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VladimirAG [237]
3 years ago
14

Solve these simultaneous equations Using the algerbraic method

Mathematics
1 answer:
kherson [118]3 years ago
4 0
The second equation equals: 3X +18y=60 (Both sides times 3)
And then use this new equation minus the first equation, you will get:
Left side: (3X +18y) - (<span>3x+6y)
Right side: 60-30
So 12y=30
Then y=2.5
Take y value into one of the three equations, you will get x=5

or

in another easier way:

Directly minus the second equation from the first one:
</span>(3x+6y) -(<span>X+6y)=10
</span>2X = 10
X = 5
Get Y is easy, Y=2.5
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Select all equations that have at least one integer solution.
Anit [1.1K]

Answer:

b and d

Step-by-step explanation:

5 0
3 years ago
What is the GCF of the numerator and denominator in the following fraction? -99/176
Lady bird [3.3K]
-99 = -9*11
176 = 16*11

Both factorizations have 11 show up. It turns out that 11 is the largest common factor. 

Answer: C) 11

Note: if you divide both numerator and denominator by 11, then the fraction reduces to -9/16
8 0
3 years ago
Read 2 more answers
A CLOSER LOOK AT Compound Inequalities We previously learned that compound inequalities are two inequalities joined by the word
alex41 [277]

Answer:

The sign at the ticket booth should read "Guests that are under 3 years old or over 62 years old get free admission!"

Step-by-step explanation:

Compound inequalities are the combination of two inequalities by the words "or" or "and".

In the given example, the compound inequality is,

Guests that are under 3 years old and over 62 years old get free admission!

The given inequality can be broken into two individual inequalities as,

Inequality 1: Guests that are under 3 years old get free admission

Inequality 2: Guests that are over 62 years old get free admission

The above two inequalities are combined by "and" in the given compound inequality.

Now, "and" signifies that both the conditions or inequalities should be fulfilled at the same time. But a guest can either be under 3 years old or he/she should be older than 62. Both the conditions cannot be fulfilled at the same time and hence, the sign doesn't make any sense.

To correct the sign, "and" should be replaced with "or".

Therefore, the corrected sign at the ticked booth should read "Guests that are under 3 years old or over 62 years old get free admission!".

For more details, refer to the link:

brainly.com/question/20296065?referrer=searchResults

3 0
2 years ago
it cost $35 for one adult and two children to attend a show. It cost $60 for two adults and three children to attend the same sh
N76 [4]
Assume that,
adult = x
child = y

x+2y = 35 (1st equation)
2x+3y = 60 (2nd equation)
x = 35-2y (3rd equation)

Substitute 3 into 2 :

2(35-2y) + 3y =60
70-4y +3y = 60
y = 10

x+2y = 35
x+2(10) =35
x +20 =35
x = 15

One adult = $15


7 0
3 years ago
Which Ratio is equivalent to 1:1<br>A) 4:4<br>B) 1:0<br>C) 0:1​
lina2011 [118]

Answer:

4:4

Step-by-step explanation:

I dont know why I need to explain it thr other answers dknt even make sense

5 0
3 years ago
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