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Sergeeva-Olga [200]

3 years ago

13

Solve using substitution method 2x+y= -2 5x+3y= -8

2 answers:

Studentka2010 [4]3 years ago

5 0

Answer:

x = 2

y = -6

Substitutional Answer: ( 2 , -6 )

Svetach [21]3 years ago

3 0

Step-by-step explanation:

Form the third equation from the first equation... Replace the third equation on the second to get the value of x.. Name the value of x as the fourth equation... Replace the fourth equation on the third to get the value of y

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s2008m [1.1K]

$The\ slope-intercept\ form:\\\\y=mx+b\\\\m-the\ slope;\ b-the\ y-intercept\ form$

$the\ slope:\\\\m=\frac{5\ miles}{1.4\ hours}=\frac{50}{14}\ mph=\frac{25}{7}\ mph\\\\so,\ therefore:\\\\\boxed{y=\frac{25}{7}x}$

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3 years ago

E) x⁴ - 3x²y² + 9y²

IrinaVladis [17]

Answer:

x

4

+9y

2

u

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b−3x

2

y

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Step-by-step explanation:

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3 years ago

Una editorial quiere publicar un libro de paisajes del mundo con imágenes en color.

quester [9]

Answer:

asd

Step-by-step explanation: English pls?

3 0

3 years ago

a sculpture is formed from a cylinder resting on top of a cuboid. the cylinder has a radius 40cm and height 70cm. the cuboid mea

frosja888 [35]

<u>Answer-</u>

$\boxed{\boxed{\text{Mass}=10.0447256\ ton}}$

<u>Solution-</u>

The dimensions of the cuboid is, 80×80×140 cm

So, its volume will be $=80\times80\times140=896000$ cm³

The dimensions of the cylinder is, radius = 40cm, height = 70cm

So, its volume will be $\pi r^2h=\pi\times40^2\times70=351792$ cm³

Total volume,

$V=V_{\text{Cylinder}}+V_{\text{Cuboid}}\\\\=351792+896000\\\\=1247792\ cm^3$

As we know,

$\Rightarrow \text{Density}=\dfrac{\text{Mass}}{\text{Volume}}$

$\Rightarrow \text{Mass}=\text{Density}\times \text{Volume}$

$\Rightarrow \text{Mass}=8.05\times 1247792=10044725.6\ g$

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8 0

4 years ago

5x2 + 3y2 = 68<br> 4x2-2y2 = -16

AlladinOne [14]

Step-by-step explanation:

multiply ,1 st x 2 and 2nd x 3

so,

10 X2 + 6y2 = 136

12 X2 - 6y2 = - 48

________________

22 X 2 = 8 8

X 2 = 88 / 22

X2 = 44

X= ± 2✓ 11

y 2= 96

y = ± 4✓ 6

6 0

3 years ago