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Nadusha1986 [10]
2 years ago
10

HELP PLEEEASEEE

Mathematics
2 answers:
Solnce55 [7]2 years ago
7 0

Yes, I agree. The first step is to replace the variables, which would make it 5(9) + 2. 5 times 9 is 45, plus 2 is 47.


Ivahew [28]2 years ago
3 0
× = 9
y = 2

5× + y

⓵ Replace × and y by their value :

5(9) + 2

⓶ Solve it!

5 • 9 = 45

45 + 2 = 47

↠ Your answer is 47, you were right!

I really hope this helped, if there’s anything just let me know ☻
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Solve the system of linear equations by substitution.<br><br> 8x−13y=0<br> 12x+3=y
Oliga [24]

Answer:

x = - 39/148

y = -6/37

Step-by-step explanation:

substitute the given value of y into the equation to get 8x-13 (12x+3)=0

solve for x to get x= - 39/148

substitute the given value of x into 12x+3=y

12 x (-39/148) + 3 = y

-6/37 = y

7 0
2 years ago
Solve for v: -v+1=1 + 8v
AfilCa [17]

Answer: v=0

Step-by-step explanation:

Because....

Step 1: Simplify both sides of the equation.

−v+ 1= 8v + 1

Step 2: Subtract 8v from both sides.

−v+1 − 8v = 8v+1 − 8v

−9v + 1 = 1

Step 3: Subtract 1 from both sides.

−9v + 1 −1 = 1−1

−9v=0

Step 4: Divide both sides by -9.

\frac{-9v}{-9} = \frac{0}{-9}

v=0

Therefor, the answer is v = 0

* Hopefully this helps:) Mark me the brainliest:)!!!

3 0
3 years ago
A battalion of 520 soldiers goes through 16,380 pounds of rations in 3 weeks. If 780 more soldiers join the battalion, how many
Scorpion4ik [409]

They would need 34.125 tons of rations.


In order to find this, we first need to see how many pounds of rations a single soldier eats in a week. To do this, we take the total eaten in 3 weeks and divide by 3. Then we divide by the number of soldiers.


16,380/3 weeks= 5460 lbs per week


5460/520 soldiers = 10.5 lbs per soldier per week


Now we look to see how many soldiers we will have in total after adding. There are 520 to start and we add 780 to get 1300 total. Next we multiply that by the total per soldier per week.


10.5lbs per soldier per week * 1300 soldiers = 13,650lbs per week


Then we have to multiply by the 5 weeks that battalion will be there.


13,650lbs * 5 weeks = 68,250lbs of rations or 24.125 tons.


5 0
3 years ago
the half-life of isotope X is 2.0 years. How many years would it take for a 4.0mg sample of X to decay and have only 0.50 mg of
shepuryov [24]

After 2.0 years, the 4.0 mg sample decays to 2.0 mg.

After another 2.0 years (total 4.0 years), the 2.0 mg sample decays to 1.0 mg.

And after another 2.0 years (total 6.0 years), the 1.0 mg sample decays to 0.50 mg.

So it takes 6.0 years for 4.0 mg to decay to 0.50 mg.

4 0
3 years ago
Wat is x in 1/3x - 11 = 5
kirza4 [7]

=48

Multiply by 1

Add 1 1 11 11

to both sides of the equation

6 0
3 years ago
Read 2 more answers
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