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3 years ago

Simplify the expression.

Mathematics

1 answer:

Amanda [17]3 years ago

8 0

Answer:

-1.8f - 19

Step-by-step explanation:

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Round decimals Write the place value of the underline digit

atroni [7]

So all you have to do is look at were the number is is it is in the first spot it is in the tenths place value, second spot hundredth and so

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3 years ago

In the parallelogram below, z = [ ? ]° 124° 2z+16° Helpp!

uranmaximum [27]

2z+16+124=180

2z=180-16-124

2z=40

z=40/2

Z=20°

I hope I helped you ^_^

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2 years ago

Express Jenny's age in terms of a if jenny is three years less than half of Anne's age

Nadusha1986 [10]

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3 years ago

Given a special license plate tag consists of 5 characters for a small country. The first

tigry1 [53]

Answer:

Step-by-step explanation:

Remark

First characters: 6 choices

Second two characters: 25 * 26

Third set of 2: 10 * 10 = 100

6 * 25 * 26 * 100 = 390000

7 0

3 years ago

Find the equation for the plane that contains the line x=−1+3t , y=1+2t, z=2+4t and is perpendicular to the plane containing the

Ivan

Let $L$ be the line given by the vector equation

$(-1,1,2) + \lambda(3,2,4) \ , \lambda \in \mathbb{R}$ .

First, we use the director vectors of the lines L1 and L2 to get the

vector equation of the plane containing them, which we denote by $\Pi_1$ . This is,

$\\\\\Pi_1 : (1,-1,5) + \alpha (2,-1,6) + \beta (1,1,-3) \ , \alpha, \beta \in \mathbb{R}\\\\\\$

We observe that $\vec{N} = (2,-1,6)\times(1,1,-3) = (-3,12,3) \ne (0,0,0)$ . Therefore, the vector equation of $\Pi_1$ defines a plane and $\vec{N}$ is a normal vector to $\Pi_1.$

Finally, the vector equation for the wanted plane, which we denote by $\Pi$ , is

$\Pi : (-1,1,2) + r(3,2,4) + s(-3,12,3), r,s \in \mathbb{R} \ .$

Thus, if $s = 0$ , then $L \subset \Pi$ and since $\vec{N}$ is parallel to $\Pi$ , then it is perpendicular to $\Pi_1$ .

8 0

3 years ago