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VLD [36.1K]
3 years ago
5

What is 4x-2y=8 in slope intercept form?

Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0

Answer: y = -2x + 4

Step-by-step explanation: In slope-intercept form or y = mx + b form,

the y is isolated or by itself on the left side of the equation.

So start by subtracting 4x from both sides.

That gives us -2y = 4x - 8.

Notice I put the x term first because in y = mx + b form,

the x term comes first on the left side of the equation.

From here, we divide both sides by -2 to get y = -2x + 4.

DerKrebs [107]3 years ago
6 0
Slope form is y=mx+b
Y=2x-4
m=2, b= -4
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Kathy lives directly east of the park. The football field is directly south of the park. The library sits on the line formed bet
enyata [817]
Look at the picture in the attachment.

Using the Pythagorean theorem, set up a system of three equations:
x^2+y^2=(12+9)^2 \\
12^2+z^2=x^2 \\
9^2+z^2=y^2 \\ \\
x^2+y^2=441 \\
144+z^2=x^2 \\
81+z^2=y^2

\hbox{substitute } 144+z^2 \hbox{ for } x^2 \hbox{ and } 81+z^2 \hbox{ for } y^2 \hbox{ in the first equation:} \\
144+z^2+81+z^2=441 \\
225+2z^2=441 \\
2z^2=441-225 \\
2z^2=216 \\
z^2=\frac{216}{2} \\
z^2=108 \\
z=\sqrt{108} \\
z=\sqrt{36 \times 3} \\
z=6\sqrt{3} \\ z \approx 10.39

81+z^2=y^2 \\
81+108=y^2 \\
189=y^2 \\
\sqrt{189}=y \\
\sqrt{9 \times 21}=y \\
y=3\sqrt{21} \\ y \approx 13.75

a. The library is approximately 10.39 miles (exactly: 6√3 miles) from the park.
b. The park is approximately 13.75 miles (exactly: 3√21 miles) from the football field.

6 0
3 years ago
Read 2 more answers
How could a compass be used to determine if two segments are the same length?
tester [92]

Answer:

I believe that the answer is C

Step-by-step explanation:

:>

8 0
2 years ago
The middle school is 2.72 kilometers from Marsha's house and 1.54 kilometers from Ryan's house. How much farther does Marsha liv
Novosadov [1.4K]

Answer:

1.18 kilometers

Step-by-step explanation:

The middle school is 2.72 kilometers from Marshal house

The school is also 1.54 kilometers away from Ryan house

Therefore the distance of Marshal house from the school can be calculated as follows

= 2.72-1.54

= 1.18 kilometers

6 0
3 years ago
a school custodian walks gymnasium floors measured 20 feet by 20 feet how many square feet did she have to work
Verizon [17]
Hi there.

Area = <em>lw</em>

So, since we have the dimensions, we can just use the formula.

20 · 20 = 400 ft²

Cheers~
4 0
3 years ago
Read 2 more answers
Please help question in the picture
balu736 [363]

Answer:

D

Step-by-step explanation:

D is correct because the sqrt of 91 is 9.5 and 9<9.5<10 makes absolute sense

C is not correct because the sqrt of 33 is 5.7 and 6<5.7<7 does not make sense

B is not correct because the sqrt of 13 is 3.6 and 4<3.6<5 does not make sense

A is not correct because the sqrt of 65 is 8.06 and 7<8.06<8 does not make sense

4 0
2 years ago
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