Properties of Angles. Help for Transition Math!?

Please help me with this I’m stuck and I’ll write a lot of points

d1i1m1o1n [39]

Answer:

b:100'

a:75

b:50

Step-by-step explanation:

5 0

3 years ago

Al sumar fracciones con igual denominador, debemos sumar numerador con numerador y denominador con denominador. Verdadero o fals

Ahat [919]

Answer:

La respuesta es falso.

Step-by-step explanation:

La respuesta es falso.

Cuando se suman fraccciones con igual denominador, se suman los numeradores (numerador con numerador) y se deja el mismo denominador (el cual es común en ambos). Por ejemplo, la suma de 1/5 + 3/5 da como resultado:

$\frac{1}{5} + \frac{3}{5} = \frac{1 + 3}{5} = \frac{4}{5}$

En el caso de fracciones con diferentes denominadores, tampoco se suma numerador con numerador y denominador con denominador. En ese caso se debe encontrar el mínimo común múltiplo.

Por lo tanto, la respuesta es falso.

Espero que te sea de utilidad!

7 0

2 years ago

Please helppp!!! Latrece sells bracelets for a fixed price at the craft show for every bracelet she sells she gives her business

anyanavicka [17]

Answer:

Step-by-step explanation:

Answer:

$7.50

Step-by-step explanation:

$207 / 18 = $11.50

Each bracelet costs $11.50.

$11.50 - $4 = $7.50

She receives $7.50 for every bracelet she sells.

8 0

3 years ago

Find x, y and ab and how to check if the answer is right

iris [78.8K]

Answer:

x = 2, y = -2, AB = 142

Step-by-step explanation:

The fact that X is the midpoint gives you two relations:

AX = XB

AX + XB = AB

Since you have two unknowns, this number of equations is sufficient to find their values. Substituting the given expressions in the above equations, you have ...

8(3x+5) -3(y-7) -22x = 5x +y +23 -4(x-12)
8(3x+5) -3(y-7) -22x + 5x +y +23 -4(x-12) = 2x -5y +128

Simplifying the first of these can make simplifying the second one easier.

24x +40 -3y +21 -22x = 5x +y +23 -4x +48

2x -3y +61 = x +y +71 . . . . . . we can use this simplification

x -4y = 10 . . . . . . . . . . . . . . . . subtract x+y+61

Now, we can simplify the second equation to ...

2x -3y +61 +x +y +71 = 2x -5y +128

3x -2y +132 = 2x -5y +128 . . . . . simplify the left side

x +3y = -4 . . . . . . . . . . . . . . . add -2x+5y-132

Then the two equations we need to solve are ...

x -4y = 10
x +3y = -4

Subtracting the second from the first, we get

-7y = 14

y = -2

Substituting into the first of these simplified equations, we get

x -4(-2) = 10 . . . . substitute for y

x +8 = 10 . . . . . . .evaluate

x = 2 . . . . . . . . . .subtract 8

So, the solution is (x, y) = (2, -2).

Now, the values of AX and XB are ...

AX = 2x -3y +61 = 2·2 -3(-2) +61 = 71

XB = x+y+71 = 2 +(-2) +71 = 71 . . . . . . . . matches AX, a good sign

AB = 2x -5y +128 = 2·2 -5(-2) +128 = 142 . . . . = AX+XB, another good sign

The desired values are x = 2, y = -2, AB = 142.

_____

You check the answer by filling the values into the expressions given in the problem statement and seeing if you get consistent results. Here, we used the simplified expressions, rather than the original expressions, so if we did the simplification wrong, we may have the wrong answer. It is always best to use the original equations. (A machine solver working with the original equations confirms our result, so "confidence is high.")

4 0

3 years ago

5k race surveyed runners about their finishing times (f) and the number of previous races they had run (n). The organizers found

vichka [17]

I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES.
SEE ATTACHED IMAGE, PLEASE.
The first thing we must do for this case is to define variables.
n = number of 5k races covered
f = end time.
We have the following equation:
f = -1.2n + 38.1
We note that the slope of the line is:
m = -1.2 minutes per race
Therefore, the time decreases 1.2 minutes when the number of races increases n.
Answer:
The model predicts that for each additional race to runner has run, the finishing time decreases by about 1.2 minutes

3 0

3 years ago