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2 years ago

5. What is the value of the expression I(29 + 18) + (17 - 8)] + 8?

Mathematics

2 answers:

saveliy_v [14]2 years ago

6 0

Answer:

64 Hope it helped brainiest plz and thank you!!!!!!!!

Step-by-step explanation:

(29+18)=47

(17-8)=9

47+9+8

In total it equals: 64

mezya [45]2 years ago

5 0

Answer:

Solve parenthesis first using PEMDAS.

29 + 18 = 47

17 - 8 = 11

47 + 11 + 8 = 66

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the sum of the digits of a two number is 14 .if 36 is substracted from the number,the places of the digits are reversed.find the

Taya2010 [7]

The number in the ones place= X
The number in the tenths place= y
y+x=14.
y=14-x

Original placement of numbers=10y+x
New placement of numbers(after subtraction of 36)= 10x+y

10y+ x-36=10x+y
Substitute y with 14-x
So we would get

10(14-x)+ x-36=10x+(14-x)
=140-10x+x-36=10x+14-x
After transposing we get
140-14-36=10x-x+10x-x
=90=18x
X=90/18
x=5

Y=14-x
=14-5
=9

So the two digit number is
10y+x
=90+5
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3 years ago

An important factor in selling a residential property is the number of times real estate, agents show a home. A sample of 21 hom

Natalka [10]

Using the t-distribution to build the 99% confidence interval, it is found that:

The margin of error is of 3.64.

The 99% confidence interval for the population mean is (19.36, 26.64).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm t\frac{s}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

t is the critical value.

n is the sample size.

s is the standard deviation for the sample.

The critical value, using a t-distribution calculator, for a two-tailed 95% confidence interval, with 21 - 1 = 20 df, is t = 2.086.

The other parameters are given as follows:

$\overline{x} = 23, s = 8, n = 21$

The margin of error is given by:

$M = t\frac{s}{\sqrt{n}} = 2.086\frac{8}{\sqrt{21}} = 3.64$

Hence the bounds of the interval are:

$\overline{x} - M = 23 - 3.64 = 19.36$

$\overline{x} + M = 23 + 3.64 = 26.64$

The 99% confidence interval for the population mean is (19.36, 26.64).

More can be learned about the t-distribution at brainly.com/question/16162795

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1 year ago

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1 year ago

15/35 in simplest form

Aleksandr-060686 [28]

Find the GCF of 15 and 35
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35=7*5
The Greatest Common Factor here is 5
Divide both the numerator and denominator by this value to get the simplest form.
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