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Strike441 [17]
2 years ago
6

The low temperature on a certain day is 51°F. The low temperature is 17°F lower than the high temperature, h.

Mathematics
1 answer:
ohaa [14]2 years ago
5 0

Using the change of subject of formula, the high temperature value for the day can be modeled using the expression <em>High temperature = Low temperature - 17°F</em>

<u>Giveb</u><u> </u><u>the</u><u> </u><u>Parameters</u><u> </u><u>:</u>

  • <em>Low</em><em> </em><em>temperature</em><em> </em><em>=</em><em> </em><em>51</em><em>°</em><em>F</em>

<u>The</u><u> </u><u>low</u><u> </u><u>temperature</u><u> </u><u>is</u><u> </u><u>17</u><u>°</u><u>F</u><u> </u><u>lower</u><u> </u><u>than</u><u> </u><u>the</u><u> </u><u>high</u><u> </u><u>temperature</u><u>,</u><u> </u><u>this can be</u><u> </u><u>modeled</u><u> </u><u>as</u><u> </u><u>an</u><u> </u><u>equation</u><u> </u><u>thus</u><u> </u><u>:</u>

<em>Low temperature = High temperature + 17°F</em>

<u>Male</u><u> </u><u>the</u><u> </u><u>high</u><u> </u><u>temperature</u><u> </u><u>the</u><u> </u><u>subject</u><u> </u><u>:</u>

High temperature = Low temperature - 17°F

Therefore, the equation which models the high temperature is : <em>High temperature = Low temperature - 17°F</em>

Learn more :brainly.com/question/25449918

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Answer: The slope is 1/4.

Step-by-step explanation:

To find the slope, find two points on the line and find the difference in their y coordinates and divide it by the difference in their x coordinates .

(0,20)  and   (40,30)  

Difference in y: 30 - 20 = 10  

Difference in x:  40 - 0 = 40  

Slope:  10/ 40 = 1/4

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3 years ago
Martin ran 6.5 miles in one hour. At that speed, how many miles will he<br> three hours?
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ANSWER: Martin will run 19.5 miles in 3 hours.

STEP-BY-STEP EXPLANATION: 6.5 x 3 = 19.5
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3 years ago
Read 2 more answers
A five​-digit number starts with a number between 4​-9 in the first​ position, with no restrictions on the remaining 4 digits. a
Maurinko [17]

Answer:

(a) Pr = 0.3024

(b) Pr = 0.6976

(c) Pr = \frac{^9P_{n-1}}{10^{n-1}}

Step-by-step explanation:

Given

Start = \{5,6,7,8\} i.e. between 4 and 9

n(Start) =4

Digits = 5

Solving (a): Probability that each of the 5 digit are different

Since there is no restriction;

The total possible selection is as follows:

First\ digit = 4 (i.e. any of the 4 start digits)

Second\ digit = 10\\ (i.e. any of the 10 digits 0 - 9)

Third\ digit = 10 (i.e. any of the 10 digits 0 - 9)

Fourth\ digit = 10 (i.e. any of the 10 digits 0 - 9)

Fifth\ digit = 10 (i.e. any of the 10 digits 0 - 9)

So, the total is:

Total = 4 * 10 * 10 * 10 * 10

Total = 40000

For selection that all digits are different, the selection is:

First\ digit = 4 (i.e. any of the 4 start digits)

Second\ digit = 9 (i.e. any of the remaining 9)

Third\ digit = 8 (i.e. any of the remaining 8)

Fourth\ digit = 7 (i.e. any of the remaining 7)

Fifth\ digit = 6 (i.e. any of the remaining 6)

So:

Selection =4 * 9 * 8 * 7 * 6

Selection =12096

So, the probability is:

Pr = \frac{Selection}{Total}

Pr = \frac{12096}{40000}

Pr = 0.3024

Solving (b): At least 1 repeated digit

The probability calculated in (a) is the all digits are different i.e. P(None)

So, using laws of complement

We have:

P(At\ least\ 1) = 1 - P(None)

So, we have:

Pr= 1 - 0.3024

Pr = 0.6976

Solving (c): An expression to model the probability.

<em>Using (a) as a point of reference, we have;</em>

Pr = \frac{Selection}{Total}

Where

Selection =4 * 9 * 8 * 7 * 6 ---- for selection of 5 i.e. n = 5

Total = 4 * 10 * 10 * 10 * 10

Selection =4 * 9 * 8 * 7 * 6

This can be rewritten as:

Selection = 4 * ^9P_4

4 can be expressed as: 5 - 1

So, we have:

Selection = (5-1) *^9P_{5-1}

Substitute n for 5

Selection = (n-1) *^9P_{n-1}

Selection = (n-1)^9P_{n-1}

Total = 4 * 10 * 10 * 10 * 10

This can be rewritten as:

Total = 4 * 10^4

Total = (5-1) * 10^{5-1}

Total = (n-1) * 10^{n-1}

Total = (n-1) 10^{n-1}

So, the expression is:

Pr = \frac{(n-1)^9P_{n-1}}{(n-1)10^{n-1}}

Pr = \frac{^9P_{n-1}}{10^{n-1}}

<em>Where n represents the digit number</em>

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3 years ago
What is the value of x in the equation 2(x−3) 9=3(x 1) x? x = −3 x = −1 x = 0 x = 3
Masja [62]

The solution of the linear equation is x = 0.

<h3>What is the linear equation?</h3>

An equation is a mathematical statement, which has an equal sign (=) between the algebraic expression.

Linear equations are the equations of degree 1.

The given linear equation is;

\rm 2(x-3)+ 9=3(x+ 1) +x

The value of x is determined in the following steps given below.\rm 2(x-3)+9=3(x+1)+x\\\\2x-6+9=3x+3+x\\\\\ 2x+3=4x+3\\\\3-3=4x-2x\\\\0=2x\\\\x=0

Hence, the solution of the linear equation is x = 0.

To know more about linear equations click the link given below.

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2 years ago
fred is playing tennis fo every 2 of his serves that land in 4 serves land out if he hit 26 serves in how many serves landed out
ki77a [65]

Answer:

52 serves landed out

Explanation:

If you divide the number of serves in by 2 ( number that he lands in for every 6 serves) and then multiply by 4 ( number that land out for every 6 serves), you get 52 serves out.

3 0
3 years ago
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