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nadezda [96]
3 years ago
15

The temperature in a city was recorded over a ten-hour period. The graph below shows the relationship between the temperature an

d the number of hours.
Which statement best interprets information provided by the graph?
A. The temperature in the city increased for some time and decreased for some time.
B. The temperature remained constant for a while.
C. The temperature in the city increased throughout the period.
D. The temperature in the city increased at a constant rate for the entire time.

Mathematics
1 answer:
harkovskaia [24]3 years ago
5 0

Answer:

A

Step-by-step explanation:

From the graph, we can see that the <em>temperature increased initially</em>, then <em>started to decrease</em>. <u>All of these NOT in a constant rate, though</u>.

Roughly, the temperature was increasing from start till around 5.5 hours. Then on the temperature decreased.

So we can eliminate B, C, and D. That leaves us with correct answer as A.

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Linear equations in two variables
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Answer:

y=-4 is a function

Step-by-step explanation:

It passes the vertical line test, and each x has only one y, so it is a function.

x = -4 is NOT a function because one x has multiple y values. It does not pass the vertical line test.

5 0
2 years ago
In a sale the price of a sofa a reduced from £2500 to £1840 what is the percentage decrease
11111nata11111 [884]

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Answer:

  26.4% decrease

Step-by-step explanation:

The amount of change is ...

  2500 -1840 = -660

As a percentage of the original price, that is ...

  -660/2500 × 100% = -26.4% . . . . . negative change = decrease

The decrease is 26.4%.

7 0
3 years ago
1046.4 carried out to two decimal places
julia-pushkina [17]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Given y &lt; 4x – 6, explain how to graph this and decide whether or not (– 1, 5) is a solution to this inequality
svp [43]

the point (-1,5 ) is NOT a solution to the inequality.

There are three steps in graphing an inequality:

Rearrange the equation so "y" is on the left and everything else on the right.

Plot the "y=" line (make it a solid line for y≤ or y≥, and a dashed line for y< or y>)

Shade above the line for a "greater than" (y> or y≥)

or below the line for a "less than" (y< or y≤).

Now to solve this, graph the line y=4x-6

Lets use the point (0,0)

0<-6, is NOT true

So we shade everything to the left of the line y=4x-6

Hope that helped.

4 0
3 years ago
A ball is thrown from the height of 35 meters with an initial downward velocity of 5m/s. The ball's height h (in meters) after t
Verdich [7]
You find this value by factoring.  Factoring finds the zeros of the function.  When the ball hits the ground, it has 0 height.  Therefore, when the function goes through the x axis, it has a y value of 0.  That means that when y = 0, the ball has hit the ground.  Use the quadratic formula to factor h(t)=-5 t^{2}-5t+35.  Notice I rearranged the terms.  When you factor that you get zeros of -3.19 and 2.19.  The two things in math that will never EVER be negative are time and distance/length.  Therefore, that tells us that the ball hits the ground 2.19 seconds after it was thrown.
7 0
3 years ago
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