Find the area. Use 3.14 for the value of . Round your π answer. when the radius is 20ft?

Rob is a high school student taking both algebra and geometry. Last night he had 27 homework problems combined from the two clas

azamat

Answer:

15

Step-by-step explanation:

Let x represent the number of algebra problems. Then the number of geometry problems was 27-x and the total working time was ...

2x +5(27 -x) = 90

-3x = 90 -135 . . . . subtract 135

x = -45/-3 = 15 . . . divide by -3

Rob had 15 algebra problems for homework.

8 0

2 years ago

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If there are 400 ounces in 25 pounds, how many ounces are in 8 pounds

ladessa [460]

The answer is: " 128 oz. " .
_________________________________________________________
There are: " 128 oz. " (in " 8 lbs." ) .
_________________________________________________________
Explanation:
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Set up a proportion; as a fraction; as follows:
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400/ 25 = x / 8 ;

in which: "x" = the number of "ounces [oz.] there are in "8 lbs." ;
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We shall solve for "x" , the answer to the problem:

Cross-factor multiply:

25x = (400) * 8 ;

→ 25x = 3200 ;

Divide each side of the equation by "25" ; to isolate "x" on one side of the equation; & to solve for "x" ;

→ 25x / 25 = 3200 / 25 ;

→ x = 128 .
_________________________________________________________
Answer: " 128 oz. " .
_________________________________________________________
There are: " 128 oz. " (in " 8 lbs." ) .
_________________________________________________________

Note of interest: " 16 oz. = 1 lb. " (exact conversion).

So; "8 lbs. <span>= ?</span> oz. " ;

→ " 8 lbs. * (16 oz/ 1 lb) = ( 8 * 16) oz. = 128 oz. ; → which is our answer!
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3 0

2 years ago

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Orlon Jewelry, a retail store, restructures its employees’ schedules every six months. The employees are asked for their shift p

natima [27]

Answer:

C

Step-by-step explanation:

Total sales:

Brian:

July, 38.9; August, 35.9, September, 40.5; October, 36.1

= $151,400

Laura:

July, 41.1; August, 36.8, September, 39.2; October, 43.3

= $160,400

Miguel:

July, 40.1; August, 44.1, September, 43.3; October, 39.7

= $167,200

Wanda:

July, 41.2; August, 36.5, September, 43.2; October, 39.3

= $160,200

Ranking:

1) Miguel (5 pm)

2) Laura (8 am)

3) Wanda (2 pm)

4) Brian (11 am)

6 0

2 years ago

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-2/3m = -12 please explain how to solve.

vichka [17]

Answer:

m = 18

Step-by-step explanation:

-2/3m = -12

multiply both sides of the equation by 3:

-2/3m(3) = -12(3)

simplify:

-2m = -36

divide both sides by -2:

-2m/-2 = -36/-2

simplify:

m = 18

3 0

2 years ago

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Graph the line with the equation y = 1/6x-5<br><br> PLEASE HELP

quester [9]

Answer:

Step-by-step explanation:

5 0

2 years ago