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3 years ago

[-1 + (-4)] + (6/7 + 1/7)

Mathematics

1 answer:

Radda [10]3 years ago

4 0

Answer:-4

Step-by-step explanation:

-1 +-4 is -5 and 6/7 + 1/7 =1 so -5 +1=-4

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The cost of a daily newspaper varies from city to city. however, the variation among prices remains steady with a standard devia

Tanya [424]

First, we establish our hypothesis:

Null hypothesis H0: μ = $1.00

Alternative hypothesis Ha: μ ≠ $1.00

Let’s say X = the sample average cost of a daily newspaper = 0.96

u = population mean cost = 1.00

S = sample standard deviation = 0.18

Calculating for z value:

z = (X – u) / S

z = (0.96 – 1) / 0.18

z = – 0.222

From the standard distribution table at this z value, p-value = 0.4129

Since alpha = 0.01, the decision therefore is:

Do not reject the null hypothesis because the p-value is greater than 0.01. There is enough evidence to support the claim that the mean cost of newspapers is $1.

6 0

3 years ago

Oh need to know alot and a lot

o-na [289]

Answer:

yeah so it is 74882828 it is pretty easy

5 0

2 years ago

Is a theater there are 28 rows in each row there are 32 seats, each ticket coasts £19.75

DedPeter [7]

Answer:

£17696

Step-by-step explanation:

28*32= 896

896*19.75= 17696

7 0

3 years ago

Read 2 more answers

A truck rental company rents a moving truck One Day by charging $39 + 0.09 per mile write a linear equation that relates the cos

Ivanshal [37]

Answer:

$(a)\ c(x) = 39 + 0.09 x$

$(b)\ \$53.4$

Step-by-step explanation:

Given

$Base\ Charge = \$39$

$Rate = 0.09$ per mile

Solving (a): Linear Equation

The total charges (c(x)) is: the base charge + the rate * number of miles (x).

So, we have:

$c(x)= 39 + 0.09 * x$

$c(x) = 39 + 0.09 x$

Solving (b): Cost of rent, if miles = 160

This implies that x = 160

So, we have:

$c(x) = 39 + 0.09 x$

$c(160) = 39 + 0.09 *160$

$c(160) = 39 + 14.4$

$c(160) = 53.4$

7 0

3 years ago

Of the 50 students in an undergraduate statistics class, 60% send email and/or text messages during any given lecture. They have

sasho [114]

Answer:

0.3 or 30%

Step-by-step explanation:

Since no innocent student will ever be caught, the probability that a student sends an email and/or text message during a lecture AND gets caught is given by the product of the probability of a student sending a message (60%) by the probability of the professor catching them (50%) :

$P = 0.5*0.6 = 0.3$

The probability is 0.3 or 30%.

7 0

3 years ago