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natita [175]
4 years ago
6

25 points PLEASE HELP I WILL GIVE BRAINLEIST

Mathematics
1 answer:
inysia [295]4 years ago
5 0
In this model, x=8 and y= 29. See attached image for work
You might be interested in
8 Darpan runs a distance of 12 km and then cycles a distance of 26 km. His running speed is x km/h and his cycling speed is 10 k
Sonja [21]

The equation in terms of x, for the total time he takes in hours would be 2.48 = 12/x  + 26/10x

<h3>What is speed?</h3>

Speed can be calculated as the ratio of distance traveled to the time taken

Darpan runs a distance of 12 km and then cycles a distance of 26 km.

Total distance = 12 + 26 = 38km

The running speed is x km/h

A = x

The cycling speed is 10 km/h faster than his running speed

B = 10x

He takes a total time of 2 hours and 48 minutes.

So, the total time he takes

Time = Distance x speed

2.48 = 12/x  + 26/10x

10x(2.48) = 120 + 26

24.8x = 146

x = 5.8

Learn more about speed here;

brainly.com/question/7359669

#SPJ1

8 0
2 years ago
Log (X) + 5 = 8 el valor de X es *
GaryK [48]
Log (x) = 3
10^3 = x
x = 1,000
4 0
3 years ago
The minimum and maximum temperature for a day in Cupcake Town can be modeled by the equation below: 3|x − 8| + 15 = 18 What are
Anit [1.1K]
<span>3|x − 8| =18 - 15 = 3
</span>|x − 8| = 3/3 = 1
x − 8 = \pm1
x = \pm1 + 8
x = 1 + 8 or x = -1 + 8
x = 9 or x = 7
i.e. minimum temperature is 7 while the maximum temperature is 9

6 0
4 years ago
Relationships between means, standard deviations, X values,and z-scores
Vlada [557]

Answer:

a) The average salary of firefighters in Portugal is $583.

b) The standard deviation of the salary of firefighters in Portugal is $319.8

Step-by-step explanation:

We are given the following in the question:

a) Standard Deviation, σ = $145.80

We are given that the distribution of salary of professor is a bell shaped distribution that is a normal distribution.

Formula:

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

A salary of $510.10 has a z-score of -0.50.

Putting values, we get,

-0.50 = \displaystyle\frac{510.10-\mu}{145.80}\\\\\mu = 0.50(145.80) + 510.10\\\Rightarrow \mu = 583

Thus, the average salary of firefighters in Portugal is $583.

b) Mean, μ = $2,132

We are given that the distribution of salary of computer programmers is a bell shaped distribution that is a normal distribution.

Formula:

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

The salary of $2,291.90 has a z-score of +0.50

Putting values, we get,

0.50 = \displaystyle\frac{2291.90-2132}{\sigma}\\\\\sigma= \frac{2291.90-2132}{0.50}\\\\\sigma = 319.8

Thus, the standard deviation of the salary of firefighters in Portugal is $319.8

6 0
4 years ago
Can someone please help me with number 13.
snow_lady [41]
You can set up 2 equations for the two companies that sell pizza. Pizza A's will be:
y = 1.5x+10

And B's will be:
y = x+12.50

To find the number of toppings we will need to make the companies prices equal can be found by setting the equations equal to each other and solving for x, because x is the price per topping. So:
1.5x+10 = x+12.50
1.5x = x+2.50
0.5x = 2.50
x  =   \frac{2.5}{0.5}  = 5

So, the number of toppings you will need is 5 toppings to make their prices equal. 

*If any step is unclear, then hmu!
3 0
3 years ago
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