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hjlf
3 years ago
8

What are the 7 wonders of the world

Mathematics
1 answer:
umka21 [38]3 years ago
4 0
<span>1. Great Pyramid of Giza.
2. Hanging Gardens of Babylon.
3. Statue of Zeus at Olympia.
4. Temple of Artemis.
5. Mausoleum at Halicarnassus.
6. Colossus of Rhodes.
<span>7.Lighthouse of Alexandria.

hope that i helped!</span></span>
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I forgot how to do these, could somebody explain.<br> 30 points for both
Aleonysh [2.5K]

Answer:

11) A

12) B

Step-by-step explanation:

11) 10x² + 1 = 0

Subtract 1 from both sides:

10x² = -1

Divide both sides by 10:

x² = -1/10

Take the square root of both sides:

x = ±√(-1) / √(10)

Remember that the square root of -1 is i:

x = ±i / √(10)

To rationalize the denominator, multiply top and bottom by √10.

x = ±i√(10) / 10

Answer is A.

12) 2v² + 8v + 6 = 0

Divide both sides by 2:

v² + 4v + 3 = 0

Use AC method or quadratic formula to factor:

(v + 1) (v + 3) = 0

Set each expression to 0:

v + 1 = 0 or v + 3 = 0

Solve:

v = -1 or v = -3

Answer is B.

7 0
3 years ago
Please answer question 10
sveta [45]

Answer:

Step-by-step explanation:

1) First, we figure out the number of blue and green marbles (27 each)

2) Subtract the 6 blue and 3 green marbles. We now have 21 blue marbles and 24 green marbles.

3) Since we want to have more blue marbles while taking out the <em>minimum</em> number of green, we're going to take out green marbles out until there's one less than blue. Because there's 21 blue, we want 20 green. We've taken out 4/13 marbles so far.

4) Now, we're going to take 1 marble out of both the greens and blues until we have 17 blue and 16 green. We've now taken out 12/13 marbles. We can't make the 13th marble a blue one, otherwise we even them out, so we'll take another green. Now we have 17 blue and 15 green.

5) Count the number of greens you've taken out, and voila!

6 0
3 years ago
A boy gets #2.00 per week as pocket money. His sister gets only #1.60 per week
Norma-Jean [14]

The Ratio of the boy's allowance to his sister's is 5 : 4.

The new Ratio is 1 : 10000.

<h3>What is definition of ratio?</h3>
  • The quotient of two mathematical expressions, 1a. b: the proportion between two or more items in terms of quantity, amount, or size.
  • What does the arithmetic term "ratio" mean?
  • An ordered pair of numbers a and b, represented as a / b, is a ratio if b is not equal to 0. A proportion is an equation that sets two ratios at the same value.
  • For instance, if there is 1 boy and 3 girls, you may express the ratio as 1: 3 (there are 3 girls for every boy), meaning that there are 1 in 4 boys and 3 in 4 girls.

To learn more about :Ratio

Ref : brainly.com/question/2328454

#SPJ13

;

6 0
1 year ago
how many pounds of candy worth $12 per pound should be mixed with candy costing $19 per pound to produce a 70 pound mixture that
sweet-ann [11.9K]

Answer:

40 pounds

Step-by-step explanation:

Given: Cost of a candy (c_1)= \$ 12 per pound

           Cost of candy (c_2) = \$ 19\ per\ pound

           Total amount of mixture of be produced = 70\ pound

           Selling price of mixture = \$ 15 \ per\ pound

Let´s x be the amount of c_1 to be mixed in the mixture.

∴ Cost of c_1 in the mixture = 12x

Next, Cost of c_2 in the mixture = (70 - x)\times 19

And we know the cost of final mixture = 70 \times 15 = 1050

Now, putting all the value in the equation

⇒ 12x + 19 \times (70 - x) = 1050

⇒ 1330 - 7x = 1050

⇒ -7x = -280

∴ x = 40\ pound

∴ 40 pounds of candy worth $12 per pound to be mixed in the mixture.

6 0
3 years ago
Which is the most accurate estimate of 27% of 39 ?
pickupchik [31]

Answer:

so 39× . 27 =10.53

that would be an accurate estimate

4 0
2 years ago
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