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3 years ago

Use properties of addition and subtraction to evaluate the expression -42 - 29 - 28

Mathematics

1 answer:

Setler [38]3 years ago

7 0

(-42) (-29) (-28)
-42 - 29 = -71
-71 - 28 = -99

-99 is your answer

hope this helps

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I need help solving this

weeeeeb [17]

i y vino the answer is 60° i hope so

8 0

2 years ago

Solve this problem in your notebook using all four steps. A board 60 in. long is cut into two parts so that the longer piece is

Viktor [21]

X = shorter piece
y = longer piece = 5x

shorter piece + longer piece = 60
x + 5x = 60
6x = 60
x = 60/6
x = 10 in. <== shorter piece

y = 5x
y = 5(10)
y = 50 in. <== longer piece

8 0

2 years ago

In a random sample of 300 attendees of a minor league baseball game, 182 said that they bought food from the concession stand. C

horrorfan [7]

Answer:

90% confidence interval for the proportion of fans who bought food from the concession stand

(0.5603,0.6529)

Step-by-step explanation:

Step(i):-

Given sample size 'n' =300

Given data random sample of 300 attendees of a minor league baseball game, 182 said that they bought food from the concession stand.

Given sample proportion

$p^{-} = \frac{x}{n} = \frac{182}{300} =0.606$

level of significance = 90% or 0.10

Z₀.₁₀ = 1.645

90% confidence interval for the proportion is determined by

$(p^{-} - Z_{0.10}\sqrt{\frac{p(1-p)}{n} } , p^{-} +Z_{0.10}\sqrt{\frac{p(1-p)}{n} })$

$(0.6066 - 1.645\sqrt{\frac{0.6066(1-0.6066)}{300} } ,0.6066+1.645\sqrt{\frac{0.6066(1-0.6066)}{300} })$

(0.6066 - 0.0463 ,0.6066 + 0.0463)

(0.5603,0.6529)

final answer:-

90% confidence interval for the proportion of fans who bought food from the concession stand

(0.5603,0.6529)

5 0

2 years ago

The sum of four consecutive integers is 342. What is the third term in the sequence

Fofino [41]

Answer:

Step-by-step explanation:

let four consecutive integers: n , n+1 , n+2 , n+3

n + n+1 + n+2 + n+3 = 342

4n + 6 = 342

4n + 6 - 6 = 342 - 6

4n = 336

divid by : 4

n = 84

but the third term is : n +2 so : 84+2 = 86

4 0

2 years ago

Elaine plans on saving $2,000 a year and expects to earn an annual rate of 8.8 percent. How much will she have in her account at

yKpoI14uk [10]

Answer:

$831,532.24

Step-by-step explanation:

The amount that will be in her account at ordinary annuity is derived using the formula:

$A(n) = \dfrac{P((1 + r)^{n}-1)}{r}$

Where:

Yearly Deposit,P=$2000

Annual rate,r=8.8%=0.088

Number of Years,n=43 years

$A(43) = \dfrac{2000((1 + 0.088)^{43}-1)}{0.088}\\\dfrac{2000[(1 .088)^{43}-1]}{0.088}\\A(43)=\$831,532.24$

At the end of 43 years, she would have $831,532.24 in her account.

3 0

3 years ago