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dezoksy [38]
3 years ago
14

How do I do 9 and 10? If you can, write the steps too please and thanks

Mathematics
1 answer:
Alona [7]3 years ago
7 0
Y = 3x^2 + 6x -2
y = 3(x^2 + 2x ) - 2    complete the square on the x^2 + 2x.
y = 3(x^2 + 2x + 1) -2-3
y = 3(x+1)^2 -5        vertex is (-1, -5); AOS is x = -1; opens upward

y = x^2 + 9x + (81/4) this will factor
y = (x + 9/2)^2          vertex is (-9/2, 0); AOS is x = -9/2; opens upward
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Find the slope and intercepts of the line, 5x-6y=30.
soldi70 [24.7K]
The slope is 5/6.
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The y-intercept is (0, -5)
5 0
3 years ago
If mZ1 = (4x + 2)° and m/3 = (5x – 15)", what is the value of a?
posledela

Answer:

17

Step-by-step explanation:

angle one and angle three are equal to each other

so if you set the equations equal to each other

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move the 4x the right by subtracting it giving you 1x

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8 0
3 years ago
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Alex777 [14]
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white socks on tuesday - 5/9 or .55%

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Number of black socks on Monday: 3
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Probability of white socks on Tuesday:
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5 0
3 years ago
Read 2 more answers
The picture shows a circular clock face.
marysya [2.9K]

Answer:

[C] 25π square inches

Step-by-step explanation:

<u><em>Given that:</em></u>

<em>the long hand of the clock is about 5 inches long.</em>

<u><em>To Find:</em></u>

<em>What is the approximate area of the clock face?</em>

<u><em>Solve:</em></u>

<em>Formula - </em><em>A =πr²</em>

<em>Note that;</em>

<em>π = 3.14 (about)</em>

<em>Radius - 5 inches</em>

<em>A =πr²</em>

<em>A = 3.14(5)²</em>

<em>A = 3.14(25)</em>

<em>A = 78.5</em>

<em>Now let see the answer choices:</em>

<em>A.  5π square inches                     ≈   5(3.14) = 15.7</em>

<em>B. 10 π square inches                    ≈  10(3.14) = 31.4</em>

<em>C. 25 π square inches                    ≈  25(3.14) = 78.5</em>

<em>D. 100 π square inches                    ≈ 100(3.14) = 314</em>

<em />

<em>Hence, the answer is [C] 25 π square inches </em>

<em />

<u><em>Kavinsky~</em></u>

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2 years ago
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Multiple choice question!! Please help
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The solution is (1,3). This is where the two lines intersect.
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