4 years ago

Use the substitution method to slove the system of equations 2x-y=6 2x-2y=4

Mathematics

1 answer:

tresset_1 [31]4 years ago

4 0

The correct answer is A to this question

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The perimeter of a rectangular garden is 374.

marusya05 [52]

Answer:

The width is 88

Step-by-step explanation:

Perimeter of a rectangle: 2L + 2W

Step 1: Solve for W

374 = 2(99) + 2W

374 - 198 = 198 + 2W - 198

176 / 2 = 2W / 2

88 = W

Answer: The width is 88

3 0

3 years ago

Find CD if C(0,3) and D(4,7)

weeeeeb [17]

$C(0,3) \\
x_1=0 \\
y_1=3 \\ \\
D(4,7) \\
x_2=4 \\
y_2=7 \\ \\
\overset{\underline{\ \ \ \ }}{CD} =\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}=\sqrt{(4-0)^2+(7-3)^2}= \\
=\sqrt{4^2+4^2}=\sqrt{16+16}=\sqrt{16 \times 2}=4\sqrt{2} \\ \\
\boxed{\overset{\underline{\ \ \ \ }}{CD} = 4\sqrt{2}}$