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zimovet [89]
3 years ago
15

2x - 1 1/2 = 31 solve the equation for the variable

Mathematics
2 answers:
defon3 years ago
8 0

Answer:

x=16 1/4

Step-by-step explanation:

is that a 11/2 or a 1 1/2? the answer i put was for 1 1/2

Maurinko [17]3 years ago
4 0

Answer:

x=16 1/4

Step-by-step explanation:

2 - 1/2 = 1/2

31 / 1/2 = 15 1/2

Check Answer:

(2 x 16 1/4)- 1 1/2

32 1/2 - 1 1/2

=31

Sooo:

x=16 1/4

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The sum of two numbers is 30 and their difference is 12. Find the two numbers.
MariettaO [177]

Answer:

let the two numbers are x & y

x+y=30...eq(1) &x-y=12....eq(2)

x=30-y then put in the eq(2)

30-y-y=12

30-2y=12

-2y=12-30

-2y= -18

y=9 then we put this answer in to eq(1)

so,x+y=30

x+9=30

x=30-9

x=21

so, the two numbers are (21,9)

5 0
4 years ago
What is the simplified form of the expression? (2x^6) (3x ^ 1/2) A. 6x ^ 13/ 2 B. 5x ^ 13/2 c. 5x3 d. 6x3
Blizzard [7]
The given expression is (2x⁶)(3x^1/2)
Now, multiply 2 with 3, the expression becomes 6.x⁶.x^1/2
Now, as the base is same, add the exponents:
The expression becomes 6x^13/2

The option A is correct 

 
7 0
4 years ago
Solve for the indicated variable. Include all of your work in your answer. Submit your solution. A = 1 + prt; for r
dlinn [17]
A=1+prt
A-1=prt
A-1/pt=r
8 0
3 years ago
I need help with all
LuckyWell [14K]
The first one is letter A, thats the only one I know !
7 0
4 years ago
In this figure, m∠1 = ( 3x + 10) and m∠5 =(4x+2) <br><br> What value of x makes a ll b ?
Leni [432]

Answer:

x=8

Step-by-step explanation:

Angles 1 and 5 are corresponding angles.

If angles 1 and 5 are congruent, then the lines are parallel.

This means the measurement of angle 1 needs to equal the measurement of angle 5.

This is the equation we must solve:

3x+10=4x+2

Subtract 3x on both sides:

10=1x+2

Subtract 2 on both sides:

8=1x

Use multiplicative identity property:

8=x

So if x=8, then the angles 1 and 5 which are corresponding are congruent.

If corresponding angles are congruent, then the lines are parallel.

8 0
4 years ago
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