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3 years ago

-5(4-2j) in its simpilest form

Mathematics

1 answer:

insens350 [35]3 years ago

5 0

Answer:

10j + v - 20

Step-by-step explanation:

~Thank you have a nice day/night~

~Evelyn

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Julia is standing 2 feet away from a lamppost. If she casts a shadow of 5 feet and the light makes a 20° angle relative to the g

givi [52]

Answer:

2.5477 feet

Step-by-step explanation:

Refer the image attached to understand my solution.

BC = height of lamppost.

DE = Julia

AD = shadow of Julia

BD = 2 feet. AD = 5 feet

BA = BD + AD

= 2 + 5 = 7 feet

In ΔABC

tan 20° = $\frac{BC}{BA} = \frac{BC}{7}$

BC = 7 * tan 20°

BC = 2.5477 feet

SO the height of lamppost = 2.5477 feet

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3 years ago

a rectangular vegetable garden has a length of 6 1/8 feet squared if the length of the vegetable garden is 3 1/2 feet what is th

kodGreya [7K]

Since A = L * W, W = A / L.

Here, W = (6 1/8 ft^2) / (3 1/2 ft) = 1 3/4 ft.

The garden width is 1 3/4 ft.

3 0

3 years ago

Stephanie just redecorated her bedroom. She wants to paint but needa to know the surface area of the door to see if she has enou

zhuklara [117]

Answer:

The surface area of door is 33 680 cm².

Step-by-step explanation:

Given that the surface area of a cuboid which is the 3D of rectangle is :

$s.a = 2(l \times w) + 2(l \times h) + 2(w \times h)$

$let \: l = 80 \\ let \: w = 3 \\ let \: h = 200$

$s.a = 2(80 \times 3) + 2(80 \times 200) + 2(3 \times 200)$

$s.a = 2(240) + 2(16000) + 2(600)$

$s.a = 480 + 32000 + 1200$

$s.a = 33680 \: {cm}^{2}$

8 0

3 years ago

Each year Lizzie’s school purchases student agenda books, which are sold in the school store. This year, the school purchased 35

Stells [14]

The school can charge $7.54 for each agenda book.

Step-by-step explanation:

Given,

Purchase price of 350 books = $1137.50

Profit they want to make = $1500

Total amount = 1137.50 + 1500 = $2637.50

Therefore;

The school must sell 350 books for $2637.50

Thus,

350 books = 2637.50 dollars

1 book = $\frac{2637.50}{350}$

1 book = $7.535

Rounding off to nearest cent

1 book = $7.54

The school can charge $7.54 for each agenda book.

Keywords: addition, division

Learn more about addition at:

#LearnwithBrainly

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4 years ago

Today, everything at store is on sale. The store offers a 20% discount. Which of these expressions could be used to

MArishka [77]

Answer:

2. 0.2x

Step-by-step explanation:

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3 years ago