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Morgarella [4.7K]
4 years ago
12

Use the formula F=1.8C+32 to convert -20° into fahrenheit.

Mathematics
2 answers:
ZanzabumX [31]4 years ago
7 0

F=1.8C+32

We are given C=-20 degrees

plugging this value in the given equation

F=1.8(-20)+32

F=-36+32=-4

F=-4 degree fahrenheit

Annette [7]4 years ago
3 0
.....?? dont know thats my question too..
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Twice the sum of a number and 5 is equal to three times the difference of the number and 3. Find the number.
Volgvan

let x be the number

2(x+5)= ±3(x-3)

2x+10= 3x-9 or 2x+10= -3x+9

x=19 or x=0.2

8 0
3 years ago
What is the value of h(a) when a = 2 in the
Ivahew [28]
<h3>Answer:   3</h3>

=========================================================

Explanation:

This is the given piecewise function

h(a) = \begin{cases}3a+2 \text{ when } a > 3\\4a+5 \text{ when } a = 3\\3 \text{ when } a < 3\\\end{cases}

We can rewrite things like this

\text{when } a > 3, \ \  h(a) = 3a+2\\\text{when } a = 3, \ \  h(a) = 4a+5\\\text{when }a < 3, \ \  h(a) = 3\\

I personally prefer this format better because it mentions the inputs first, and that leads to which function definition we go for.

The input a = 2 fits the description of a < 3 since 2 < 3 is a true statement. Therefore we go for the third line and can see that h(a) = 3 becomes h(2) = 3

-----------

As another example, if we had the input a = 7, then we'd go for the first line (since 7 > 3) and get

h(a) = 3a+2

h(7) = 3(7)+2

h(7) = 23

4 0
2 years ago
If the parent function is y = 4x, which is the function of the graph?
Paraphin [41]

Answer: y=3(4)x

Explanation: I took the test

6 0
3 years ago
Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in a the past year. Suppose a sa
strojnjashka [21]

Answer:

0.015 is the approximate probability that the mean salary of the 100 players was less than $3.0 million

Step-by-step explanation:

We are given the following information in the question:

Mean, μ =$3.26 million

Standard Deviation, σ = $1.2 million 100

We assume that the distribution of salaries is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

Standard error due to sampling =

\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{1.2}{\sqrt{100}} = 0.12

P(mean salary of the 100 players was less than $3.0 million)

P(x < 3) = P(z < \displaystyle\frac{3-3.26}{0.12}) = P(z < -2.167)

Calculating the value from the standard normal table we have,

P(Z < -2.167) = 0.015 \\P( x < 3) = 1.5\%

0.015 is the approximate probability that the mean salary of the 100 players was less than $3.0 million

6 0
4 years ago
A circular fountain has 132 feet of railing around it. What is the area of the fountain to the nearest square foot? Use 3.14 for
11111nata11111 [884]

Answer:

139

Step-by-step explanation:

First we need to find diameter 132/3.14=42 rounded

Then we halve it to find radius 42/2=21

Formula for area is radius x radius x 3.14

21 x 21 = 441 x 3.14 = 138.74 round up is 139

8 0
3 years ago
Read 2 more answers
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