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goldfiish [28.3K]
3 years ago
15

Last week at the lake it was 23 °C. Yesterday it was 13 degrees warmer. What was the temperature yesterday?

Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
6 0

Answer:

The temperature yesterday was 36 °C.

Step-by-step explanation:

I am going to solve this question building a system of equations.

We have that:

x is the temperature last week at the lake.

y is the temperature yesterday at the lake.

Last week at the lake it was 23 °C.

This means that x = 23

Yesterday it was 13 degrees warmer.

This means that

y = x + 13

Since x = 23

y = 23 + 13 = 36

The temperature yesterday was 36 °C.

statuscvo [17]3 years ago
3 0
Answer

36 C

Solution

23+13
= 36
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Nesterboy [21]

Using function concepts, it is found that the domain is 0 ≤ t ≤ 2.4, given by option C.

----------------------

The height of the apple after t seconds is given by:

h(t) = -16t^2 + 38.4t + 0.96

  • The domain of a function is the <u>set that contains all possible input values.</u>
  • The possible input values for this situation are the values of t between 0 and the instant in which the apple hits the ground, which is t for which h(t) = 0.

----------------------

h(t) = -16t^2 + 38.4t + 0.96

Which is a quadratic equation with a = -16, b = 38.4, c = 0.96

To find the solutions:

\Delta = b^2 - 4ac = (38.4)^2 - 4(-16)(0.96) = 1536

t_1 = \frac{-b + \sqrt{\Delta}}{2a} = \frac{-38.4 + \sqrt{1536}}{2(-16)} = -0.0247

t_2 = \frac{-b + \sqrt{\Delta}}{2a} = \frac{-38.4 - \sqrt{1536}}{2(-16)} = 2.4

The apple is in the air for 0 ≤ t ≤ 2.4, which means that the domain is given by option C.

A similar problem is given at brainly.com/question/23932338

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The perimeter of a rectangle is 24 in. and its length l l is 3 times the width w w . what is the length and width \left(l,w\righ
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-4

Step-by-step explanation:

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Step-by-step explanation:

To calculate area of a triangle we multiply height with base and then divide that by 2

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Answer:

q = (a - r) / b.

Step-by-step explanation:

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