3 years ago

Based on a farmer’s soil composition he must mix his fertilizer at a certain strength.

1 answer:

5 0

Find 5%, 6%, and 4% of 0.5.

5% of 0.5 = 0.05 * 0.5 = 0.025 of nitrogen
6% of 0.5 = 0.06 * 0.5 = 0.03 of phosphorus
4% of 0.5 = 0.04 * 0.5 = 0.02 of potassium

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Solve y' + 2xy = 2x^3, y(0) = 1

nlexa [21]

Multiply both sides by $e^{x^2}$ , then you get

$e^{x^2}+2xe^{x^2}y=2x^3e^{x^2}$
$\left(e^{x^2}y\right)'=2x^3e^{x^2}$
$e^{x^2}y=\displaystyle2\int x^3e^{x^2}\,\mathrm dx$
$e^{x^2}y=e^{x^2}(x^2-1)+C$
$y=x^2-1+Ce^{-x^2}$

Given that $y(0)=1$ , you have

$1=-1+Ce^0\implies C=2$

so that the particular solution is

$y=x^2-1+2e^{-x^2}$

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4 years ago

Can y'all please help me answer this. Y=2x - 7

ValentinkaMS [17]

Answer:

Step-by-step explanation:

add 7 both sides then divide

6 0

3 years ago

Read 2 more answers

The ratio is 2:5 red beads to blue beads. If you have a TOTAL of 21 beads, how many are red, and how many are blue beads?

creativ13 [48]

Answer:

Number of red beads = 6

Number of blue beads = 15

Step-by-step explanation:

Number of total beads = 21

Ratio of red beads to the blue beads = 2 : 5

Therefore, number of red beads I have = $\frac{2}{2+5}(\text{Total number of beads})$

= $\frac{2}{7}\times 21$

= 6 beads

Number of blue beads = $\frac{5}{2+5}\times (21)$

= $\frac{5}{7}\times 21$

= 15 beads

Therefore, number of red beads = 6

And number of blue beads = 15

5 0

3 years ago

Nathan Alexander wants to purchase ears of corn for a family reunion picnic. A farmers’ market near his home offers six ears of

worty [1.4K]

I think buying 36 ears of corn for $7.20 is the better buy. 6 ears of corn for $1.25 cost .20+ per ear of corn. Buying the 36 count buys them at an even .20. Plus he should have enough for everybody without having to worry about buying more.

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3 years ago

Put decimals in order from smallest to largest and then find the median?

Alika [10]

Answer:

0.11,0.4,0.42,0.5,0.8. The median would be 0.446

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3 years ago