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qaws [65]
3 years ago
5

Gabriel is making a mixer of compost and soil to use for a special plant he wants his final mix to be 2 parts compost to 8 parts

potting soil he wants to end up with 12 kilograms of mix. How many kilograms of compost should Gabriel use?
Mathematics
2 answers:
wlad13 [49]3 years ago
5 0

Answer:

Gabriel should use 2.4 kilograms of the compost.

Step-by-step explanation:

Here, the ratio of Compost : Potting Soil  = 2 : 8

Also, total weight of the mix = 12 kg

Let us assume the common factor in the ratio  = m

So, the amount of compost used in the mix = 2 x m = 2m

Also, the amount of Potting soil used in the mix = 8 x m = 8m

Weight of Compost + Weight of potting soil = 12 kg

⇒ 2m + 8 m = 12

or, 10 m = 12

⇒ m = 12/ 10 = 1.2   , or m = 1.2

So, now the weight of the compost used = 2 m = 2 x 1.2 = 2. 4 kg

And the weight of potting soil used = 8 m = 8 x 1.2  = 9 . 6 kg

Hence, Gabriel should use 2.4 kilograms of the compost.

Sever21 [200]3 years ago
4 0

Answer: the answer is 2

Step-by-step explanation:

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Answer:

Step-by-step explanation:

7 0
3 years ago
Leo wants to paint a moral that covers a wall with an area of 1440 sq ft. the height of the wall is 2 fifths of its length. What
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The length of the wall will be 288.... I think
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3 years ago
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At Lakeview middle school,there are 2 homeroom teachers assigned to every 48 students. is the number of stuff at this school pro
Zielflug [23.3K]
Yes becuase constant rate will be 24/1
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6 0
3 years ago
suppose that the distribution for total amounts spent by students vacationing for a week in florida is normally distributed with
pentagon [3]

The probability that the SRS of 10 students will spend an average of between 600 and 700 dollars is 0.8132.

Let x be the total amount spent by students.

x follows normal distribution with mean μ = 650,

                                  standard deviation δ = 120

We take a simple random sample of size n = 10

We are asked to find average spending of 10 students ( x ) is between 600 and 700

We have to find P( 600 <= x <= 700)

According to the sampling distribution of the sample mean x, it follows an approximately normal distribution with mean μ{x} = μ and standard deviation  δ{x} = {δ}/{√n}

Therefore here mean of x,( μ{x} ) = 650 and

standard deviation of x, δ{x} = {120}/{√10} = 37.9473

The probability that the SRS of 10 students will spend an average of between 600 and 700 dollars is,

Let Z= x - μ / δ

Z₁ = 600 - 650 / 37.9473 = -1.32 similarly

Z₂ = 700 - 650 / 37.9473 = 1.32

From standard normal distribution table, P( -1.32 <  x  <  1.32) = 0.8132

The probability that the SRS of 10 students will spend an average of between 600 and 700 dollars is 0.8132

To learn more about Normal distribution click here:

brainly.com/question/15103234

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3 0
1 year ago
A motorboat travels 448 kilometers in 8 hours going upstream and 440 kilometers in 5 hours going downstream. What is the rate of
liubo4ka [24]

9514 1404 393

Answer:

  • boat: 72 km/h
  • current: 16 km/h

Step-by-step explanation:

The speed difference between boat and current is the upstream rate:

  (448 km)/(8 h) = 56 km/h

The sum of speeds of boat and current is the downstream rate:

  (440 km)/(5 h) = 88 km/h

The rate of the boat is half the sum of these:

  (56 +88)/2 = 72 . . . km/h

The rate of the current is half their difference:

  (88 -56)/2 = 16 . . . km/h

The rate of the boat is 72 km/h; the rate of the current is 16 km/h.

4 0
3 years ago
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