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4 years ago

Please help thank you so much

Mathematics

1 answer:

Strike441 [17]4 years ago

5 0

I think it's 10? I'm not 100% sure though

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Jak wykonać to zadanie

balandron [24]

Step-by-step explanation:

jsjsjsjshjososnsnxjxjxjxjxjdjdj

8 0

3 years ago

the table shows the cost of a large cheese pizza with toppings at a local pizzeria. Graph the data, and find the slope and y-int

Musya8 [376]

-- Slope:
   Every time you add a topping, the cost increases by $2.
   So the slope is $2 per topping.

   C = 2t so far

-- But that can't be the whole equation.
   If it were the whole equation, then the cost of a pizza
   with no toppings would be zero.
   The cost of a pizza with no toppings is actually $8 ,
   so the whole equation is

C = 2t + 8 .

3 0

3 years ago

In a random sample of microwave ovens, the mean repair cost was $ and the standard deviation was $. Using the standard normal

Semmy [17]

Complete Question

In a random sample of 13 microwave ovens, the mean repair cost was $90.00 and the standard deviation was $15.20. Using the standard normal distribution with the appropriate calculations for a standard deviation that is known, assume the population is normally distributed, find the margin of error and construct a 98% confidence interval for the population mean u. A 98% confidence interval using the t-distribution was (78.7,101.3). Compare the results. The margin of error of u is

Answer:

The value is $E = 11.65$

Step-by-step explanation:

From the question we are told that

The sample is $n = 13$

The sample mean is $\= x = \$ 90$

The standard deviation is $\sigma = \$ 15.20$

The lower limit of the 98% confidence interval is $a = 78.7$

The upper limit of the 98% confidence interval is $b = 101.3$

Generally the margin of error is mathematically represented as

$E = \frac{b-a}{2}$

=> $E = \frac{ 101.3 - 78 }{2}$

=> $E = 11.65$

7 0

3 years ago

How to factor it and by what

Maurinko [17]

X^2 -5x -20=0
(x - 5/2)^2 -20 -25/4=0
(x-5/2)^2-105/4=0
(x -5/2 -(105)^1/2)(x -5/2 +(105)^1/2)=0
factors are (x -5/2 -(105)^1/2) and
(x -5/2 -(105)^1/2)

4 0

3 years ago

What is the answer, and how do I solve that equation in order to get my answer? I really want to get the hang of this.

Mrrafil [7]

Answer:

-x^2+4x+6

Step-by-step explanation:

f(x) = 4x+1

g(x) = x^2 - 5

(f-g) (x) = 4x+1 - ( x^2 - 5)

Distribute the minus sign

= 4x+1 - x^2 +5

Combine like terms

= -x^2+4x+6

6 0

3 years ago