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UNO [17]
3 years ago
10

PLEASE HELP I NEED THIS

Mathematics
2 answers:
Reptile [31]3 years ago
8 0

Answer:

Step-by-step explanation:

The Pythagorean Theorem is c^2=a^2+b^2. This can be applied to right triangles

h^2=x^2+y^2

Meaning the hypotenuse is equal to the square root of the sum of its squared sides.

In this case:

14^2=3^2+x^2

x^2=14^2-3^2

x^2=196-9

x^2=187

x=(187)^(1/2)

x=13.7 rounded to nearest tenth

Vesna [10]3 years ago
5 0

Answer:

I think it would be 11cm

Step-by-step explanation:

I think you would subtract the 3 by the 14

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Laura draws a right triangle she then creates three squares using each side of the triangle shown
Mamont248 [21]
The correct way of proving Pythagoras Theorem here is:
<span>4- to prove that the area of two smaller squares combined is equal to the large square

This is because Pythagoras theorem states that the sum of the square of the two smaller sides is equivalent to the square of the third side. The squares of the sides are represented as the area of the squares because the area of a square is obtained by multiplying a length by itself, or squaring it.
</span>
7 0
3 years ago
30 35 23 22 28 39 21 Population 2 45 49 15 34 20 49 36 Use this data to find the 90% confidence interval for the true difference
IgorC [24]

Answer:

(−14.850850 ; 0.565135)

Step-by-step explanation:

Confidence interval :

Xd ± Tcritical * Sd/√n

Population 1 :30 35 23 22 28 39 21

Population 2 : 45 49 15 34 20 49 36

d = -15,-14,8,-12,8,-10,-15

The mean of d, Xd = Σx / n = - 7.14285714

The standard deviation of the difference, Sd = 10.4948967 (using calculator)

Sample size, n = 7

Tcritical at 90%, df = 7 - 1 = 6

Tcritical = 1.943176

Confidence interval :

- 7.14285714 ± 1.943176 * 10.4948967/√7

Confidence interval :

- 7.14285714 ± 7.7079925

(−14.850850 ; 0.565135)

8 0
3 years ago
4. Mrs. Kreger created the expression
Charra [1.4K]

Here, we are required to find how many hours per week does Lindsey need to study if she wants to have an average of at least 90

Lindsey needs to study for at least 15.25 hours to have an average of 90

Given expression:

4(h + 11) – 15

Where,

h = number of hours

For Lindsay to have at least 90

4(h + 11) – 15 = 90

open parenthesis

4h + 44 - 15 = 90

4h + 29 = 90

4h = 90 - 29

4h = 61

Divide both sides by 4

h = 61/4

h = 15.25 hours

Therefore,

Lindsey needs to study for at least 15.25 hours to have an average of 90

Read more:

brainly.com/question/13158712

7 0
3 years ago
What could be the value for x? 3/14 &lt; x &lt; 3/13
Ksju [112]

Answer:

14^3/100 i think im not 100% sure so if its wrong dont get mad

Step-by-step explanation:

8 0
3 years ago
I need help finding the perimeter
Romashka [77]
Measure the sides. And when you get all of the sides add them I'll and get the perimeter I think.
3 0
3 years ago
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