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erik [133]
3 years ago
11

If 2x+z=2y and 2x+2y+z=20 what is the value of y?

Mathematics
1 answer:
mixer [17]3 years ago
3 0
2x+z=2y\to2x=2y-z\\\\substitute\ to\ 2x+2y+z=20:\\\\(2y-z)+2y+z=20\\2y-z+2y+z=20\\4y=20\ \ \ \ /:4\\y=5\to answer
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Which statements are true? Check all that apply.
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Answer:

A sphere has no faces && the lateral surface of a cylinder is in the shape of a rectangle when unrolled

Step-by-step explanation:

I got it right on edg

6 0
3 years ago
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Can somebody help me with this plz......
adelina 88 [10]

Answer:

He must score 83 in the last test.

Step-by-step explanation:

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5 0
3 years ago
A local hospital currently has 184 male patients. If the ratio of male to female patients is 4:3, how many female patients are t
Afina-wow [57]

There are 138 female patients in the hospital.

<h3>Solving word problems involving ratios.</h3>

The solution to the word problem involving ratios in the given problem can be determined as follows.

From the given information:

The total number of people in the hospital = male + female

= 184 + x(unknown)

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The ratio of males in the hospital is:

\mathbf{184= \dfrac{4}{7} \times x }

\mathbf{184\times 7= 4 x }

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The number of female patients in the hospital can now be computed as:

\mathbf{=\dfrac{3}{7}\times 322}

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Check:

The total number of people in the hospital is:

= 184 + 138

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Learn more about word problems here:

brainly.com/question/13818690

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3 0
1 year ago
BRAINLIEST!!PLEASE HELP ME
Sauron [17]

divide both sides by a

subtract b from both sides

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Can someone explain to me how to find the slope of two points? For example, (2,3) (-4, -4)
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K here you go!!! So, this is the slope formula: m=(y_2-y_1)/(x_2-x_1). We can input the example coordinates given to create: (-4-3)/(-4-2). Then, I can simplify to make -7/-6 or 7/6. You can make it improper or not, up to you or the question. Also, in the part where I inputting the numbers into the formula, it doesn't matter what y-coordinate value or x-coordinate value you use. The slope won't change.

:3
7 0
3 years ago
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