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Alex777 [14]
3 years ago
9

3) A local meteorologist measured the rain during a storm and recorded it on a graph. At what

Mathematics
2 answers:
Vitek1552 [10]3 years ago
6 0

Answer:

  • A) 2 cm per hour

Step-by-step explanation:

<u>Use two ordered pairs from the graph to find the rate of change:</u>

  • (0, 0), (1, 2)
  • m = 2/1 = 2

Correct choice is A

ra1l [238]3 years ago
5 0

Answer:

The rain fell at 2cm per hour

You might be interested in
which of the following are NOT trigonometric identities, Check all that apply a.) sec^(2) x - tan^(2) x=1 b) sec^(2) x+csc^(2) x
Anit [1.1K]

By looking the given options, we can say that some of them are following pythagorean identities and pythagorean identities are

sin^2(x) + cos^2(x) =1, sec^2(x)-tan^2(x) =1,csc^2(x) -cot^2(x)=1

So out the four options, option a and option c are following pythagorean identity and option b and option d are not following pythagorean identity. And we have to find those options which are not identities .

So the correct options are

b) sec^{2} x+csc^{2} x=1 \ d) tan^{2} x + sec^{2} x =1

4 0
3 years ago
It takes one pizza to feed three people. How many pizzas will it take to feed forty-eight people?
IgorLugansk [536]

Answer:

option 3-- 16 pizzas

Step-by-step explanation:

divide 48 by 3 = 16

5 0
3 years ago
Read 2 more answers
The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 9
mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

<em>The height </em>h(t)<em> of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation </em>h(t) = 3 +90\cdot t -16\cdot t^{2}<em>, where </em>t<em> is time in seconds. After how many seconds will the ball be 84 feet above the ground. </em>

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

3+90\cdot t -16\cdot t^{2} = 84

16\cdot t^{2}-90\cdot t +81 = 0 (1)

By Quadratic Formula:

t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}

t_{1} = 4.5\,s, t_{2} = 1.125\,s

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

3 0
3 years ago
If u know that y=30 then what is y=4x-2
Marta_Voda [28]

Answer:

x = 8

Step-by-step explanation:

y = 4x - 2

30 = 4x - 2

+ 2        + 2

32 = 4x

/ 4     / 4

8 = x

4 0
3 years ago
This table shows the number of different sized pipes that have been used at Highfield Builders in January.
mote1985 [20]

Answer:

No

Mean diameter = 44, which is in the 40 - 44 cm group

Step-by-step explanation:

Given the data:

Diameter (cm) - mid point(X) - frequency(F) - - FX

35-39 - - - - 37 - - - - 8 - - 296

40-44 - - - 42 - - - 10 - - - 420

45-49 - - - 47 - - - 13 - - - 611

50-54 - - - 52 - - - 3 - - - 156

55-59 - - - 57 - - - 1 - - - 57

Mean of grouped data:

Sum of (F × X) / sum of F

1540 / 35 = 44

8 0
4 years ago
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