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Yuki888 [10]
3 years ago
13

Vhat is the solution to the following system? 3x+10y- 12z = 40 X-5y = 0 X-4z = 0

Mathematics
1 answer:
Nitella [24]3 years ago
3 0

Answer:x=20

y=4

z=5

Step-by-step explanation:the third equaiton times by 3 ,so we can get 3x-12=0

and along with the first equation we can get y=4

and the second equation x=20

the third equation z=5

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Can someone please help I need a clear explanation on how to solve this equation.
nikitadnepr [17]
B = amount of students who chose Bulldog

n = amount of students who chose lion

t = amount of students who chose tiger

so.. "t" chose tiger, ok

"<span>Four times as many students chose Bulldog as chose Tiger"
namely, if "t" chose tiger, then 4 times that many chose Bulldog, thus

b = 4t

"</span><span>Twice as many students chose Lion as chose Tiger"
namely, if "t" students chose tiger, twice as many chose lion

n = 2t

now, we know a total of 273 students were surveyed, thus

</span>\bf \begin{cases}&#10;b+n+t=273\\&#10;\boxed{4t}+\boxed{2t}+t=273&#10;\end{cases}&#10;\\\\\\&#10;7t=273\implies t=\cfrac{273}{7}\impliedby \textit{that many chose \underline{tiger}}<span>
</span>
6 0
4 years ago
Read 2 more answers
7. A chemist weighed three separate test samples at 0.17 gram, 0.204 gram, and 2.3 grams. What is the total weight of the three
ale4655 [162]
2.674 with all of them added together. If you include sig figs it would be 2.7
6 0
3 years ago
What is the mean mode midean and rage of 78 86 88 79 88 88 95 92
juin [17]

Median: Order the numbers from least to greatest and look in the center for the median; if two numbers add together than divide by 2

78,79,86,88,88,88,92,95, so the median is 88 because when 2 numbers are the same, you can just take the shortcut and say it because you are going to get the same number

The mode is 88

The mean is 86.75

And the range is 17

Can I have brainliest if it is correct plz?

7 0
4 years ago
Read 2 more answers
Write the equation 3x+2=4x²​ in standard form.
nignag [31]

Answer:

Write the Equation in Standard Form 3x+2=4x^2. 3x+2=4x2 3 x + 2 = 4 x 2. To write an equation in standard form, move each term to the left side of the equation ...

Missing: 4x²​ ‎| Must include: 4x²​

Step-by-step explanation:

Write the Equation in Standard Form 3x+2=4x^2. 3x+2=4x2 3 x + 2 = 4 x 2. To write an equation in standard form, move each term to the left side of the equation ...

Missing: 4x²​ ‎| Must include: 4x²​

8 0
3 years ago
The mold for a cylinder has a diameter of 4in and 6in tall what is the value of the cylinder mold in the nearest tenth
Roman55 [17]

Answer:

75.4

Step-by-step explanation:

3.14*2^2*6

4 0
3 years ago
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