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3 years ago

X+y+z=2 2x+y-z=5 X-y+z=-2

Mathematics

1 answer:

Debora [2.8K]3 years ago

5 0

Answer:

x=2-y-z

x=5/2-y/2+z/2

x=-2+y-z

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Help Please . its due in 5 hours and i cant find answers

dolphi86 [110]

Answer:

39 pi cubic inches

Step-by-step explanation:

The volume of a cone is (1/3)(area of the base)(height).

$V=\frac{1}{3}Bh$

Find the area of the circular base. The circumference of a circle is $C=2\pi r$ , so

$2\pi r = 6\pi\\\\r=3$

Now that you know the radius of the circular base, you can find its area:

$A=\pi r^2 = \pi(3^2)=9\pi$

The height of the cone is 13. Time to use the volume formula.

$V=\frac{1}{3}Bh\\\\V=\frac{1}{3}(9\pi)(13)\\\\V=39\pi$

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3 years ago

Which unit of measure is the most reasonable to measure the length from your house to the grocery store?

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D.miles
Because the grocery store should be a few miles from your home.

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3 years ago

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Afina-wow [57]

We need to see the picture of the problem

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3 years ago

Evaluate. 10 • [2 + (24 – 8)] ÷ 4 * A. 85 B. 9 C. 42 D. 45

ludmilkaskok [199]

$\bf 10\cdot [2+(24-8)]\div 4\implies \stackrel{\mathbb{PEMDAS}}{10\cdot [2+(16)]\div 4}\implies 10\cdot [18]\div 4
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4 years ago

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What is the solution to the system of equations below? y = negative one-third x + 9 and y = two-thirds x minus 12 (21, 2) (21, –

lora16 [44]

Answer:

(21, 2 )

Step-by-step explanation:

Given the 2 equations

y = - $\frac{1}{3}$ x + 9 → (1)

y = $\frac{2}{3}$ x - 12 → (2)

Substitute (2) into (1)

$\frac{2}{3}$ x - 12 = - $\frac{1}{3}$ x + 9 ( add $\frac{1}{3}$ x to both sides )

x - 12 = 9 ( add 12 to both sides )

x = 21

Substitute x = 21 into either of the 2 equations and evaluate for y

Substituting into (2)

y = $\frac{2}{3}$ × 21 - 12 = 14 - 12 = 2

Solution is (21, 2 )

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4 years ago