Please can someone help me on this? please!

Answers

Answer 1

Answer: The points 'A' and 'B' are plotted correctly on your graph, so you're
more than halfway to plotting 'C' and 'D'.

You just have to remember what 'x-coordinate' and y-coordinate' mean.

Whenever a point is described with 2 numbers, the first number is the 'x'
and the second number is the 'y'. You knew that, and that's how you were
able to put 'A' and 'B' in the right places.

Any point: ( x-coordinate, y-coordinate )

Point 'A': (4, 3) ... x-coordinate is 4, y-coordinate is 3 .
Point 'B': (1, -5)... x-coordinate is 1, y-coordinate is -5 .

Point 'C':
has the same x-coordinate as 'B' ... it's 1 .
has the same y-coordinate as 'A' ... it's 3 .

So point 'C' is (1, 3). You should have no trouble marking it on the graph.

An important tip:
When you plot points, you really ought to label them on the graph.
I see the two dots that you put on the graph, but really, the teacher
doesn't know for sure which one you think is 'A' and which one you
think is 'B'. Later, when you get done plotting 'C' and 'D', you'll have
a real mess on the graph if the points are not labeled.

Answer 2

Answer: $C=(1,3)\n D=(-5,4)$

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Which equation is true for the value x = 15?2(x + 3) = 402(x − 5) = 302(x + 5) = 40x + 2x = 303x − x = 45

Given the equation 4x + 2y = 9, which equation below would cause an inconsistent-independent system?A:6x + 12y = 13
B: 2x + y = -6
C:x - 2y = 7
D:8x - 4y = -5

Answers

Inconsistent-independent system means that there are no solutions.
Graphically the lines of those equations will never cross - the lines are parallel.

So when the two lines are parallel?
When they have the same A factors.

So when you have an equation 4x+2y=9 we need to rewrite it to
y= -2x+9/2
So the A factor is -2 (it is the number with x) and the B factor is 9/2

So all we need to do now is to find an equation with the same A factor.

Lets rewrite equations in answers:
A: 6x+12y=13 -> y=-1/2x+13/12 A=-1/2 - so it is not an equation we are looking for
B: 2x+y=-6 -> y=-2x-6 A=-2 - this is an equation we were looking for.
C: x-2y=7 -> y=1/2x-7/2 A=1/2 - so it is also not a good answer

The answer is B: the equation 2x+y=-6 will cause the inconsistent-independent system with the given equation.

Which measurement is the best estimate for the mass of a refrigerator?A : 90 mg

B : 90 g

C : 90 kg

Answers

C 90 kg A and B are to small

Answer:

90 Kg

Step-by-step explanation:

because the b and a are to small to be the estimate mass of a refrigerator.

Vinyl peel and-and-stick floor tiles are each 1- foot square. What is the minimum number of these tiles needed to tile the entire floor of a 12-foot by 14- foot rectangular room, and a 12-foot by 4-foot rectangular hallway?

Answers

Answer:

The minimum number of Vinyl peel and stick floor tiles needed is 216 Tiles

Step-by-step explanation:

Here we have area size of Vinyl peel and stick floor tiles = 1 ft²

Size of floor of rectangular room = 12 ft × 14 ft = 168 ft²

Size of floor on rectangular hallway = 12 ft × 4 ft = 48 ft²

Total area of floor in rectangular room and rectangular hallway

= 168 ft² + 48 ft² = 216 ft²

Therefore number of Vinyl peel and stick floor tiles needed =

(Total area of floor in rectangular room and rectangular hallway)÷( Area size of Vinyl peel and stick floor tiles) = 216 ft²/(1 ft²) = 216

Therefore the minimum number of Vinyl peel and stick floor tiles needed = 216 Tiles.

Answer:

Number of tiles to tile the room: 168 tiles

Number of tiles to tile the hallway: 48 tiles

Total number of tiles: 216 tiles

Step-by-step explanation:

To find how many tiles Vinyl needs, we need to find the total area of the room and the hallway, and divide these areas by the area of each floor tile.

The area of a rectangle is calculated with the product between its dimensions (length and width).

Area of floor tile = 1 ft2

Area of rectangular room: 12 foot * 14 foot = 168 ft2

Area of rectangular hallway: 12 foot * 4 foot = 48 ft2

Number of tiles to tile the room: 168/1 = 168 tiles

Number of tiles to tile the hallway: 48/1 = 48 tiles

Total number of tiles: 168 + 48 = 216 tiles

Write an algebraic expression to represent the verbal expression the difference between the product of 4 and a number and the square of the number

Answers

You set it up like this.

It says "the difference", so you put a minus sign: -
It says that the minuend, or the part being taken away from is a quantity equal to the product of 4 and "some number" (we'll use x), so now you have: (4 * x) -
Next, it says the subtrahend, or part being removed, is the square of "the number", meaning we use the "some number", x, from before, so now you have: (4 * x) - x^2

Briyana has $150, and she needs to save at least $560 for a spring break trip. If she can save $45 per week, how long will it take her to save enough money? Let w = weeks saving money. Write an inequality to describe the situation.

45w + 150< 560

45w + 150> 560

150w + 45< 560

150w + 45 > 560