if they're in a bundle of 10 then theres 10 pencils
7.52 - 2.9 × 1 + 0.8
Answer:
5.42
Step-by-step explanation:
PEMDAS
Answer:
5.42
It is this because 7.52-2.9 is equal to 4.62 plus 0.8 equals 5.42.
Answer:
x = 3
y = -2
Step-by-step explanation:
x + 2y = -1
2x – 3y =12
Using substitution means that in one equation you solve for a variable. In this case, the first equation would be easier to solve for x since there are no coefficients.
x = -2y - 1
Now, we plug in the value of x into the second equation, and solve for y.
2 (-2y - 1) - 3y = 12
-4y - 2 - 3y = 12
-7y - 2 = 12
-7y = 14
y = -2
Since we have a numerical value of y, we can use it to solve for x by plugging it into one of the original equations.
x + 2(-2) = -1
x - 4 = - 1
x = 3
If you'd like to check the answer, plug in both values you got to the original equations!
I hope this helps!
Answer: 2x^3+5
Step-by-step explanation:
Answer:
11 - 6x - 12 = -13 -2x
- 6x - 1 = -13 - 2x
-4x - 1 = -13
Answer:
There are 14 horses and 21 chickens.
Step-by-step explanation:
First, you have to make expression for horse and chicken. So we can let x be the number of horses and y will be the number of chickens. Next, given that the total number of feet for both animals is 98 so you have to make simultaneous equation :
(horse has 4 feet and chicken has 2 feet)
There are a total of 35 heads so the other equation will be :
Lastly, you have to solve it :