3 years ago

-3x+10y=-20 -8x+2y=11 elimination method

Mathematics

1 answer:

Semenov [28]3 years ago

5 0

(-75/37, -193/74) is your answer .-.

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A fertilizer has the analysis of 12-24-20. How many pounds of N, P, and K are there in the 3000 lbs. of fertilizer?

grigory [225]

Answer:

$W_N=642.857ibs$

$W_P=1285.714ibs$

$W_K=1071.43ibs$

Step-by-step explanation:

From the question we are told that:

Ratio of NPK $R=12-24-20.$

Weight $W=3000 lbs$

Generally the sum of the ratio is given as

$\sum R=12+24+20$

$\sum R=56$

Generally the Weight of N is mathematically given by

$W_N=\frac{12}{56}*3000$

$W_N=642.857ibs$

Generally the Weight of P is mathematically given by

$W_P=\frac{24}{56}*3000$

$W_P=1285.714ibs$

Generally the Weight of K is mathematically given by

$W_K=\frac{20}{56}*3000$

$W_K=1071.43ibs$

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3 years ago

Determine the general solution of cos2X -7cosX -3=0

vovikov84 [41]

Answer:

x=2pi/3 +2pi n, 4pi/3 +2pi n for all integar of n.

Step-by-step explanation:

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3 years ago

-12 + 2a = -6(1 + a) + 8a

valkas [14]

-12 + 2a = -6 (1+a)?
Answer is 0 = 6

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2 years ago

Please help I’ll give brainiest!!

Alchen [17]

Answer:

m(x)=-1/5x+2.5

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3 years ago

Read 2 more answers

Combing like terms 7 th grade

Aliun [14]

Answer:

Basically you just add the like terms together. Like terms are terms that have the same power, like 1, or 2 to the second power. x has a power of zero.

Step-by-step explanation:

Brainliest pls, ty

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3 years ago