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Alexandra [31]
2 years ago
12

2x + y = -5 how do I solve this

Mathematics
2 answers:
ozzi2 years ago
5 0

Answer:

if you are solving for x the answer is -5/2 and for y answer is 5

Step-by-step explanation:

Gekata [30.6K]2 years ago
3 0
2x + y = -5
2x + y + 5 = - 5 + 5
2x + y + 5 = 0

^ These are the steps and the answer in implicit form.


2x + y + 5
y = - 5 - 2x
y = - 2x - 5

^ These are the steps and answer written in Slope intercept form.


2x + y = -5
2x + 0 = -5
2x = -5
*Divide Borge sides by 2
x = -5/2 or -2.5

^ These are the steps and the answer written to find the x- intercept/zero.


2x + y = -5
2 * 0 + y = -5
y = -5

^ These are the steps/answer written to find the y-intercept.
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3 years ago
PLZ HELP ASAP SOLID GEOMETRY WORD PROBLEMS
yan [13]
The volume of the candle initially is:
V=Ab*h
Area of the base of the cylinder: Ab=pi*r^2
pi=3.14
Radius of the base: r=4 cm
Height of the cylinder: h=6 cm

Ab=pi*r^2
Ab=3.14*(4 cm)^2
Ab=3.14*(16 cm^2)
Ab=50.24 cm^2

V=Ab*h
V=(50.24 cm^2)*(6 cm)
V=301.44 cm^3

The candle melts at a constant rate of:
r=(60 cm^3)/(2 hours)=(120 cm^3)/(4 hours)=(180 cm^3)/(6 hours)
r=30 cm^3/hour

The amount of candle melted off after 7 hours is:
A=(30 cm^3/hour)*(7 hours)
A=210 cm^3

The percent of candle that is melted off after 7 hours is:
P=(A/V)*100%
P=[(210 cm^3)/(301.44 cm^3)]*100%
P=(0.696656051)*100%
P=69.66560510%
Rounded to the nearest percent
P=70%

Answer: 70%

8 0
3 years ago
Whats the slope of the line shown in the graph?
Reil [10]

Answer:

3/2

Step-by-step explanation:

I know this answer is correct, because I did it on edge.

6 0
3 years ago
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qwelly [4]
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3 0
3 years ago
What is the area of an isosceles trapezoid if the length of its shorter base is 18 cm, the length of an altitude is 9 cm, and th
Nimfa-mama [501]
Check the picture below.

since we know the acute angle is 45°, that angle with the bottom base and the slanted line and the altitude make a 45-45-90 triangle, and thus we can get the value of that section at the bottom, as you see in the picture, thus the longer base is 9 + 18 + 9, or 36.

\bf \textit{area of a trapezoid}\\\\
A=\cfrac{h(a+b)}{2}~~
\begin{cases}
a,b=\stackrel{bases}{parallel~sides}\\
h=height\\
---------\\
a=18\\
b=36\\
h=9
\end{cases}\implies A=\cfrac{9(18+36)}{2}
\\\\\\
A=\cfrac{9(54)}{2}\implies A=243

7 0
3 years ago
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