MATHEMATICS MIDDLE SCHOOL

X=y
x+2y =3
Solve using substitution

Answers

Answer 1
Answer:

Answer:

Therefore the Final Solution is

x = 1 and y = 1

Step-by-step explanation:

Given:

x=y                ...............Equation ( 1 )

x+2y=3         ................Equation ( 2 )

To Find:

x = ?

y = ?

Solution:

Equating Equation  ( 1 ) in Equation ( 2 ) we get

y+2y=3\n\n3y=3\n\ny=(3)/(3) \n\n\therefore y =1

Now Substituting y = 1 in Equation ( 1 ) we get

x =1\n\n\therefore x=1

Therefore the Final Solution is

x = 1 and y = 1

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Convert 18/40 to a decimal
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Casey went to the fabric store and bought 2 2/3 yards of yellow fabric, yards of purple fabric, 3 1/9 and a pair of 5 1/5 inch scissors. How many yards of fabric did Casey buy altogether? A. 5 7/9 yards B. 5 5/9 yards C. 5 5/3 yards D. 5 1/3 yards
Help are these correct ?

70-q-q-2q=80 We'll this is confusing

Answers

70 - q - q - 2q = 80

-4q = 80 - 70

-4q = -10
q = -10/-4

q = -2.5 
70-q-q-2q=80
or, 70 - 2q - 2q = 80
or, 70 - 4q = 80
or, -4q = 80 - 70
or, -4q = 10
or, q = 10/-4
or, q = -2.5   (ans)

Wich is greater 20/12 or 25/15

Answers

The least common denominator is: 60
Then comparing 100/60 with 100/60

100/60 = 100/60,
therefore,
20/12 = 25/15

Disjoint subsets A and B of a universal set U, except assume that n(U)=120, n(A)=45, and n(B)=50.Then n(A′∪B)=

Answers

Answer:

 n (A'  U  B )  = 75

Step-by-step explanation:

Here, given :  n(U)=120, n(A)=45, and n(B)=50

As we know:

n (A ' U B)  =  n(A) − n (A∩B)   ... (1)

Here, n(A) = 45

So, n( A')  = n(U) - n(A)  = 120 - 45  = 75

⇒ n(A')  = 75

Now, as given A and B are disjoint sets.

⇒   n (A ∩ B)   = Ф

So, (A'  U  B )  = A'

So, n (A'  U  B )  =n( A') = 75

⇒  n (A'  U  B )  = 75

336 oz equals to ho manylbs

Answers

16 ounces is a pound and the answer is 21 pounds
The answer is 21 because 1 lb is 16 so 336 divide by 16 equals 21 so 1 multiply 21 is 21

Is 2/5 bigger than 40/ 100

Answers

40/100=4/10=2/5 hence 2/5=40/100
No 2/5 is not bigger 2/5 and 40/100 are equal

What is a commutative property of multiplication?

Answers

It means the same as it sounds like. It means that it joins others .
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