When x equals 1y equals 1.5, what is the value of 3x plus 4x-1

X = 1y = 5, then x = y = 1.5
3x + 4x-1 = 3x + (4x-1) = 7x-1 = 7 times 1.5-1 = 7 * 1.5-1

What is 3x * 4x

3x*4x=12x²

What molecules are ice made of

Ordinary ice is water molecules
Dry ice is CO2

When can we use the physical formula QE = ma

This is the change of Newton's second law. Only under the action of the electric field force, the electric field force is equal to the external force, can we use this formula

A mathematical problem of solving log
10^2-2x = 2*10^-x

I think the title should be 10 ^ (2-2x) = 2 * 10 ^ - X
10^（2-2X）=2*10^-X
That is: 10 ^ (2-2x) / 10 ^ - x = 10 ^ (2-2x) * 10 ^ x = 10 ^ (2-3x) = 2
So 2-3x = LG2
So x = (2-lg2) / 3 = 2 / 3-lg2 / 3
I hope my answers can help you solve your problems. Thank you for your support!

56 × 39 + 56 × 62-56 =? Simple calculation

56 × 39 + 56 × 62-56 =? Simple calculation
The results are as follows
==56×(39+62-1)
==56*100
==5600

The sum and product of even and even numbers is even? Why? Odd and odd, even and odd?

Even divisor 2
Even times even has divisor 2
Odd multiply odd to get odd
Even times odd = even

Calculate the square of (a-2b + 3C) - (a-2b + 3C) (a-2b-3c)

Given an acute angle and an edge, a right triangle can be determined
Right or wrong?

Wrong
It's not sure (at least the angle between the two sides and them)

Given that a = - 3x's quadratic power - 2mx + 3x + 1, B = 2x's quadratic power + MX-1, and the value of 2A + 3B has nothing to do with X, find the value of M

2A+3B=2(-3x^2-2mx+3x+1)+3(2x^2+mx-1)=-6x^2-4mx+6x+2+6x^2+3mx-3
=12x^2+(6-m)x-1
∵ without x
∴6-m=0
∴m=6
---------------If it has nothing to do with X, then the coefficients of x ^ 2 and X should be 0, but the coefficient of x ^ 2 is 12
Therefore, it should be changed to "the first term without X"

When x equals 1y equals 1.5, what is the value of 3x plus 4x-1