:

[tex]x^3 + 3x^2 -2x -6 = x^2(x+3) -2(x+3) = (x^2-2)(x+3)[/tex]

shows that this polynomial has factors. Thus, it isn't prime polynomial

We can rewrite it as:

[tex]10x^2 -4x + 3x -6 = 10x^2 -x -6 = f(x) \: \rm (say)[/tex]

This polynomial is prime polynomial as it is irreducible in terms of polynomials having their coefficients as integers.

Case 4: [tex]10x^2 -10x + 6x - 6[/tex]

It can be factored as:

[tex]10x(x-1) + 6(x-1) = (x-1)(10x-6)[/tex]

This is not a prime polynomial.

Thus, the polynomial that is prime is given by Option C: [tex]10x^2 - 4x +3x +6[/tex]

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Answer:

The polynomial that is prime is given by Option C:

What are prime polynomials?

Those polynomials with integer coefficients that cannot be factored further, with factors of lower degree and integer coefficients are called prime polynomial.

(it is necessary that no factors exists having their coefficients are still integers and they're of lower degree)

Checking all the listed polynomials for them being prime or not:

Case 1:

Rewriting it as:

shows that this polynomial has factors. Thus, it isn't prime polynomial

Case 2:

Rewriting it as:

shows that this polynomial has factors. Thus, it isn't prime polynomial

Case 3:

We can rewrite it as:

This polynomial is prime polynomial as it is irreducible in terms of polynomials having their coefficients as integers.

Case 4:

It can be factored as:

This is not a prime polynomial.

Thus, the polynomial that is prime is given by Option C:

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Step-by-step explanation:

Answer:

C: -1 and 1/3

Step-by-step explanation:

Answer:

20%

Step-by-step explanation:

To solve, we can calculate how much 1,600,000 is of 8,000,000 as a decimal and then solve from there.

Let's say our missing value is x.

x of 8,000,000 = 1,600,000

"x of something", in this case, can be rephrased as "x * something", so we have

x * 8,000,000 = 1,600,000

divide both sides by 8,000,000 to isolate x

x = 1,600,000/8,000,000 = 0.2

to convert from a decimal to percentage, multiply by 100

0.2 * 100 = 20

20% is our answer

Answer:

14x + 7y= -2

Step-by-step explanation:

y + 2x = -2/7

↓

7y + 14x = -2

↓

14x + 7y = -2

Answer:

lol

Step-by-step explanation:

Answer:

They will line up.

Step-by-step explanation:

When you graph their slopes, they will create a straight line.

Answer:

C

Step-by-step explanation:

You divide first than you get ur fraction

2 km east and 10 km north

Step-by-step explanation:

I did the activity and got the right answer.

Answer: 12km west and 2km south

Step-by-step explanation:

Just did it

Answer:

(-5.5, 3.2) or the third option

Step-by-step explanation:

i did the test on edg

Answer: C: (-5.5, 3.2)

Step-by-step explanation: correct answer on edg2020. i took the quiz

Answer:

y = x^2 - 6 and y = x - 4

Step-by-step explanation:

It's x^2 - 6, because the parabola was moved 6 down, and positive slope, so in the linear, x is positive

Answer:

the answer of the question is 2.5

Answer:

5

Step-by-step explanation:

it is 5 because 5 + 6 + 7 + 8 =26

and 5 is the least

Answer:

Step-by-step explanation:

Answer:

C is the answer.

0.75 = 3/4

1 = 4/4, 1-0.25 = 0.75

4/4 -1/4 = 3/4

Step-by-step explanation:

Answer:

A and C for sure. I'm not sure about D and E because I can't see the picture. If you tell me the other coordinates I can figure it out.