Which is another way to write 42+63?

Answers

Answer 1

Answer: Forty two plus sixty three that's your answer

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IT'S TIMED NEED HELP ASAP!! Find the measure of angle C

Answers

Answer: 250 degrees

Step-by-step explanation:

Answer:

$x=(1)/(7)$

15(1/7)+5= 7.14 (rounded o the nearest hundredths)

I hope this is good enough:

Consider the following set of equations: Equation A: y = 2x + 4
Equation B: y = 3x + 1

Which of the following is a step that can be used to find the solution to the set of equations?

2x + 4 = 3x + 1

2x = 3x + 4

2x + 4 = 3x

2x + 1 = 3x + 4

Answers

The first one. y is equal to both equations so then you can set them equal to each other and solve for x if the questions requires it.

The product of two rational numbers is 1.5. Their sum is 3.5. What are the two numbers?

Answers

easy, 3 and 0.5

but ok the math way

xy=1.5
x+y=3.5

y=3.5-x
x(3.5-x)=1.5
3.5x-x^2=1.5
0=x^2-3.5x+1.5
quadratic
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}$

a=1
b=-3.5
c=1.5

x= $\frac{-(-3.5)+/- \sqrt{(3.5)^(2)-4(1)(1.5)} }{2(1)}$
x= $(3.5+/- √(12.25-6) )/(2)$
x= $(3.5+/- √(6.25) )/(2)$
x= $(3.5+/- 2.5)/(2)$
x= $(3.5+ 2.5)/(2)$ or x= $(3.5- 2.5)/(2)$
x=6/2 or 1/2
x=3 or 0.5
those are the numbers

3 and 0.5

The number are "x" and "y".
Then, we suggest this system of equations:
xy=1.5
x+y=3.5

we can solve this system of equations by substitution method.

y=3.5 - x

x(3.5-x)=1.5
3.5x-x²=1.5
x²-3.5x+1.5=0

We solve this square equation:

x=[3.5⁺₋√(12.25 - 6)] / 2=(3.5⁺₋2.5)/2

we have two solutions:
x₁=(3.5-2.5) / 2=0.5 then: y₁=3.5-x=3.5 - 0.5=3

x₂=(3.5+2.5)/2=3 then y₂=3.5-x=3.5-3=0.5

Therefore the two numbers are 3 and 0.5

Answer: the numbers are 3 and 0.5

Find slope of 2x-4y + 7=0

Answers

Answer:

1/2

Step-by-step explanation:

The first thing you want to do is get y by itself. Subtract 7 from both sides:

2x-4y=-7

and then subtract 2x ( the goal is to make your equation look like this: y=mx+b):

-4y= -2x-7

Now, y is mostly isolated, all you have to do now is divide both sides by -4 in order for y to be completely by itself:

y=-2/-4x -7/-4

Simplify completely:

y=1/2x+7/4

Now you have your equation you can easily read it as y=mx+b.

** m is slope & b is the y-intercept**

So your slope would be: 1/2

2) A product originally costs $125. If the product goes on sale for 20% off, and then goes on sale for an additional 30% off, what is the price of the product? A. $62.50 B. $70 C. $65 D. $90 3) If you pay $22.90 for a DVD that includes a 7% sales tax, what is the price of the DVD before the sales tax? A. $21.40 B. $21.30 C. $21.50 D. $20.95

Answers

To do these, always convert the percents to decimals, so you can subtract it from 1. Remember, 1 is the whole. When you subtract the part that's taken off, you are left with what you have to pay. If you have 20% off of $100, then you are paying for 80% of $100. **of means to multiply** so you would multiply: 0.8X100, which would be $80.

First, multiply 125x0.8

Multiply that answer by 0.7

You should get B. $70

3) multiple 22.90x0.93

You should get D

2) B. $70
First you multiply 125 by 20%, but put the percent to a decimal then subtract and of the same with the 30% just add on to it

3) first you multiply 22.90 and .07 and add

Una sucesion aumenta de 0.5 en 0.5 cuales son los primeros 6 terminos si el inicial es uno ???

Answers

1, 1.5, 2, 2.5, 3, 3.5

Y si no se cuenta el uno:

1.5, 2, 2.5, 3, 3.5, 4.

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The equation of line CD is y = 3x − 3. Write an equation of a line perpendicular to line CD in slope-intercept form that contains point (3, 1).