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IrinaVladis [17]
3 years ago
12

A triangle has altitude 4cm less than it's base. If the area of the triangle is 38.5cm3 find the length of it's base

Mathematics
1 answer:
Svetlanka [38]3 years ago
4 0

Answer:

Since it wouldn't make sense to have a negative height, we will pick the correct answer to be 22 cm. To check our work, we will replace "x" with 22.

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In a 45° - 45° - 90° right triangle, the length of the hypotenuse is 15 . What is the length on one of the legs?
STALIN [3.7K]
Since 45 = 45
then the two other sides are equal
(15)^2 = (side)^2 + (side)^2
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112.5 = (side)^2 square root
side = 10.6
this is my answer
8 0
4 years ago
Sketch a graph that shows the relationship between
STALIN [3.7K]

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5 0
3 years ago
Please help I really need help on this
diamong [38]

Answer:

Step-by-step explanation:

The probability of an event to occur is given by a fraction:

P = \frac{number of favourable cases}{total number of possible cases}

Your favourable cases are given by the number of red face cards, that is the Jacks, the Queens and the Kings of Diamonds and Hearts, this number is 6.

The total number of cases is given by the total number of the cards, that is 52.

So the probability of drawing a red face card is:

P = \frac{6}{52}

That is ≃ 0,115... = 11,5%

8 0
4 years ago
A research center is interested in investigating the height and age of children who are between 5 to 9 years old. In order to do
ehidna [41]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

Age(x)

7

8

5

8

8

7

7

7

9

8

5

8

6

5

8

Height (Y)

47.3

48.8

41.3

50.4

51

47.1

46.9

48

51.2

51.2

40.3

48.9

45.2

41.9

49.6

The estimated regression equation:

ŷ = 2.73953X + 27.91395

Where ;

X = independent variable

ŷ = predicted or dependent variable

27.91395 = intercept

C.) To obtain the variation in sample values of height estimated by the model, we obtain the Coefficient of correlation:

Using the online pearson correlation Coefficient calculator :

The correlation Coefficient is 0.9696.

which means that the regression model estimated in part (b) explains approximately (0.9696 * 100) = 96.96% = 97% of the variation in the height in the sample.

3 0
4 years ago
Help please!! Stuck on this question!! ∠ABC is adjacent to ∠CBD. If the m∠ABC=4x+23, m∠CBD=6x+7, and m∠ABD=130°, what is the mea
Ulleksa [173]

Answer:

63 degrees

Step-by-step explanation:

add 4x + 23 and 6x + 7, then equal that to 130. When you find x, plug it into 4x+23 and get 63.

3 0
4 years ago
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