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Cloud [144]
3 years ago
15

WILL MARK BRAINLEST

Mathematics
1 answer:
Fofino [41]3 years ago
7 0

Answer: The answer is 31.25 because The mean of 16 items was found to be 30. So once you checked, it was that 2 items were wrongly taken as 22 and 18 instead of 32 and 28 respectively. Sum = mean  no of items = 30  16 = 480

(32 +28) – (22 + 18) = 20

Correct mean =  = 31.25

Step-by-step explanation: My apologize that I took long I hope this helps.

You might be interested in
after selling three fifth of its books, a bookstore had 880 textbooks left. how many books were in the bookstore initially
sleet_krkn [62]

Answer:

yours answer is 1760

Step-by-step explanation:

he sold 3/5 of its books , that means 2/5 is left and 2/5 is 880

so 2/5=880  


880/5 = 176

176x2=352


352x5=1760

5 0
3 years ago
El garage "Bolivar" tiene3 pisos. En el primero hay 5 filas con 20 lugares en cada una. En el segundo y en el tercero, 4 filas c
Iteru [2.4K]

Answer:

220 automóviles

Step-by-step explanation:

Aquí, queremos saber la cantidad de autos que ingresarán al garaje cuando esté completamente ocupado.

De la pregunta, nos dicen que hay 3 pisos. Para el 1er piso, hay 5 filas de 20 lugares.

El número total de autos que pueden estar en esto será 5 * 20 = 100 autos.

Para el segundo y tercer piso, tenemos 4 filas de 15 cada una.

El número total de autos aquí será 2 (15 * 4) = 2 * 60 = 120 autos

El número total de automóviles cuando está completamente ocupado es, por tanto, = 100 + 120 = 220 automóviles

8 0
3 years ago
You plan to go to a technical school, and there are two options in your city. School A will charge you $750 per semester for tui
vichka [17]
For one semester a School A-

750 + 200 = 950

For one semester at School B-
10 percent off of 1,000 is 900

School A- $950
School B- $900


3 0
3 years ago
Fran baked 300 cookies for her bakery.15% of the cookies were oatmeal raisin.25% were snickerdoodle and the rest were chocolate
Masteriza [31]

Answer:

180

Step-by-step explanation:

15% of 300 is 45.

25% of 300 is 75.

45+75 is 120.

300-120 is 180

5 0
3 years ago
Joan’s washing machine tub is a cylinder with a height of 17 in. and a diameter of 22 in. Her washer was half full of water when
xxMikexx [17]
Find the volume of the cylinder and divide by 2:

V = pi * r^2 * h

V = 3.14 * 11^2 * 17

V = 6458.98

Divide by 2 since it's half full:

6458.98 / 2 = 3229.49

Now divide it by 46.2 to see how long it will take to drain out:

3229.49 / 46.2 = 69.902

So it will take approximately 70 seconds to drain out.
4 0
3 years ago
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