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3 years ago

12

Chang made 6 identical necklaces each having beads and a pendant. The total cost of the beads and pendants for all 6 necklaces w

as $42.60. If the beads cost a total of $22.20, how much did each pendant cost?

1 answer:

son4ous [18]3 years ago

6 0

Answer:

One pendant costed $3.40

Step-by-step explanation:

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-2i (9 − 3i) − (6 − 10i) as a complex number in standard form.

elixir [45]

The form is
a+bi
a is the real partt
bi is the imaginary part

add complex parts with complex and real with real

treat 'i' as x
remember, i=√-1 so i^2=-1

-2i(9-3i)-1(6-10i)
distribute
-18i+6i^2-6+10i
-18i-6-6+10i
-18i+10i-6-6
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answer is -12-8i

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3 years ago

A rectangular park is 50 meters wide and 90 meters long. Give the length and width of another rectangular park that has the same

larisa [96]

Answer:

$l = 100\,m$ and $w = 40\,m$

Step-by-step explanation:

The formulas for the area and perimeter of a rectangle are, respectively:

$A = w\cdot l$

$p = 2\cdot (w + l)$

The perimeter is equal to:

$p = 2\cdot (50\,m + 90\,m)$

$p = 280\,m$

Area is likewise equal to:

$A = (50\,m)\cdot (90\,m)$

$A = 4500\,m^{2}$

Then, equations are now described:

$A = w \cdot l$

$140\,m = w + l$

Likewise, the equation of area is simplified afterwards:

$A = (140\,m - l)\cdot l$

$A = 140\cdot l - l^{2}$

The area is reduced inasmuch as length is increased. Let assume that length is 100 meters. The length and width are described herein:

$l = 100\,m$ and $w = 40\,m$

7 0

3 years ago

The movie ended at 7:15 p.m. and lasted 2 hours 40 minutes. What time did the movie begin?

nekit [7.7K]

Answer:

The movie started in 4:35 pm

Step-by-step explanation:

the easy way to do this

Step one: subtract 2 hours from 7:15 pm which is 5:15 pm

step two: to subtract 30 min from 5:15 which is 4:45 pm

step three: to subtract 10 min from 4:45 pm which is 4:35 pm

<h3>∴ The movie started in 4:35 pm</h3>

8 0

3 years ago

Read 2 more answers

I’m trying to create a scatter plot but their are 3 sections, student, math, and language arts. Which 2 do I use to create the s

Alisiya [41]

Math and language arts

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3 years ago

45/4 = 12/2f. what is f?

nata0808 [166]

Answer:

Exact Form:

f=8/15

Decimal Form:

f=1.875

Step-by-step explanation:

45×2f = 4×12

90f = 48

48/90 = 24/45 = 8/15

6 0

3 years ago