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3 years ago

Which values are solutions to the inequality below? Check all that apply.

Mathematics

2 answers:

zvonat [6]3 years ago

6 0

+5 and -5 because you root 25 which gives you + 5 or - 5

baherus [9]3 years ago

6 0

A. B. D. Hope this helps

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Solve the quadratic equation 4X^2+ 3x-27=0

maxonik [38]

Answer:

x = -3 or 9/4

Step-by-step explanation:

(x+3)(4x-9)

or use the quadratic formula

5 0

2 years ago

What is 26/4, 6.45, 6 2/5, and 50/8 in order from least to greatest?

blagie [28]

26/4=6.50

6.45=6.45

6and 2/5=6.40

50/8=6.25

so it should be

least- greatest

50/8, 6 & 2/5, 6.45, 26/4

7 0

3 years ago

The general solution of 2 y ln(x)y' = (y^2 + 4)/x is

Sav [38]

Replace $y'$ with $\dfrac{\mathrm dy}{\mathrm dx}$ to see that this ODE is separable:

$2y\ln x\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{y^2+4}x\implies\dfrac{2y}{y^2+4}\,\mathrm dy=\dfrac{\mathrm dx}{x\ln x}$

Integrate both sides; on the left, set $u=y^2+4$ so that $\mathrm du=2y\,\mathrm dy$ ; on the right, set $v=\ln x$ so that $\mathrm dv=\dfrac{\mathrm dx}x$ . Then

$\displaystyle\int\frac{2y}{y^2+4}\,\mathrm dy=\int\dfrac{\mathrm dx}{x\ln x}\iff\int\frac{\mathrm du}u=\int\dfrac{\mathrm dv}v$

$\implies\ln|u|=\ln|v|+C$

$\implies\ln(y^2+4)=\ln|\ln x|+C$

$\implies y^2+4=e^{\ln|\ln x|+C}$

$\implies y^2=C|\ln x|-4$

$\implies y=\pm\sqrt{C|\ln x|-4}$

4 0

2 years ago

Write as a money amount and as a decimal in terms of dollars 33/100

Mekhanik [1.2K]

Answer:

$0.33 or 33¢

Step-by-step explanation:

33/100 = 0.33 = $0.33

5 0

2 years ago

Veronica has 7 yards of ribbon. Each bow requires 3/4 of a yard ribbon. How many bows will she be able to make with the ribbon s

Sonbull [250]

Answer && Step-by-step explanation:

7 yards == 4/4

by simple arithmetic remove 3/4 from 7 until you can no longer obtain 3/4 from it

7 => 6*1/4

6*1/4=>5*2/4

5*2/4=>4*3/4

4*3/4=>4

4=> 3*1/4

3*1/4=>2*2/4

2*2/4=>1*3/4

1*3/4=>1

1=>1/4

1/4 remains and 9 bows were made

8 0

2 years ago