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3 years ago

Help exponents and scientific notation

Mathematics

1 answer:

USPshnik [31]3 years ago

5 0

If you have a whole number move the number of exponents in 10 and move left. If you have a decimal, and the 10 is negative exponent, move to the write.

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Use 2 as a factor to write an expression that is equivalent to the expression 8x+6y .

posledela

2(4x + 3y). You just factor out the two

6 0

3 years ago

Use trigonometry to resolve the following vectors into components. Describe the vectors using vector

Elodia [21]

Answer:

v ≈ (3.28512, 20.74146)

Step-by-step explanation:

v = 21(cos(81°), sin(81°))

v ≈ (3.28512, 20.74146) . . . . (x, y) components

The notation varies among authors. The vector can be written as ...

(r, θ) = (21, 81°)

r∠θ = 21∠81°

r cis θ = 21 cis 81°

v = 21·e^(i·9π/20)

(x, y) ≈ (3.28512, 20.74146)

v = 3.28512i +20.74146j . . . . perhaps this is the vector notation you want (i and j are unit vectors in the x- and y-directions, respectively)

8 0

3 years ago

A factory produces widgets whose length must be within 1.5 mm of an ideal length of 47 mm. A factory supervisor wants to mark ru

Nat2105 [25]

Using absolute value, it is found that:

The situation is described by the following equation: $|l - 47| = 1.5$
The markings should be between 45.5mm and 48.5mm.

---------------------------

The definition of the <em>absolute value function</em> is as follows:

$|x| = x, x \geq 0$

$|x| = -x, x < 0$

----------------------------

The length should be set to 47mm with an allowance of 1.5mm, which means that <u>the absolute value of the difference between the length and 47 should be 1.5</u>, thus:

$|l - 47| = 1.5$

----------------------------

The solutions are:

$l - 47 = -1.5 \rightarrow l = 45.5$

$l - 47 = 1.5 \rightarrow l = 48.5$

The markings should be between 45.5mm and 48.5mm.

A similar problem is given at brainly.com/question/24514895

3 0

3 years ago

Chris plants 40 pumpkin seeds in 5 equal rows. how many seeds does Chris plant in each row?

Studentka2010 [4]

40/5=8

You need 8 seeds in each row

5 0

3 years ago

Read 2 more answers

The length of a rectangle is 5 meters longer than the width. Find the length and width if the perimeter is 54 meters.

zhenek [66]

Answer:

length is 16 meters

width is 11 meters

Step-by-step explanation:

Let x = width

Let y= length

y=x+5 because length is 5 meters more

2(x+y)=54

2(x+x+5)=54 substitution

2(2x+5)=54 4x+10=54 simplify

4x=44

x=11

substituting: y=11+5=16

therefore,

length is 16 meters

width is 11 meters

5 0

1 year ago

Read 2 more answers