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aleksandr82 [10.1K]
3 years ago
7

Which equation has a solution of x = -5?

Mathematics
2 answers:
Leona [35]3 years ago
6 0

Answer:

A is correct I think

Step-by-step explanation:

lyudmila [28]3 years ago
3 0
The first equation has a solution of X=-5
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The value of x is? also can you explain how to do this?
jek_recluse [69]
We have to know the angle that is not labelled. (lets call it y) 
9x + y= 180 

and the sum of the angles of a triangle is 180 
5x + (9+x) + y=180 

2 simultaneous equations 
6 0
3 years ago
What does not contain an irrational number?
Aleksandr-060686 [28]

Answer:

i think it's the first option.

6 0
3 years ago
Read 2 more answers
Bryan and Jadyn had barbeque potato chips and soda at a football party. Bryan ate 3 oz of chips and drank 2 cups of soda for a t
Diano4ka-milaya [45]

Answer:

200 mg sodium is in 1 oz of chips and 50 mg sodium is in 1 cup of soda.

Step-by-step explanation:

Let x mg sodium is in 1 oz of chips and and y mg is in 1 cup of soda.

∵ Bryan ate 3 oz of chips and drank 2 cups of soda for a total of 700 mg of sodium.

i.e. 3x + 2y = 700 --------(1),

Jadyn ate 1 oz of chips and drank 3 cups of soda for a total of 350 mg of sodium.

i.e. x + 3y = 350 ---------(2),

Equation (1) - 3 × equation (2),

We get,

2y - 9y = 700 - 1050

-7y = -350

\implies y = \frac{-350}{-7}= 50

From equation (1),

3x + 2(50) = 700

3x + 100 = 700

3x = 700 - 100

3x = 600

\implies x = \frac{600}{3}=200

Hence, 200 mg sodium is in 1 oz of chips and 50 mg sodium is in 1 cup of soda.

7 0
3 years ago
A campus has 55% male students. Suppose 30% of the male students pick basketball as their favorite sports compared to 20% for fe
krok68 [10]
This is question of probability finding using bayes theorem  
It is used to calculate probability of two competing statements 
now p(m) = .55 
p(~m)= .45 
now for basketball for male  
p(b|m)=.30
 and for female 
p(b|~m)=.20 
so by bayes theorem  
p(m|b)=p(b|m)*p(m)/(p(b|m)*p(m)+p(b|~m)*p(~m)) 
so answer is E 
(.55)(.30) / (.55)(.30) + (.45)(.20)
7 0
3 years ago
Can someone good with math help out ?
Finger [1]
Sry i suck in math brother
6 0
3 years ago
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