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masha68 [24]
3 years ago
7

Solve for y a. 4x + 5y = 25

Mathematics
1 answer:
AfilCa [17]3 years ago
5 0

Answer:

y = -4/5x + 5

Step-by-step explanation:

In order to solve for y, we need to isolate the variable. First, let's subtract 4x on each side. After doing said step, we should now have this equation:

5y = -4x + 25

Next, we need to divide 5 on each side, giving us this new equation:

y = -4/5x + 5

There you go! Let me know if I did anything wrong ^-^

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The Trollis brothers were building a brick step from their mom's back door to her back patio.The width of the step was 14 inches
DanielleElmas [232]
Since volume=length*width*height you can set up the problem like
v=14*(3*14)*10
after multiplying all that you get
v=5880 inches cubed
3 0
3 years ago
Find the MAD for this set of data.
Nostrana [21]

Answer:

Hence MAD=0.8

Step-by-step explanation:

<u>MAD-</u>

MAD is also known as Mean Absolute Deviation.

We find MAD by the following steps:

  • Firstly we find the mean of the data
  • Then we subtract each entry from the mean to obtain the deviation
  • Then find the absolute value of the deviation which is also known as absolute deviation.
  • Finally we find the mean of the absolute deviation.

Now we are given a table of the absolute deviation we just need to calculate the mean of the absolute deviation.

The absolute deviation is given as:

1    3    1    0    0    1    0    0    1    1

The mean of this is calculated as:

\dfrac{1+3+1+0+0+1+0+0+1+1}{10}=\dfrac{8}{10}=0.8

Hence, MAD=0.8




7 0
3 years ago
Read 2 more answers
(-3×-7)+(4x+7) pleasw solve this
exis [7]
First do the equations in the parentheses 

(21)+(28) the first one isn't negative anymore because a negative times a negative is a positive. 
Now we just add them, 21+28=49
5 0
3 years ago
Read 2 more answers
PLS HELP ME GEOMETRY <br> I got 180 and 270 and both were incorrect
krok68 [10]

Answer:

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>
  • This is a equilateral triangle
  • So all sides and angles are equal

Let one angle=x

{:}\longrightarrow\sf x+x+x=180

{:}\longrightarrow\sf 3x=180

{:}\longrightarrow\sf x={\dfrac {180}{3}}

{:}\longrightarrow\sf x=60°

7 0
3 years ago
I need this answered
omeli [17]

Answer:

sum of all angle of triangle is equal to 180 degree

X + 34 + 31 =180

x+65=180

x=180-65

x=115

8 0
3 years ago
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