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V125BC [204]
3 years ago
9

What is the x-intercept 1/2x - 3y = 8

Mathematics
2 answers:
Strike441 [17]3 years ago
6 0
X intercept is when y = 0
so 1/2 x - 0 = 8
solving for x
1/2 x = 8
multiply both sides by 2
x = 16 is the y intercept
Georgia [21]3 years ago
5 0
So first make it into slope intercept form y=mx+b

1/2x-3y=8
subtract 1/2x from both sides
-3y=8-1/2x
multiply both sides by -1
3y=1/2x-8
divide both sides by 3
y=1/6x-8/3

the x intercept is when y=0
so set y to zero
0=1/6x-8/3
add 8/3 to both sides
8/3=1/6x
multiply both sides by 6
16=x

the x intercept is 16
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LUCKY_DIMON [66]
The answer to this is B
7 0
3 years ago
How can you solve this system of equations using substitution? <br> -66x-2z=-196<br> 8x+2z=22
Scrat [10]
In the second equation:

Subtract 8x from both sides.

2z = 22 - 8x

Divide 2 on both sides.

z = 11 - 4x

Plug this into the first equation.

-66 - 2(11 - 4x) = -196

-66 - 22 + 8x = -196

Combine like terms.

-88 + 8x = -196

Add 88 to both sides.

8x = -108

Divide 8 on both sides.

x = -13.5

Put this into the second equation.

8(-13.5) + 2z = 22

-108 + 2z = 22

Add 108 to both sides.

2z = 130

Divide 2 on both sides.

z = 65

and

x = -13.5

Hope this helps!
6 0
3 years ago
Can anyone help me with this Midterm Advanced Algebra problem. (DONT ANSWER IF YOUR NOT SURE)
tigry1 [53]

Answer:

y = -1/2x + 13/2

Step-by-step explanation:

The slope of a line that is perpendicular to a line will be a negative reciprocal. When you rewrite 2x-7=8 into slope-intercept form, you get y=2x-8. The negative reciprocal of the slope 2x is -1/2x. There is only one option with this slope. If you're still not sure then you can use a graphing calculator to check this. An online one would be desmos

3 0
3 years ago
Write 622% as a mixed number.
vlabodo [156]

Answer:

Step-by-step explanation:

TO get a fraction from % we need to divide by 100.

622/1 x 1/100= 622/100

Hope this helps :D

6 0
3 years ago
Read 2 more answers
116. use what you know about the area and circumference of circles to answer the questions below. show all work. leave answers i
True [87]

Answer:

28π and 196π

10π and 25π

2500π

A = C/4π

Step-by-step explanation:

The circumference of a circle is the distance around the edge of the circle. To find the circumference, we use the formula C = 2πr. The area of the circle is the amount inside the circle and is found using A = πr². Substitute the relevant values in each situation into the formulas to find the circumference and area.

if the radius of a circle is 14 units, what is its circumference? what is its area?

Substitute r = 14.

C = 2πr = 2π(14) = 28π

A = πr² = π(14)² = 196π

if a circle has diameter 10 units, what is its circumference? what is its area?

Substitute r = 5.

C = 2πr = 2π(5) = 10π

A = πr² = π(5)² = 25π

if a circle has circumference 100π units, what is its area?

Substitute C = 100π to find the radius. Then substitute the radius into the are formula.

C = 2πr

100π=2πr

100 = 2r

50 = r

A = πr² = π(50)² = 2500π

if a circle has circumference c, what is its area in terms of c?

Cole the circumference formula for r. Then substitute the expression into the area formula.

C = 2πr

r = C / 2π

A = πr² = π(C/2π)² = πC/4π² = C/4π

7 0
4 years ago
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