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labwork [276]
3 years ago
12

Can somebody please help me with this:)

Mathematics
1 answer:
max2010maxim [7]3 years ago
8 0

Answer: 4=-2x -1 and y=-1 2x

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11Alexandr11 [23.1K]
Rounded to one decimal place means to round to the nearest tenth (i.e. to the nearest 0.1)

4.25 (rounded to the nearest tenth) = <u><em>4.3</em></u>
8 0
3 years ago
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If the second number is subtracted from the sum of the first number and 2 times the third number, the result is 1. The thrid num
weeeeeb [17]

Answer:

<h2>x = 0, y = 5, z = 3</h2>

Step-by-step explanation:

x,\ y,\ z-\text{three numbers}\\\\\left\{\begin{array}{ccc}(x+2z)-y=1&(1)\\z+2x=3&(2)\\x+3y+z=18&(3)\end{array}\right\\\\(2)\\z+2x=3\qquad\text{subtract}\ 2x\ \text{from both sides}\\z=3-2x\qquad(*)\\\\\text{Substitute}\ (*)\ \text{to (1) and (3)}\\\\\left\{\begin{array}{ccc}x+2(3-2x)-y=1&\text{use the distributive property}\\x+3y+(3-2x)=18\end{array}\right

\left\{\begin{array}{ccc}x+(2)(3)+(2)(-2x)-y=1\\x+3y+3-2x=18&\text{subtract 3 from both sides}\end{array}\right\\\left\{\begin{array}{ccc}x+6-4x-y=1&\text{subtract 6 from both sides}\\(x-2x)+3y=15\end{array}\right\\\left\{\begin{array}{ccc}(x-4x)-y=-5\\-x+3y=15\end{array}\right\\\left\{\begin{array}{ccc}-3x-y=-5&\text{multiply both sides by 3}\\-x+3y=15\end{array}\right

\underline{+\left\{\begin{array}{ccc}-9x-3y=-15\\-x+3y=15\end{array}\right}\qquad\text{add all sides of the equations}\\.\qquad-10x=0\qquad\text{divide both sides by (-10)}\\.\qquad\boxed{x=0}\\\\\text{Put it to the second equation:}\\-0+3y=15\\3y=15\qquad\text{divide both sides by 3}\\\boxed{y=5}\\\\\text{Put the value of}\ x\ \text{to}\ (*):\\\\z=3-2(0)\\\boxed{z=3}

7 0
3 years ago
Complete the equation 0.037 x ? = 37 pls hurry
OleMash [197]

Answer:

The missing number is 1000

Step-by-step explanation:

0.037 × ? = 37

Divide both sides by 0.037.

a = \frac{37}{0.037}

Expand \frac{37}{0.037} by multiplying both the numerator and the denominator by 1000.

a = \frac{37000}{37}

Divide 37000 by 37 to get 1000.

a = 1000

Hope it helps and have a great day! =D

~sunshine~

4 0
2 years ago
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schepotkina [342]

Answer:

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6 0
3 years ago
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What are the coordinates of the vertex of the parabola described by the equation below?
yanalaym [24]
Quick answer is (3,5)
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