Select the construction that guarantees A' is a reflection of point A across line BC

Answer:

no

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]a_n=a_1+d(n-1)\\\\a_3=5+d(3-1)\\\\-1=5+2d\\\\-6=2d\\\\d=-\frac62=-3\\\\\\a_n=5+(-3)(n-1)\\\\a_n=5-3n+3\\\\a_n=-3n+8[/tex]

Check:    [tex]a_{10}=-3(10)+8=-30+8=-22[/tex]

Answer:

C

Step-by-step explanation:

Using the trig. identity

sin²x + cos²x = 1 ⇒ cosx = ± [tex]\sqrt{1-sin^2x}[/tex]

Here sinθ = [tex]\frac{1}{2}[/tex] , thus

cosθ = ± [tex]\sqrt{1-(\frac{1}{2})^2 }[/tex] = ± [tex]\sqrt{1-\frac{1}{4} }[/tex] = ± [tex]\sqrt{\frac{3}{4} }[/tex] = ± [tex]\frac{\sqrt{3} }{2}[/tex]

Since 0 ≤ θ > 90 then cosθ > 0 , thus

cosθ = [tex]\frac{\sqrt{3} }{2}[/tex] → C

Answer:

I can't understand it because of the way you put it.

Step-by-step explanation:

.

Answer:8 9

Step-by-step explanation:

1 is less that 5 therefore the 9 does not change its value

Answer:

8.9

Step-by-step explanation:1 is less then 5 so you round down

Answer:

1 2/7

Step-by-step explanation:

Quotient means division

-3/7 ÷-1/3

Copy dot flip

-3/7 * -3/1

9/7

7/7 + 2/7

1 2/7

Answer:

Step-by-step explanation:

Answer:

2/7

Step-by-step explanation:

1. 2x8/7x1/8

2. 2x1/7

3. 2/7

Answer:

if its 64/3.2= 20 its or if its 3.2/64 its= .1

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

divide the two factors and the answer is five

Answer:

22.5 degrees

Step-by-step explanation:

there are 8 corners in that polygon and there are 180 degrees inside every polygon

so divide 180 by 8

you should get 22.5 degrees

Answer: 1 3/8

Step-by-step explanation:

Step-by-step explanation:

I'm not sure but,here you go

2z = 10

z = 10 ÷ 2 = 5

x + 2y + z = 9

x + y + 3z = 13

____________

x + 2y + 5 = 9

x + y + 3(5) = 13

_____________

x + 2y = 9 - 5

x + y = 13 - 15

___________

x + 2y = 4

x + y = -2 (×-1)

___________

x + 2y = 4

-x - y = 2

___________

y = 6

x = -2y - z + 9 = -2(6) - 5 + 9 = -12 - 5 + 9 = -8

If you wanna check,

x + y +3z = 13

(-8) + 6 + 3(5) = 13

x = -8 , y = 6 , z = 5

I'm not very sure but here you go,I might be wrong^^

Answer:

1) 10

2) 9

Step-by-step explanation:

50+35=5(10+7) because 5*10=50 and 5*7= 35

9+39=3(3+13) because 3*3=9 and 3*13=39

Answer:

3 and 8

Step-by-step explanation:

Coefficients are just the numbers that accompany the variables. So if you have any number, let's take 4, and put it next to an x: 4x, 4 will be your coefficient.

Answer:

90% of the question answered correct

10% were incorrect

Step-by-step explanation:

9.49$

Answer:

r= 48

Step-by-step explanation

r/2 - 8 = 16

     +8     +8

r/2 = 24

multiply both sides by two so it cancels out and you get r by itself.

the 2 cancels out and 24 times 2 = 48

r= 48

Answer:

25^9

Step-by-step explanation:

(25^3)^3 = 25^(3 * 3) = 25^9

Coordinates

-18 + 19½ = 1½?

37½

Step-by-step explanation:

(18 × 2) + 1½ = 37½

Answer:

it would be 4.5b - 9 = 1.5(3b-6)

Step-by-step explanation:

just divide 4.5 by 1.5 9 then do the same thing to

(don't forget to thank the skeleton in your closet

Answer:

5x + 10 + 55 = 90

5x = 90 -55 - 10

5x = 90 - 65

5x = 25

5x ÷ 5 = 25 ÷ 5

x = 5

Answer:

x=5

Step-by-step explanation:

If you replace the x in (5x+10)º

(5x+10)º

[5(5)+10]º

[25+10]º

= 35º

Combine the sums for angles M and R

55º+35º

=90º

Brainliest pls?

Answer:

(X+4,y-2)

Step-by-step explanation:

Answer:

The hot dog are $2.63

Step-by-step explanation:

Hot Dogs = H

Drinks = D

2H + 2D = 4

Divide both sides by 2

H + D = 2

Subtract D from either side

H = 2 -D

3H + D = 4.50

Plug in 2 - D for H

3(2- D ) + D = 4.50

6 - 3D + D = 4.50

6 - 4D = 4.50

Add 6 to either side

-4D = 10.50

Divide either side by -4

D = -2 . 625

Answer:

This may be a function of the absolte value family.

f(x) = IxI.

f(x) = x if x ≥ 0

f(x) = -x  if x ≤ 0

Where this is the parent function, and the graph is shown below in green.

If the coefficient is positive, then the lines open upwards, and we will have a minimum (in this case, when x = 0).

And also in this case, we have symmetry around the value x = 0.

Now, the vertex can also be an absolute maximum if the coefficient is negative, like in the example shown below in color blue (the equation for the blue graph is f(x) = -3*IxI )

Answer:

2 7/8

Step-by-step explanation:

Answer:

2 7/8

Step-by-step explanation:

Answer:

A. -4

Step-by-step explanation:

For solving for x intercepts analytically. You can set the the y in the equation to 0. So, 2x-3(0)=12, and solving for x will get you -4.

You can also solve graphically by plugging in the equation and looking at where it intercepts the x axis.

Answer:

All real numbers are solutions

Step-by-step explanation:

Let's solve your equation step-by-step.

−2(2x+3)=−4(x+1)−2

Step 1: Simplify both sides of the equation.

−2(2x+3)=−4(x+1)−2

(−2)(2x)+(−2)(3)=(−4)(x)+(−4)(1)+−2(Distribute)

−4x+−6=−4x+−4+−2

−4x−6=(−4x)+(−4+−2)(Combine Like Terms)

−4x−6=−4x+−6

−4x−6=−4x−6

Step 2: Add 4x to both sides.

−4x−6+4x=−4x−6+4x

−6=−6

Step 3: Add 6 to both sides.

−6+6=−6+6

0=0

Answer:

All real numbers are solutions.