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3 years ago

Write a function rule.

Mathematics

1 answer:

Tomtit [17]3 years ago

4 0

Answer:

Hi.... P=6.75+0.90x....

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El ingreso que perciben en un barrio de la Ciudad de Cuenca durante un día de trabajo los niños y adultos de una familia es: $3

sleet_krkn [62]

Answer:

im sorry i took long im not the best at math but since 10 equals r im not sure what you need to know but i think its 3+5r=80 i hope this help

Step-by-step explanation:

6 0

3 years ago

A motorcycle costs 12000. The value of the motorcycle deceases 6% each year. What is the rate each month

quester [9]

There are 12 months in a year and each year it decreases 6% so therefore each month it decreases .5%.

If you were asking the the amount it depreciates each month then you take .5% or .005 of 12000 which is 60 dollars a month.

7 0

3 years ago

Read 2 more answers

. A discount brokerage selected a random sample of 64 customers and reviewed the value of their accounts. The mean was $32,000 w

koban [17]

Answer:

The 90% confidence interval is $\$ \ 30313.9< \mu < \$ \ 33686.13$

Step-by-step explanation:

From the question we are told that

The sample size is n = 64

The sample mean is $\= x = \$ 32, 000$

The standard deviation is $\sigma= \$ 8, 200$

Given that the confidence interval is 90% then the level of significance is mathematically evaluated as

$\alpha = 100 - 90$

$\alpha = 10 \%$

$\alpha = 0.10$

Next we obtain the critical value of $\frac{ \alpha }{2}$ from the normal distribution table , the value is

$Z_{\frac{\alpha }{2} } = 1.645$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{ \sigma }{ \sqrt{n} }$

=> $E = 1.645 * \frac{ 8200 }{ \sqrt{64} }$

=> $E = 1686.13$

The 90% confidence interval is mathematically represented as

$\= x - E < \mu < \= x + E$

=> $32000 - 1689.13 < \mu < 32000 + 1689.13$

=> $\$ \ 30313.9< \mu < \$ \ 33686.13$

5 0

4 years ago

Find the value of x if y=2.5 on the graph of 2x-1=y

Romashka-Z-Leto [24]

Answer:

2x - 1 = y

2x - 1 = 2.5

Use inverse operations

2.5 + 1 = 3.5

3.5 / 2 = 1.75

2 x 1.75 - 1 = 2.5

x = 1.75

3 0

3 years ago

I need help with this

Dafna11 [192]

Answer:

x = -9

Step-by-step explanation:

The attachment shows the labeling according to the problem statement.

The overall length is the sum of the constituent segment lengths, so ...

FG + GH = FH

(10 +x) +(7) = (2x +26)

x +17 = 2x +26

x -9 = 2x

-9 = x

<em>Check</em>

Then the segment length FG is ...

10 +x = 10 -9 = 1

and the overall length is ...

2x +26 = 2(-9) +26 = -18 +26 = 8

That is, 1 + 7 = 8.

5 0

4 years ago