A reflection.. help with coordinates please.. 15 points

Can anyone confirmed and explained 18/19/20

Cerrena [4.2K]

Answer

18) $51

19) $24

20) Carla's account.

Explanation

18)

Positive sign values means deposit while the negative values means money been withdrawn from the account.

$100 - $18 + $22 - $53 = $51

19)

Positive sign values means money deposited while the negative values means money been withdrawn from the account.

$45 - $17 - $22 + $18 = $24

20)

To get the person with the most deduction, you should add the negative values in the table then compare.

Carla ⇒ -18 + -53 = $-71

Leta ⇒ -17+ -22 = $-39

From here we can see that the account with greatest decrease is Carla's account.

3 0

3 years ago

Currently 31 out of 50 American adults drink coffee every day . In a town with a population on 7,500 adults how many of these ad

larisa86 [58]

Answer:

4650 adults

Step-by-step explanation:

The ratio of people who drink coffee to total people is 31/50, or 0.62

To find the number of adults in the town who drink coffee, multiply the ratio by how many people there are in the town.

Plugging in the values we are given,

0.62 * 7500 = 4650

We can expect 4650 adults to drink coffee in the town.

8 0

3 years ago

2х5y-3z-=14 x-2y+=-12 -x+ Зу-2z =13

lukranit [14]

Answer:

x = -34/3, y = 1/3, and z = -35/3

Step-by-step explanation:

2х+5y-3z-=14 let's call this equation 1.

x-2y=-12 let's call this equation 2.

-x+Зу-2z =13 let's call this equation 3.

USING EQUATION 1 AND EQUATION 3.

2х+5y-3z-=14 (EQUATION 1)

-x+Зу-2z =13 (EQUATION 3)

LET'S GET RID OF z, BY MAKING THE COEFFICIENT OF z IN THE TWO EQUATION THE SAME. WE WILL MULTIPLY EQUATION 1 BY 2 AND EQUATION 3 BY 3.

2х+5y-3z-=14 (EQUATION 1) * 2

-x+Зу-2z =13 (EQUATION 3) * 3

4х+10y-6z-=28 let's call this equation 4.

-3x+9у-6z =39 let's call this equation 5.

TO GET RID OF z, WE WILL HAVE TO SUBTRACT EQUATION 5 FROM EQUATION 4 PLEASE TAKE NOTE OF THE SIGNS (-) (+).

4х+10y-6z-=28 (EQUATION 4)

- (-3x+9у-6z =39) (EQUATION 5)

(4x - 3x) + ((+10y) - (+9y)) + ((-6z) - (-6z)) = (28 - 39)

x + y + 0 = -11

x + y = -11 let's call this equation 6.

USING EQUATION 2 AND EQUATION 6, LET'S FIND x AND y.

x-2y=-12 (EQUATION 2)

x + y = -11 (EQUATION 6)

x has the same coefficient in both equations, which is 1. Let's get rid of x so we can find the value of y.

We will subtract equation 6 from equation 2. Take note of the signs.

x-2y=-12 (EQUATION 2)

- (x + y = -11) (EQUATION 6)

(x - x) + ((-2y) - (+y)) = ((-12) - (-11))

0 + -3y = -1

-3y = -1

Divide both sides by -3.

-3y/-3 = -1/-3

y = 1/3

LET'S SUBSTITUTE THE VALUE OF y INTO EQUATION 2 TO GET THE VALUE OF x.

x-2y=-12 (EQUATION 2)

x-2(1/3)=-12

x -2/3 = -12

Add 2/3 to both sides.

x -2/3 + (2/3) = -12 + (2/3)

x + 0 = -34/3

x = -34/3

LET'S SUBSTITUTE THE VALUES OF x and y INTO EQUATION 1 TO GET THE VALUE OF z.

2х+5y-3z-=14 (EQUATION 1)

2(-34/3)+5(1/3)-3z-=14

-68/3 + 5/3 - 3z = 14

-21 - 3z = 14

Add 21 to both sides.

-21 + (21) - 3z = 14 + (21)

0 - 3z = 35

-3z = 35

Divide both sides by -3.

-3z/-3 = 35/-3

z = -35/3 or

Therefore, x = -34/3, y = 1/3, and z = -35/3

Please thank, rate 5 stars, and give brainliest. Thank you.

6 0

3 years ago

Only if you know plz help

Vesnalui [34]

I think it is a and I hope it help you

4 0

3 years ago

Read 2 more answers

Please help Please Please Pleaseeeee

rewona [7]

Answer:

9

Step-by-step explanation:

Hello There!

The image shown is a trapezoid

The dimensions of the non shaded area are:

Base 1 = 2 units

Base 2 = 4 units

Height = 3 units

Now that we have found the dimensions we want to solve for the area by using the area formula for a trapezoid

$A=\frac{a+b}{2}h$ where a and b are bases and h is the height

knowing the dimensions all we have to do is plug in the values

so

$A=\frac{2+4}{2} 3\\2+4=6\\\frac{6}{2} =3\\3*3=9\\A=9$

so we can conclude that the area of the non shaded part is 9 square units

7 0

3 years ago