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2 years ago

The energy saving from recycling one glass bottle will power the oven Adam uses to cook the turkey for 7.5 minutes.

1 answer:

8 0

Energy from 1 bottle last 7.5 min

1 glass cost = 2.5 $
Since it cost 5$ for 1 kg and the bottle weight 1/2 kg

6*60 =360 min ( is in 6 hours)

2.5/? =7.5/360

? = 120 $

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Lena and Ras drive to work. Lena drives 24 miles in 1.5 hours. Ras drives 36 km in 1 hour 15 min. Work out the difference betwee

Rudiy27

Answer:

Difference = 3.2 km/h

Step-by-step explanation:

Given that,

Lena drives 24 miles in 1.5 hours. Ras drives 36 km in 1 hour 15 min.

For average speed of Lena,

d = 24 miles = 38.4 km

t = 1.5 h

$v=\dfrac{38.4}{1.5}= 25.6\ km/h$

For average speed of Ras,

d = 36 km

t = 1h 15 min = 1.25 h

$v=\dfrac{36}{1.25}=28.8\ km/h$

Difference = 28.8-25.6

= 3.2 km/h

So, the difference between their average speed is 3.2 km/hr.

7 0

2 years ago

The length of a triangle is eight more than twice its width. The perimeter is 88 feet. Find the dimensions of the rectangle.

Mkey [24]

Answer:

Length = 32 feet

Width = 12 feet

Step-by-step explanation:

From the question;

Width = w

Length = 2w + 8

But the perimeter of a rectangle = 2(l + b)

perimeter = 88 feet

88 = 2(2w + 8 + w)

88 = 2(3w + 8)

88 = 6w + 16

88 - 16 = 6w

72 = 6w

w = 72/6

w = 12 feet

Hence;

Length = 2(12) + 8 = 32 feet

Dimensions of the rectangle is;

Length = 32 feet

Width = 12 feet

5 0

2 years ago

garett uses 5 apples to bake an apple pie on sunday he bkes 2 pies how many apples does garett need on sunday write an equation

Ann [662]

Answer:

2+x=5

Step-by-step explanation:

i think dont bash me

5 0

3 years ago

Anne-Marie earns $530 per week. Calculate her<br> annual salary.

Bess [88]

Step-by-step explanation:

per day earn,=530/7=75.71

per annual=. 75.71 * 365= 27634.15

8 0

2 years ago

How do I solve this question

Tems11 [23]

Answer:

Part 1) $[(250)^{2}+(-400)^{2}+(-250)^{2}+(350)^{2}+(100)^{2}+(-50)]=420,000$

Part 2) The variance is equal to $Variance=70,000$

Part 3) $Standard\ Deviation=265$

Step-by-step explanation:

step 1

Find the mean of the areas

we have

$[2,400,1,750,1,900,2,500,2,250,2,100]$

To find the mean sum all the values and divide by the number of values

The number of values is 6

$[2,400+1,750+1,900+2,500+2,250+2,100]/6=2.150$

The Mean is $2.150$

step 2

For each number subtract the Mean

$[(2,400-2,150),(1,750-2,150),(1,900-2,150),(2,500-2,150),(2,250-2,150),(2,100-2,150)]$

$[(250),(-400),(-250),(350),(100),(-50)]$

step 3

Find the Variance

To calculate the Variance, take each difference, square it, and then average the result

$[(250)^{2}+(-400)^{2}+(-250)^{2}+(350)^{2}+(100)^{2}+(-50)]=420,000$

$Variance=420,000/6=70,000$

step 4

Find the standard deviation

The Standard Deviation is just the square root of Variance

$Standard\ Deviation=\sqrt{70,000} =265$

6 0

3 years ago