2 years ago

Write the following expression in standered form. -3•2•a+5(-7b)+(12•c•4)

Mathematics

1 answer:

Alex2 years ago

6 0

Answer:

−6a − 35b + 48c

Step-by-step explanation:

You do pemdas and if you know Pemads you will get your anwser

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Select the BEST classification for square root .0081 . A) irrational B) rational C) imaginary D) complex

Reika [66]

Answer:

B) Rational

Step-by-step explanation:

The square root of .0081 is .09, which is a very real number

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3 years ago

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Select each correct answer.

egoroff_w [7]

A) reflect graph over x-axis (minus in front)
e) compress the graph to the x-axis (coefficient 1/2)
f) translate the graph to the right (x-9), minus between x and 9.

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3 years ago

What is the equation of the line perpendicular to y=2x+3.14 going through the points (2,4)?

inessss [21]

Answer:

$x+2y-10=0$

Step-by-step explanation:

Consider an equation: $y=mx+c$

Here, m is the slope of the line and c is the y-intercept.

Given equation is $y=2x+3.14$

Here, slope is $m=2$

As product of slopes of two perpendicular lines is equal to $-1$ , slope of the required line is $m_1=\frac{-1}{m}=\frac{-1}{2}$ .

Let $(x_1,y_1)=(2,4)$

Equation of the required line is $y-y_1=m_1(x-x_1)$

$y-4=\frac{-1}{2}(x-2)\\2(y-4)=-1(x-2)\\2y-8=-x+2\\x+2y-8-2=0\\x+2y-10=0$

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3 years ago

The number 360 is increased by 75%. The result is then decreased by 50%. What is the final number

frozen [14]

Answer:

i believe that it is 45

Step-by-step explanation:

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3 years ago

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You and 4 friends meet to have dinner at your favourite restaurant. Everyone decides to order the nightly special. Write an expr

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Answer:

Step-by-step explanation:

1 plus 4 is 5 and everyone is ordering the same thing, which is known as any variable, so in this case, x. So, you get 5x

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3 years ago