Answer:
−7x^2+28
Step-by-step explanation:
28−7x^2
=28+−7x^2
=−7x^2+28
Answer: 15 + 53/77
Step-by-step explanation:
Multiplying a fraction by 1 does not change the value.
Any number divided by itself is 1.
For instance, 11/11 = 7/7 = 1.
12 + 1/7 + 3 + 6/11 = 15 + 1/7 + 6/11
= 15 + (11×1)/(11×7) + (7×6)/(7×11)
= 15 + 11/77 + (6×7)/77
= 15 + (11 + 6×7)/77
= 15 + 53/77
It is faster to make sure to multiply by the "smallest" form of one that will work, but you don't have to. You only need to make sure that at the end there are no common factors in numerator and denominator, and that numerator is smaller than denominator.
Answer:
<h3>0.2</h3>
Step-by-step explanation:
Given a linear function f(x) that varies at a constant rate of change 1.5 with respect to x, If x varies from x = 1.3 to x = 1.5, the to get the amount by which x change by, we will use the expression;
Δx = x₂-x₁
x₂ is the final value of x
x₁ is the initial value of x
Given x₁ = 1.3 and x₂ = 1.5
Substitute the values in the formula above;
Δx = x₂-x₁
Δx = 1.5 - 1.3
Δx = 0.2
Hence the value of x change by 0.2
____________________________________________________
Solve for y:
5y-3(2-y)=10
Distribute the -3 to the variables inside the parenthesis.
5y - 6 + 3y = 10
8y - 6 = 10
Add 6 to both sides
8y = 16
Divide both sides by 8
y = 2
____________________________________________________
Answer:
x= -4
graph with a closed circle over the intended number
Step-by-step explanation:
These inequalities are basically the same steps as equation.
Step 1: subtract 7 from the 19 on the other side of the equation, this equals 12
Step 2: divide -3 by 12 this equals -4
For these equations, you have to inverse the operations (i.e + to -). that is why you subtract and divide. (-3x) is the same as multiplication. The coefficient and variable are being multiplied.
