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Romashka-Z-Leto [24]

3 years ago

14

Grace started her own landscaping business. She charges $6 an hour for mowing lawns and $11 per hour for pulling weeds. In Septe

mber she mowed lawns for 63 hours and pulled weeds for 9 hours. How much money did she earn in September?

1 answer:

Step2247 [10]3 years ago

7 0

Answer:

$477

Step-by-step explanation:

(36)(6)= 378 Lawns

(11)(9)= +99 Weed Pulling

$477 earned in September

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Solve for angle B in right triangle ABC. <br><br> I got 53, is it right?

lara31 [8.8K]

Yup its 53 Degrees you got it right :)

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3 years ago

A company that produces computers recently tested the battery in its latest laptop in six separate trials. The battery lasted 8.

Anna35 [415]

confidence interval for the mean battery life in the new model is [7.9489, 8.3045].

What is confidence interval ?

A confidence interval, in statistics, refers to the chance that a population parameter can fall between a collection of values for an exact proportion of times.

Main body:

Formula for confidence interval is =

CI = x- bar ± z*s/√n where,

CI = confidence interval

x- bar = sample mean

z = confidence level value

{s} = sample standard deviation

{n} = sample size

given ;

n = 6

mean = (8.23+7.89+8.14+8.25+8.30+ 7.95)/6

= 8.127

value of z for 95% C.I. = 1.96

C.I. = 8.127 ± 1.96 * 0.22/√6

C.I. = 8.127 ± 0.1781

C.I. =[7.9490, 8.3044]

Hence correct option is A.

To know more about confidence interval , visit:;

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7 months ago

Solve for n.<br><br> -8n − n + -n − -12n = 14

MakcuM [25]

Your answer would be n=-1/5

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3 years ago

(NO LINKS) HELP ASAP! THIS IS DUE TODAY! ILL GIVE BRAINLIEST TO DECENT ANSWER AND 20+ POINTS!

IrinaVladis [17]

Answer:

Part A: a histogram

Step-by-step explanation:

Part A:

A histogram would be the best to use since they gave values that are x - y, or a ranged amount for the score.

Part B:

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2 years ago

XB is the angle bisector of ZAXC. MZAXB23А.BVхC с

neonofarm [45]

To obtain x, we can sum the angles < AQB and < BQC

=> 5X + 8X - 24

=> 13X -24

we are also told that that the sum of their angles is 80

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x = 104/13

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10 months ago