All categories

3 years ago

Solve the following triangles, Round to the nearest tenth

Mathematics

2 answers:

vampirchik [111]3 years ago

6 0

Answer:

I think B=25

Step-by-step explanation:

take 180-130-25=25

dalvyx [7]3 years ago

5 0

Answer:

B = 180 - 130 - 25 = 25

a = 6

c = 10.9

Step-by-step explanation:

the sum of all angles in a triangle is always 180 degrees.

so, we know 2 angles. we need to subtract them from 180 to get the third angle.

as it turns out, the angles at A and B are equal, and that means that also the corresponding side lengths must be equal : a = b = 6.

and for c we use the general Pythagoras

c² = a² + b² - 2ab×cos(C)

c² = 36 + 36 - 72×cos(130) = 118.28...

c = sqrt(118.28...) = 10.87569344... ≈ 10.9

just in case

36 + 36 - 72×cos(130) = 72 - 72×-0.64... =

= 72 + 72×0.64... = 118.28...

You might be interested in

The rectangular box has a lenth of 10 inches, a width of 8 inches, and a height of 20 inches.

Ket [755]

The area is 1600 inches

3 0

3 years ago

Read 2 more answers

19 students reported seeing the latest blockbuster film over the summer. 76 total students were surveyed. Which fraction represe

tatiyna

7 0

4 years ago

Ali box 3 1\4 yards of blue ribbon for a craft project she bought 2 2\3 yards of green ribbon how much ribbon does she have in t

inn [45]

3 1/4 + 2 1/3 = 67/
12
= 5 7/12

Mark brainliest please

Hope this helps you

7 0

3 years ago

(Writing Two-Step Equations HC) Given the equation 4x + 12 = 64: Part A: Write a short word problem about a purchase made to ill

poizon [28]

Considering the expression 4x + 12 = 64, it is found that:

A. The problem is that you purchased x fried pastry, costing $4, plus a chocolate and a soda, costing $12, and the total purchase cost was of $64.

B. The solution is x = 13.

C. The solution means that you purchased 13 fried pastry.

<h3>Expression</h3>

The expression is presented as follows:

4x + 12 = 64.

A possible context for this problem is:

x fried pastry are purchased, each costing $4, hence 4x.

A chocolate and a soda purchased, costing a total of 12, hence 4x + 12.

The total cost of the purchase was of $64, hence 4x + 12 = 64.

The number of fried pastry purchased is the solution to the equation, calculated as follows:

4x + 12 = 64

4x = 52

x = 52/4

x = 13 -> 13 fried pastry were purchased.

More can be learned about expressions at brainly.com/question/24342899

#SPJ1

5 0

2 years ago

Let represent the number of tires with low air pressure on a randomly chosen car. The probability distribution of is as follows.

Sindrei [870]

Answer:

a) $P(X=3) = 0.1$

b) $P(X\geq 3) =1-P(X$

And replacing we got:

$P(X \geq 3) = 1- [0.2+0.3+0.1]= 0.4$

c) $P(X=4) = 0.3$

d) $P(X=0) = 0.2$

e) $E(X) =0*0.2 +1*0.3+2*0.1 +3*0.1 +4*0.3= 2$

f) $E(X^2)= \sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) =0^2*0.2 +1^2*0.3+2^2*0.1 +3^2*0.1 +4^2*0.3= 6.4$

And the variance would be:

$Var(X0 =E(X^2)- [E(X)]^2 = 6.4 -(2^2)= 2.4$

And the deviation:

$\sigma =\sqrt{2.4} = 1.549$

Step-by-step explanation:

We have the following distribution

x 0 1 2 3 4

P(x) 0.2 0.3 0.1 0.1 0.3

Part a

For this case:

$P(X=3) = 0.1$

Part b

We want this probability:

$P(X\geq 3) =1-P(X$

And replacing we got:

$P(X \geq 3) = 1- [0.2+0.3+0.1]= 0.4$

Part c

For this case we want this probability:

$P(X=4) = 0.3$

Part d

$P(X=0) = 0.2$

Part e

We can find the mean with this formula:

$E(X)= \sum_{i=1}^n X_i P(X_i)$

And replacing we got:

$E(X) =0*0.2 +1*0.3+2*0.1 +3*0.1 +4*0.3= 2$

Part f

We can find the second moment with this formula

$E(X^2)= \sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) =0^2*0.2 +1^2*0.3+2^2*0.1 +3^2*0.1 +4^2*0.3= 6.4$

And the variance would be:

$Var(X0 =E(X^2)- [E(X)]^2 = 6.4 -(2^2)= 2.4$

And the deviation:

$\sigma =\sqrt{2.4} = 1.549$

4 0

4 years ago