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kobusy [5.1K]
3 years ago
9

Can someone please help

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
4 0
E = 1/2(1.59 × 10^3)([2.7 × 10^1]^2)
plug it in to the o'l calculator and ¡bam!
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Fertiliser is sold in 100kg bags labelled with the amount of nitrogen (N), phosphoric acid (P2O5), and potash (K2O) present. The
anzhelika [568]

Answer:

We need 5 bags of Vigoro Ultra Turf and 4 bags of Parkers Premium fertilizer.

Step-by-step explanation:

Let's first list the percentage compositions of each fertilizer type:

<u>Vigoro Ultra Turf:</u>

Nitrogen (N) = 29 kg

Phosphoric Acid (P2O5) = 3 kg

Potash (K2O) = 4 kg

<u>Parkers Premium</u>

Nitrogen (N) = 18 kg

Phosphoric Acid (P2O5) = 25 kg

Potash (K2O) = 6 kg

We can set up simultaneous equations to find out the amount of 100 kg bags of each fertilizer needed:

x = Vigoro Ultra turf (one bag)

y = Parkers Premium (one bag)

29x + 18y = 217   -Equation 1

3x + 25y = 115     -Equation 2

4x + 6y = 44        -Equation 3

Solving for x and y, we get:

x = 5

y = 4

This means we need 5 bags of Vigoro Ultra Turf and 4 bags of Parkers Premium fertilizer.

6 0
4 years ago
Write equivalent expressions for x^7×x^-2 and x^7/x^2. What do you notice? Explain how your results relate to the properties of
USPshnik [31]
X^5 & x^5. both of the answers are the same even though the expressions were different at the start. the results relate to the addition property from multiplication (with a negative number) and the subtraction property (with positives) from division.

7 0
3 years ago
A store pays 159$ for a garden statue. The store marks up the price by 40%. 1.) what is the amount of mark up ( nearest hundred)
lina2011 [118]

Answer:

Step-by-step explanation:

okay so 40 divided by 159 equals .2515 than you are going to add 159 which gives you 159.2515 and than round that to the nearest 100

4 0
4 years ago
The price of a bracelet was decreased by 30% to £63. <br> What was the price before the decrease?
Dmitrij [34]

Answer:

90

Step-by-step explanation:

If the original price of a bracelet was a

70%a = 63

70/100a = 63

a = 63 × 100/70

a = 90

3 0
4 years ago
Please help i don’t understand this
nika2105 [10]

Answer:

slope of line one: 2/4 or 1/2

line two: 6/1

line 3: 6/3 or 2

line 4: -4/1

to find the slope of a line, you have to use rise/run the number of space going along the y-axis is the rise, and the space of the points on the x-axis is the run.

hope this helps!

8 0
3 years ago
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