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lara [203]
3 years ago
5

How to find the area?????????????

Mathematics
2 answers:
Illusion [34]3 years ago
8 0
Area of a triangle = 1/2 b•h

A = 1/2 b • h
A = 1/2 (10 cm • 9 cm)
A = 1/2 (90 cm^2)
A = 45 cm^2.
Law Incorporation [45]3 years ago
3 0
U multiply the y and the x axis by each other and that is how u find the area i think<span />
You might be interested in
A jewelry company prints a hidden watermark on the logo of all its official documents. The watermark is a chord located 0.7cm. F
kicyunya [14]

____________________________________________________

Answer:

Your answer would be 4.8 cm

____________________________________________________

Step-by-step explanation:

To solve this, you would want to use the Pythagorean Theorem. I will attach a picture below to show you the exact side you are trying to find in this problem.

Pythagorean Theorem:

a² + b² = c²

To solve this, we would have to plug the numbers (0.7, 2.5) in to the right spot in the Pythagorean theorem. We are trying to find one of the side lengths. 0.7 is one of the side lengths, while 2.5 would be our hypotenuse

Your equation should look like this:

0.7² + b² = 2.5²

Now we solve.

0.7² + b² = 2.5²

↓                 ↓

0.49 + b² = 6.25

-0.49           -0.49

             ↓

        b² = 5.76

Now, we have to use the square root in order to remove the exponent.

√b² = √5.76

      ↓

  b  =  2.4

Now, we would have to multiply 2.4 by 2

2.4 × 2 = 4.8

4.8 cm is your FINAL answer

____________________________________________________

4 0
4 years ago
Read 2 more answers
Use elimination to solve the system of equations 9x-2y=30 and x-2y=14
VashaNatasha [74]

Answer:

Step-by-step explanation:

9x - 2y = 30

x - 2y = 14

9x - 2y = 30

-x  + 2y = -14

8x = 16

x = 2

2 - 2y = 14

-2y = 12

y = -6

(2, -6)

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%2860%29%20%2B%20%280.07%29%20%20%5Ctimes%20%280.15%29" id="TexFormula1" title="(60) + (0.07)
Leona [35]

Answer:

First, you multiply 0.07 by 0.15

60 + (0.07) * (0.15)

60 + 0.0105

= 60.0105

I hope this helps!

-Mikayla


8 0
3 years ago
A researcher plants 22 seedlings. After one month, independent of the other seedlings, each seedling has a probability of 0.08 o
Andrews [41]

Answer:

E(X₁)= 1.76

E(X₂)= 4.18

E(X₃)= 9.24

E(X₄)= 6.82

a. P(X₁=3, X₂=4, X₃=6;0.08,0.19,0.42)= 0.00022

b. P(X₁=5, X₂=5, X₄=7;0.08,0.19,0.31)= 0.000001

c. P(X₁≤2) = 0.7442

Step-by-step explanation:

Hello!

So that you can easily resolve this problem first determine your experiment and it's variables. In this case, you have 22 seedlings (n) planted and observe what happens with the after one month, each seedling independent of the others and has each leads to success for exactly one of four categories with a fixed success probability per category. This is a multinomial experiment so I'll separate them in 4 different variables with the corresponding probability of success for each one of them:

X₁: "The seedling is dead" p₁: 0.08

X₂: "The seedling exhibits slow growth" p₂: 0.19

X₃: "The seedling exhibits medium growth" p₃: 0.42

X₄: "The seedling exhibits strong growth" p₄:0.31

To calculate the expected number for each category (k) you need to use the formula:

E(XE(X_{k}) = n_{k} * p_{k}

So

E(X₁)= n*p₁ = 22*0.08 = 1.76

E(X₂)= n*p₂ = 22*0.19 = 4.18

E(X₃)= n*p₃ = 22*0.42 = 9.24

E(X₄)= n*p₄ = 22*0.31 = 6.82

Next, to calculate each probability you just use the corresponding probability of success of each category:

Formula: P(X₁, X₂,..., Xk) = \frac{n!}{X_{1}!X_{2}!...X_{k}!} * p_{1}^{X_{1}} * p_{2}^{X_{2}} *.....*p_{k}^{X_{k}}

a.

P(X₁=3, X₂=4, X₃=6;0.08,0.19,0.42)= \frac{22!}{3!4!6!} * 0.08^{3} * 0.19^{4} * 0.42^{6}\\ = 0.00022

b.

P(X₁=5, X₂=5, X₄=7;0.08,0.19,0.31)= \frac{22!}{5!5!7!} * 0.08^{5} * 0.19^{5} * 0.31^{7}\\ = 0.000001

c.

P(X₁≤2) = \frac{22!}{0!} * 0.08^{0} * (0.92)^{22} + \frac{22!}{1!} * 0.08^{1} * (0.92)^{21} + \frac{22!}{2!} * 0.08^{2} * (0.92)^{20} = 0.7442

I hope you have a SUPER day!

8 0
3 years ago
What are the coordinates of the point that is 3/5 of the way from A(-9, 3) to B(21,-2)?
ANTONII [103]

Answer:

Building and solving an equation, it is found that the coordinates are: (9,0).

We are given two points: A(-9,3) and B(21, -2).

We also want point C(x,y).

C is 3/5 of the way from A to B, thus:

This is used to find both the x-coordinate and the y-coordinate of C.

First, the x-coordinate, considering .

Then we get 9,0

Step-by-step explanation:

6 0
2 years ago
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