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3 years ago

12.33 to the nearest tenth

Mathematics

2 answers:

ivann1987 [24]3 years ago

7 0

12.3 is the answer i think

kolbaska11 [484]3 years ago

3 0

The correct answer would be

12.3

You would round the hundredth. If the hundredth place is greater than 5, you would round up. If the hundredth place is less than 5, you would round down.

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This figure is made up of a quadrilateral and a semicircle.

Arturiano [62]

Answer:

The correct option is B. The area of the figure is 40.4 units².

Step-by-step explanation:

The line AB divides the figure in two parts one is a rectangle and another is semicircle.

The distance formula is

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The length of AB is

$AB=\sqrt{(2+3)^2+(4-2)^2}=\sqrt{25+4}=\sqrt{29}$

The length of AD is

$AD=\sqrt{(-1+3)^2+(-3-2)^2}=\sqrt{4+25}=\sqrt{29}$

Since AB=AD, therefore ABCD is a square. The area of the of square is

$A_1=a\times a=\sqrt{29}\times \sqrt{29} =29$

The area of square is 29 units².

The area of a semicircle is

$A_2=\frac{\pi}{2}r^2$

Since AB is the diameter of the semicircle, therefore the radius of the semicircle is

$r=\frac{d}{2}=\frac{\sqrt{29}}{2}$

The area of the semicircle is

$A_2=\frac{3.14}{2}(\frac{\sqrt{29}}{2})^2=40.3825$

The area of the figure is

$A=A_1+A_2=29+11.2825=40.3825\approx 40.4$

Therefore the area of the figure is 40.4 units². Option B is correct.

5 0

3 years ago

Bag A contains 3 red balls and 3 blue balls.

dezoksy [38]

Answer:

30% probability that the ball taken from B is red.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question:

Red ball from urn A:

3/6 = 1/2 probability of getting a red ball from urn A.

Then urn B will have 5 balls, 2 of which are red, so 2/5 probability of getting a red ball.

Blue ball from urn A:

3/6 = 1/2 probability of getting a blue ball from urn A.

Then urn B will have 5 balls, 1 of which is red, so 1/5 probability of getting a red ball.

Total:

$p = \frac{1}{2}*\frac{2}{5} + \frac{1}{2}*\frac{1}{5} = \frac{2}{10} + \frac{1}{10} = \frac{3}{10}$

3/10 = 0.3 = 30%.

30% probability that the ball taken from B is red.

4 0

3 years ago

Mrs. Dugan plans to serve 100 barbecue sandwiches at the company picnic. How many packages of barbecue buns will she need if bun

Aleonysh [2.5K]

100 sandwiches, using bun packages of 8...

100/8=12.5 Since you cant buy a half a package, round up to 13 packages

100 sandwiches, using bun packages of 12...

100/12=8.33 Since you cant have a third of a package, round up to 9 packages

6 0

3 years ago

20 is what percent of 52? plz help!

Brilliant_brown [7]

Basically, you'd do:

0.2 * 52 (0.2 = 20%, 21% = 0.21)

Your Answer:
10.4

8 0

3 years ago

Read 2 more answers

I really need help with this question answer nowwwwww please someone

natta225 [31]

Born: 7.45 pounds
gains: 6.4 oz a week
time: 1.5 months

6.4 + 6.4 + 6.4 + 6.4 + 6.4 + 6.4 = 38. 4 oz

38.4 oz = 2.4 punds

7.45 + 2.4 = 9.85

7 0

3 years ago