Answer: x = 0 , y = -4
Step-by-step explanation:
4x - 3y = 12 } Equation 1
y = 7x - 4 } Equation 2
<em>We can substitute the value of y from equation 2 in equation 1: </em>
4x - 3(7x - 4) = 12
4x - 21x + 12 = 12
-17x = 12-12
-17x = 0
x = 0
<em>Now we can substitute this value of x in equation 2 :</em>
y = 7x - 4 } Equation 2
y = 7·0 - 4 = -4
Answer: x = 0 , y = -4
<h2><em>Spymore</em></h2>
we have it has...
5n-2/8=n+8/3
you have to cross multiply..giving us
3(5n-2)=8(n+8)
15n-6=8n+64
collect like terms
15n-8n=64+6
7n=70
n=10
I really hope that helps..bye
Answer:
25
Step-by-step explanation:
Use PEMDAS
do the powers first then the multiplication then the addition then the subtractions
Simplify the following:
8 p^3 - 3 p^3 - 2 p^2 + 5 p - 12 p - 4 + 5
Grouping like terms, 8 p^3 - 3 p^3 - 2 p^2 + 5 p - 12 p - 4 + 5 = (-3 p^3 + 8 p^3) - 2 p^2 + (5 p - 12 p) + (-4 + 5):
(-3 p^3 + 8 p^3) - 2 p^2 + (5 p - 12 p) + (-4 + 5)
8 p^3 - 3 p^3 = 5 p^3:
5 p^3 - 2 p^2 + (5 p - 12 p) + (-4 + 5)
5 p - 12 p = -7 p:
5 p^3 - 2 p^2 + -7 p + (-4 + 5)
5 - 4 = 1:
Answer: 5 p^3 - 2 p^2 - 7 p + 1
Answer:
3.5
Step-by-step explanation:
The tenths place would be 0.<u>1</u>
So in 3.<u>4</u>68 the 4 is in the tenths place
Look at the number to the right of it, if it is greater than 5 you round up and if it is 4 or lower you stay the same.
For 3.468 you would round up
So you would have 3.5