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Alex777 [14]
3 years ago
14

Find fourth proportional of 6, 9, 18. Please say me correct answer

Mathematics
1 answer:
olganol [36]3 years ago
4 0
A: 3

Good luck on everything
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Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel. How old is Daniel now
matrenka [14]
<span>K = 3D. K - 4 = 5(D - 4). K - 4 = 5D - 20. K = 5D - 16. 3D = 5D - 16. 16 = 2D. D = 8. K = 3 x 8. K = 24.</span>
7 0
3 years ago
Find the number of faces on this solid.
snow_lady [41]

Answer:

5 faces

Step-by-step explanation:

4 triangle faces + 1 square base face = 5 faces in total

7 0
3 years ago
Read 2 more answers
A rug is shaped like a parallelogram with a base of 41⁄2 ft. and a height of 2 1⁄4 ft. What is the area of the rug? Draw and lab
Bess [88]

Answer:

46.125 square feet or 46\dfrac{1}{8} sq. feet.

Step-by-step explanation:

The rug is shaped like a parallelogram with a base of \frac{41}{2} = 20.5 feet. and a height of 2\dfrac{1}{4} = 2.25 feet.

Now, the area of a parallelogram is given by the product of one side as the base and the perpendicular distance of that side from the opposite parallel side as height.

Now, the area of the given parallelogram is (20.5 × 2.25) = 46.125 square feet. (Answer)

7 0
3 years ago
Aliyah spent half of her weekly allowance playing arcade games. To earn more money her parents let her mow the lawn for $7. What
Fudgin [204]

Answer:

who mows the lawn for 7 dollars :/

Step-by-step explanation:

4 0
3 years ago
You want to invest in companies belonging to Gispa Group of
marysya [2.9K]

Answer:

0.1007

Step-by-step explanation:

Given :

Average gain, μ = 0.8

Standard deviation, σ = 0.7

Number of companies, n = 20

Obtaining the standardized value ;

Zscore = (x - mean) / (σ/√n)

Zscore = (1 - 0.8) / (0.7/√20)

Zscore = (0.2 / 0.1565247)

Z = 1.27775

Using the Z probability calculator :

P(Z > 1.27775) = 0.10067

P(Z > 1.27775) = 0.1007 ( Z probability calculator)

8 0
3 years ago
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