3 years ago

Solve the inequality 21<2x+3

Mathematics

1 answer:

VashaNatasha [74]3 years ago

4 0

Answer:

x = 9 and up

Step-by-step explanation:

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3. In the figure below, E is on AD and C is on BD. The dimensions given are in meters. What is the length, in meters, of CD?

damaskus [11]

Answer:

C. 3,960

Step-by-step explanation:

∆ADB ~ ∆EDC. Therefore,

$\frac{AB}{EC} = \frac{DB}{DC}$

$\frac{2,000}{1,200} = \frac{2,640 + x}{x}$ (substitution)

Solve for x

$\frac{5}{3} = \frac{2,640 + x}{x}$

Cross multiply

$5*x = 3(2,640 + x)$

$5x = 7,920 + 3x$

5x - 3x = 7,920

2x = 7,920

x = 7,920/2

x = 3,960 meters

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2 years ago

The regular price for a sweater is $48. The store is having buy one get one 1/2 off sale. If you buy 2 sweaters for that price w

IRISSAK [1]

25%

If you are buying 2 shirts for the same price, you have to calculate the cost of the shirt at half price first (1 piece of the pie) and then add it the original price (2 equal pieces of the pie since you just divided that to the price of the second shirt). That would be considered 3 out of 4 pieces off the pie or 75%. Your savings would be 25%.

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3 years ago

Read 2 more answers

What is the exact volume of a cylinder whose radius is 21 centimeters and whose height is 30 centimeters?

olga nikolaevna [1]

Volume of cylinder
v = πr²
v = 22/7 x 21²
v = 1385.441 cm³

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3 years ago

The object above is symmetrical through Y = 17 inches Z = 18 inches, and H = 11 inches, what is the area of the object ?

oksian1 [2.3K]

Answer:

let me try