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shtirl [24]
3 years ago
8

Solve each system by elimination 5x + y - 2z = -12

Mathematics
1 answer:
kumpel [21]3 years ago
6 0
X = -12 - y + 2z / 5

I hope this helps. :)
You might be interested in
Plz help the ones with question marks
3241004551 [841]

Answer:

1(5/16)=1.3125

7(5/16)=7.3125

26(5/16)=26.3125

Step-by-step explanation:

Given that 5/16=0.3125, the mixed fraction 1(5/16)=1+(5/16)=1+0.3125=1.3125

Also, 7(5/16)=7+(5/16)=7+0.3125=7.3125

Furthermore,

26(5/16)=26+(5/16)=26+0.3125=26.3125

In the same vein, given that 4/15=0.266

1(4/15)=1+(4/15)=1+0.266=1.266

17(4/15)=17+(4/15)=17+0.266=17.266

23(4/15)=23+(4/15)=23+0.266=23.266

7 0
3 years ago
A 15° sector in a circle has an area of 11.9 m2. What is the area of the circle?
DaniilM [7]
<span>A 15° sector in a circle has an area of 11.9 m2. What is the area of the circle?
The area of the circle will be found as follows:
the fraction of the sector=15/360=1/24
the area of the circle will be:
area=(fraction of the circle)/(fraction of the sector)*(area of the sector)
=1/(1/24)</span>×11.9
=285.6 m²
5 0
3 years ago
Left parenthesis 5 plus 2 square root of 6 right parenthesis squared = a plus b square root of 6 then the value of a and b are
Ganezh [65]

Answer:

The values of a and b are 33 and \frac{20\sqrt{3}}{3}, respectively.

Step-by-step explanation:

The statement is equivalent to the following mathematic expression:

\left(5 + 2\sqrt{2})^{2} = a + b\cdot \sqrt{6} (1)

By definition of the perfect square trinomial:

25 + 20\cdot \sqrt{2} + 8 = a + b\cdot \sqrt{6}

33 + 20\sqrt{2} = a + b\cdot \sqrt{6}

And by direct comparison we have the following system:

a = 33 (2)

b\cdot \sqrt{6} = 20\sqrt{2} (3)

By (3), we solve for b:

b = \frac{20}{\sqrt{3}}

b = \frac{20\sqrt{3}}{3}

The values of a and b are 33 and \frac{20\sqrt{3}}{3}, respectively.

6 0
3 years ago
Find the value of x. Round to the nearest tenth.<br> PLEASE HELP ME!!
Mekhanik [1.2K]

Answer:

<h2>x = 4.1 cm</h2>

Step-by-step explanation:

Use the Pythagorean theorem:

leg^2+leg^2=hypotenuse^2

We have

leg=x,\ leg=15.6cm:2=7.8cm,\ hypotenuse=8.8cm

Substitute:

x^2+7.8^2=8.8^2

x^2+60.84=77.44          <em>subtract 60.84 from both sides</em>

x^2=16.6\to x=\sqrt{16.6}\\\\x\approx4.1\ cm

7 0
3 years ago
At a local mini-mart, the cost of a bag of trail mix at the corner store is $0.90, and the cost of a bag of chips is $1.45. What
Lilit [14]

Answer:

0.90x + 1.45y

Step-by-step explanation:

You put the vaiable with the price and add the 2 together to get the total.

Have a great day!

Please rate!

8 0
2 years ago
Read 2 more answers
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