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2 years ago

HelpI'll give brainliest

Mathematics

2 answers:

faltersainse [42]2 years ago

6 0

Answer:

in the first question you use the cosine rule to solve the problem since you have one angle and two sides of the triangle and the rules states thus x square is equal to 5 squid + 8 squared -2 * 5 * 8 x cos 60

sineoko [7]2 years ago

3 0

Answer: I believe the answer is 5

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4(9) - 2(7-3)^2<br><br><br>thanks if u help

MariettaO [177]

Answer:

Step-by-step explanation:

$36 -2(4)^{2}$

$36 - 2 \times 16$

$36 - 32$

$4$

7 0

3 years ago

Who is Albert Einstein?

madreJ [45]

Answer:

Albert Einstein was a German mathematician and physicist who developed the special and general theories of relativity.

3 0

2 years ago

What is the number of ways to arrange 5 objects from a set of 9 different objects

luda_lava [24]

$\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad 
\begin{cases}
n=9\\
r=5
\end{cases}\implies _9P_5=\cfrac{9!}{(9-5)!}$

7 0

3 years ago

A group of people were given a personality test to determine if they were Type A or Type B. The results are shown in the table b

amm1812

Answer:

Option A: P(Male or Type B) > P(Male | Type B)

Step-by-step explanation:

Total Female = 85 type A, 12 type B ⇒ 97 Female.

Total Male = 65 type A, 38 type B ⇒ 103 Male

Total type A = 65 + 85 = 150

Total type B = 12 + 38 = 50

total number of people = 97 + 103 = 200

Then the probability would be:

P(Male | Type B) = $\frac{number of male in B}{total number of male}$

= $\frac{38}{103}$

= 0.368

P(Male or Type B) = $\frac{total number of male + (total number of people in B - total number of male in B)}{total number of male}$

= $\frac{103 + (50 - 38)}{200}$

= $\frac{103 + 12}{200}$

= $\frac{115}{200}$

= 0.575

Hence, P(Male or Type B) > P(Male | Type B)

5 0

3 years ago

2x + 3y = -1; 3x + 5y = -2

Andreas93 [3]

Answer:

x=1, y=-1. (1, -1).

Step-by-step explanation:

2x+3y=-1

3x+5y=-2

-----------------

3(2x+3y)=3(-1)

-2(3x+5y)=-2(-2)

-------------------------

6x+9y=-3

-6x-10y=4

--------------

-y=1

y=-1

2x+3(-1)=-1

2x-3=-1

2x=-1+3

2x=2

x=2/2

x=1

8 0

3 years ago

HelpI'll give brainliest​

HelpI'll give brainliest