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fomenos
3 years ago
12

Write an expression that can be used to multiply 6x198 mentally

Mathematics
2 answers:
RoseWind [281]3 years ago
8 0
 Do a mental sum for 6 x 200 (1200) then subtract 6<span>x 2 (12) to give you 1188.</span>
vagabundo [1.1K]3 years ago
7 0
(6x100)+(6x90)+(6x8)

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Which line is perpendicular to a line that has a slope of -1/3?
Sliva [168]

Answer:

Option (c)

Step-by-step explanation:

Slope of a line that passing through two points M(-1, 4) and N(2, -5),

m_1 = \frac{y_2-y_1}{x_2-x_1}

   = \frac{-1-2}{4+5}

   = -(\frac{3}{9})

   = -\frac{1}{3}

To find the line perpendicular line to MN we will use the property,

m_1\times m_2=-1

Where m_1 and m_2 are the slopes of two perpendicular lines.

Slope of line perpendicular to MN (m_2) will be,

-\frac{1}{3}\times m_2=-1

m_2=3

Slope of line joining two points J(-3, -4) and K(3, -2),

Slope = \frac{-4+2}{-3-3}=\frac{1}{3}

Slope of line joining two points A(-3, 2) and B(3, 0)

Slope = \frac{2-0}{-3-3}=-\frac{1}{3}

Slope of the line joining points E(0, -3) and F(2, 3),

Slope = \frac{-3-3}{0-2} = 3

Therefore, line EF is perpendicular to the line MN.

Option (c) is the answer.

8 0
3 years ago
What is the velocity of an object that has a mass of 92 kilograms a momentum of 184 kg*m/s
lisabon 2012 [21]
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6 0
4 years ago
Jamie made a scale drawing of his apartment building. The
Westkost [7]

Answer:

d) 30 inches

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7 0
3 years ago
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Examine the system of equations.
earnstyle [38]

Answer:

The correct answer is B(2)

Step-by-step explanation:

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3 years ago
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What is the product of 3*the square root of 6 and 5*the square root of 12 in simplest radical form
ira [324]

√
6
⋅
√
15
=
3
√
10

Explanation: By radical laws,
√
a
⋅
√
b
=
√
a
b
.
Using this law:
√6⋅√15
=√90

√90 has 9, a perfect square, as one of its factors, so it can be simplified.
√90
=√9⋅10
=√9⋅√10

=3√10
8 0
3 years ago
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