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katrin [286]
3 years ago
7

What is the value of x in the equation 4x + 8y = 40, when y = 0.8?

Mathematics
1 answer:
kherson [118]3 years ago
7 0
You would substitute 0.8 in for y and to get the equation 4x+8(0.8)=40. Then, you would simplify and get 4x+6.4=40. Next you would isolate x by subtracting 6.4 from both sides and get the equation 4x=33.6 and then you would divide both sides by 4 to get x=8.4.

The answer is : x=8.4

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Bernite is selling candy bars for a school fundraiser. The school paid $20.00 for a box of 15 king-size candy bars and Bernite s
irina1246 [14]

Answer:

Step-by-step explanation:

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A.The relationship is linear    true

B.The relationship is nonlinear   false

C.The relationship is always results in a negative profit   false

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1jaiz4 and 21 more users found this answer helpfulcandy sold vs money earned

money earned =  2 dollars * number of bars sold- cost of bars

money earned = 2 b -20

this is an equation of a line

(y= 2x-20)  

A.The relationship is linear    true

B.The relationship is nonlinear   false

C.The relationship is always results in a negative profit   false

it crosses the x axis at 10 candy bars

D.The relationship always result in a positive profit   false

it crosses the x axis at 10 candy bars

E.The relationship is proportional   false

F.The relationship is non-proportional  true  it is a line that does not cross the origin

3 0
2 years ago
In a diagram, X is the midpoint of Segment VZ. VW =5, and VY =20. Find the coordinates of W,X, and Y.
guapka [62]

solution:

x(a_{x},b_{x})is midpoint of vz\\
a_{x}=\frac{a_{v}+a_{z}}{2}=\frac{-12+22}{2}=\frac{10}{2}=5\\
b_{x}=\frac{b_{v}+b_{z}}{2}=\frac{0+0}{2}=0\\
and,\\
x(5,0)\\
w(a_{w},b_{w}),v_{w} and w is on the right of v.\\
a_{w}-a_{v}=5\\
a_{w}-(-12)=5\\
a_{w}+12=5\\
a_{w}=5-12=-7\\
w(-7,0)\\
y(a_{y},b_{y})=20 and y is on the right of v.\\
a_{y}-a_{v}=20\\
a_{y}-(-12)=20\\
a_{y}+12=20\\
a_{y}=20-12=8\\
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7 0
3 years ago
Please answer quickly, thank you for your help
RoseWind [281]

Answer:

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6 0
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